pith. sign in

arxiv: 2311.14476 · v1 · submitted 2023-11-24 · ❄️ cond-mat.quant-gas · cond-mat.mes-hall· physics.app-ph

Local temperature control of magnon frequency and direction of supercurrents in a magnon Bose-Einstein condensate

Matthias R. Schweizer , Franziska K\"uhn , Victor S. L'vov , Anna Pomyalov , Georg von Freymann , Burkard Hillebrands , Alexander A. Serga This is my paper

Pith reviewed 2026-05-24 06:32 UTC · model grok-4.3

classification ❄️ cond-mat.quant-gas cond-mat.mes-hallphysics.app-ph
keywords magnon Bose-Einstein condensatesupercurrentsdemagnetizing fieldtemperature controlmagnetic filmsmagnon dispersionBose-Einstein condensation
0
0 comments X

The pith

Local heating raises the minimum magnon frequency in films, driving supercurrents away from the hot region.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper shows that laser heating creates temperature variations that change both the saturation magnetization and the connected demagnetizing field in magnetic films. When heating produces a local minimum in saturation magnetization, the two effects together raise the lowest frequency in the magnon dispersion at the location where the Bose-Einstein condensate forms. This frequency increase produces a magnon supercurrent that flows outward from the heated area. The result matters for experiments that use local heating to study magnon condensation and supercurrents, because the demagnetizing field contribution reverses the expected current direction.

Core claim

In case of a heat induced local minimum of the saturation magnetization, the combination of these two effects results in a local increase in the minimum frequency value of the magnon dispersion at which the Bose-Einstein condensate emerges. As a result, a magnon supercurrent directed away from the hot region is formed.

What carries the argument

The combined local variations of saturation magnetization and demagnetizing field that raise the minimum of the magnon dispersion relation.

If this is right

  • A magnon supercurrent forms and flows away from the heated region.
  • The minimum frequency of the magnon dispersion increases locally where the heat creates a magnetization minimum.
  • Temperature gradients can be used to control the direction of magnon supercurrents in Bose-Einstein condensate studies.
  • Accurate modeling of magnon condensation under local heating requires including the demagnetizing field variation.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Localized heating could serve as a method to steer magnon currents in magnonic circuits without applied magnetic fields.
  • The same combined magnetization and demagnetizing field mechanism may appear in other spin-wave systems where temperature gradients are applied.
  • Varying the laser spot size or power in experiments could quantify how strongly the frequency shift depends on the demagnetizing field change.

Load-bearing premise

The demagnetizing field varies locally in direct connection with the heat-induced minimum of saturation magnetization in a manner that produces a net increase of the minimum magnon frequency.

What would settle it

An experiment that measures the direction of the magnon supercurrent relative to a localized heat spot and finds flow toward the hot region instead of away from it.

Figures

Figures reproduced from arXiv: 2311.14476 by Alexander A. Serga, Anna Pomyalov, Burkard Hillebrands, Franziska K\"uhn, Georg von Freymann, Matthias R. Schweizer, Victor S. L'vov.

Figure 1
Figure 1. Figure 1: FIG. 1. (a) A spheroidal magnetic inhomogeneity embedded [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: FIG. 2. The BEC wave function Ψ( [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: FIG. 3. (a) Schematic representation of the experimental [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: FIG. 4. Overview of the development of the magnon spectrum. (a) Just after the start of the parametric amplification. (b) [PITH_FULL_IMAGE:figures/full_fig_p005_4.png] view at source ↗
read the original abstract

The creation of temperature variations in magnetization, and hence in the frequencies of the magnon spectrum in laser-heated regions of magnetic films, is an important method for studying Bose-Einstein condensation of magnons, magnon supercurrents, Bogoliubov waves, and similar phenomena. In our study, we demonstrate analytically, numerically, and experimentally that, in addition to the magnetization variations, it is necessary to consider the connected variations of the demagnetizing field. In case of a heat induced local minimum of the saturation magnetization, the combination of these two effects results in a local increase in the minimum frequency value of the magnon dispersion at which the Bose-Einstein condensate emerges. As a result, a magnon supercurrent directed away from the hot region is formed.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

0 major / 3 minor

Summary. The manuscript claims that local laser heating in magnetic films induces a minimum in the saturation magnetization Ms, and that the associated local variation in the demagnetizing field must be included. Together these effects raise the minimum frequency of the magnon dispersion at which the BEC forms, producing a supercurrent directed away from the heated region. The result is supported by analytical derivations, numerical simulations, and experimental observations.

Significance. If the central claim holds, the work supplies a necessary refinement to models of temperature-controlled magnon BECs and supercurrents. It shows that demagnetizing-field variations are not negligible and can reverse the expected direction of the supercurrent relative to a pure-Ms picture. The combination of analytical, numerical, and experimental evidence is a positive feature; the absence of free parameters fitted to the result itself further strengthens the argument.

minor comments (3)
  1. [Abstract] The abstract states that the combined effects produce a local increase in the minimum magnon frequency, but does not quote the explicit expression for the frequency shift (e.g., the term arising from the demagnetizing-field gradient). Adding this relation would improve immediate readability.
  2. [Figures] Figure captions should explicitly state the laser power, film thickness, and external field values used in the experimental panels so that the reader can directly compare with the numerical parameters.
  3. [Theory section] The text refers to 'standard physical relations between magnetization, demagnetizing field, and magnon dispersion' but does not cite the specific textbook or review from which the dispersion formula is taken; a single reference would suffice.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for the positive assessment of our manuscript, the recognition of its analytical, numerical, and experimental contributions, and the recommendation to accept. No major comments were raised, so we have no points requiring response or revision.

Circularity Check

0 steps flagged

No significant circularity; derivation is self-contained

full rationale

The paper claims an analytic/numeric/experimental demonstration that local Ms reduction plus connected demagnetizing-field variation raises the minimum of the magnon dispersion, driving outward supercurrent. No quoted equations reduce a prediction to a fitted input by construction, no self-citation chain is load-bearing for the central result, and no ansatz is smuggled via prior work. The argument rests on standard micromagnetic relations between magnetization, demagnetizing field, and dispersion, which are externally falsifiable and independent of the target claim. This matches the default expectation of no circularity.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 0 invented entities

The central claim rests on the standard domain model of magnon dispersion in thin films and the geometric relation between local magnetization and the demagnetizing field; no new free parameters or invented entities are introduced in the abstract.

axioms (2)
  • domain assumption Magnon dispersion relation depends on local saturation magnetization and demagnetizing field
    Invoked when the paper states that the minimum frequency is determined by the combination of these two quantities.
  • domain assumption Local heating produces a minimum in saturation magnetization
    Stated as the starting condition for the heat-induced effect.

pith-pipeline@v0.9.0 · 5705 in / 1440 out tokens · 28876 ms · 2026-05-24T06:32:08.461265+00:00 · methodology

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Reference graph

Works this paper leans on

43 extracted references · 43 canonical work pages

  1. [1]

    Einstein ,\ title title Quantentheorie des einatomigen idealen Gases

    author author A. Einstein ,\ title title Quantentheorie des einatomigen idealen Gases. Zweite Abhandlung ( German ) [Quantum theory of the monatomic ideal gas. Second Treatise] , \ in\ https://doi.org/10.1002/3527608958 booktitle Albert Einstein: Akademie-Vortr\" a ge, Sitzungsberichte der Preu ischen Akademie der Wissenschaften 1914--1932 ,\ editor edite...

    work page doi:10.1002/3527608958 1914

  2. [2]

    Fr\" o hlich ,\ title title Bose condensation of strongly excited longitudinal electric modes , \ https://doi.org/10.1016/0375-9601(68)90242-9 journal journal Phys

    author author H. Fr\" o hlich ,\ title title Bose condensation of strongly excited longitudinal electric modes , \ https://doi.org/10.1016/0375-9601(68)90242-9 journal journal Phys. Lett. A \ volume 26 ,\ pages 402--403 ( year 1968 ) NoStop

    work page doi:10.1016/0375-9601(68)90242-9 1968

  3. [3]

    author author J. P. \ Eisenstein \ and\ author A. H. \ MacDonald ,\ title title Bose--Einstein condensation of excitons in bilayer electron systems , \ https://doi.org/10.1038/nature03081 journal journal Nature \ volume 432 ,\ pages 691--694 ( year 2004 ) NoStop

    work page doi:10.1038/nature03081 2004

  4. [4]

    author author Y. M. \ Bunkov \ and\ author G. E. \ Volovik ,\ title title Bose--Einstein condensation of magnons in superfluid 3He , \ https://doi.org/10.1007/s10909-007-9530-7 journal journal J. Low Temp. Phys. \ volume 150 ,\ pages 135--144 ( year 2007 ) NoStop

    work page doi:10.1007/s10909-007-9530-7 2007

  5. [5]

    author author S. O. \ Demokritov , author V. E. \ Demidov , author O. Dzyapko , author G. A. \ Melkov , author A. A. \ Serga , author B. Hillebrands ,\ and\ author A. N. \ Slavin ,\ title title Bose--Einstein condensation of quasi-equilibrium magnons at room temperature under pumping , \ https://doi.org/10.1038/nature05117 journal journal Nature \ volume ...

    work page doi:10.1038/nature05117 2006

  6. [6]

    Klaers , author J

    author author J. Klaers , author J. Schmitt , author F. Vewinger ,\ and\ author M. Weitz ,\ title title Bose--Einstein condensation of photons in an optical microcavity , \ https://doi.org/10.1038/nature09567 journal journal Nature \ volume 468 ,\ pages 545--548 ( year 2010 ) NoStop

    work page doi:10.1038/nature09567 2010

  7. [7]

    Amo , author J

    author author A. Amo , author J. Lefr\` e re , author S. Pigeon , author C. Adrados , author C. Ciuti , author I. Carusotto , author R. Houdr\' e , author E. Giacobino ,\ and\ author A. Bramati ,\ title title Superfluidity of polaritons in semiconductor microcavities , \ https://doi.org/10.1038/nphys1364 journal journal Nat. Phys. \ volume 5 ,\ pages 805-...

    work page doi:10.1038/nphys1364 2009

  8. [8]

    Snoke ,\ title title Coherent questions , \ https://doi.org//10.1038/443403a journal journal Nature \ volume 443 ,\ pages 402--403 ( year 1978 ) NoStop

    author author D. Snoke ,\ title title Coherent questions , \ https://doi.org//10.1038/443403a journal journal Nature \ volume 443 ,\ pages 402--403 ( year 1978 ) NoStop

    work page doi:10.1038/443403a 1978

  9. [9]

    Cherepanov , author I

    author author V. Cherepanov , author I. Kolokolov ,\ and\ author V. S. \ L'vov ,\ title title The saga of YIG: Spectra, thermodynamics, interaction and relaxation of magnons in a complex magnet , \ https://doi.org/10.1016/0370-1573(93)90107-O journal journal Phys. Rep. \ volume 229 ,\ pages 81--144 ( year 1993 ) NoStop

    work page doi:10.1016/0370-1573(93)90107-o 1993

  10. [10]

    author author A. Z. \ Arsad , author A. W. M. \ Zuhdi , author N. B. \ Ibrahim ,\ and\ author M. A. \ Hannan ,\ title title Recent advances in yttrium iron garnet films: Methodologies, characterization, properties, applications, and bibliometric analysis for future research directions , \ https://doi.org/10.3390/app13021218 journal journal Appl. Sci. \ vo...

    work page doi:10.3390/app13021218 2023

  11. [11]

    Dzyapko , author V

    author author O. Dzyapko , author V. E. \ Demidov , author S. O. \ Demokritov , author G. A. \ Melkov ,\ and\ author V. L. \ Safonov ,\ title title Monochromatic microwave radiation from the system of strongly excited magnons , \ https://doi.org/10.1063/1.2910653 journal journal Appl. Phys. Lett. \ volume 92 ,\ pages 162510 ( year 2008 ) NoStop

    work page doi:10.1063/1.2910653 2008

  12. [12]

    Nakata , author P

    author author K. Nakata , author P. Simon ,\ and\ author D. Loss ,\ title title Magnon transport through microwave pumping , \ https://doi.org/10.1103/physrevb.92.014422 journal journal Phys. Rev. B \ volume 92 ,\ pages 014422 ( year 2015 ) NoStop

    work page doi:10.1103/physrevb.92.014422 2015

  13. [13]

    Pirro , author V

    author author P. Pirro , author V. I. \ Vasyuchka , author A. A. \ Serga ,\ and\ author B. Hillebrands ,\ title title Advances in coherent magnonics , \ https://doi.org/10.1038/s41578-021-00332-w journal journal Nat. Rev. Mater. \ volume 6 ,\ pages 1114 ( year 2021 ) NoStop

    work page doi:10.1038/s41578-021-00332-w 2021

  14. [14]

    a cher , author B. L\

    author author M. Schneider , author D. Breitbach , author R. O. \ Serha , author Q. Wang , author M. Mohseni , author A. A. \ Serga , author A. N. \ Slavin , author V. S. \ Tiberkevich , author B. Heinz , author T. Br\" a cher , author B. L\" a gel , author C. Dubs , author S. Knauer , author O. V. \ Dobrovolskiy , author P. Pirro , author B. Hillebrands ...

    work page doi:10.1103/physrevb.104.l140405 2021

  15. [15]

    Mohseni , author V

    author author M. Mohseni , author V. I. \ Vasyuchka , author V. S. \ L'vov , author A. A. \ Serga ,\ and\ author B. Hillebrands ,\ title title Classical analog of qubit logic based on a magnon Bose--Einstein condensate , \ https://doi.org/10.1038/s42005-022-00970-8 journal journal Commun. Phys. \ volume 5 ,\ pages 196 ( year 2022 ) NoStop

    work page doi:10.1038/s42005-022-00970-8 2022

  16. [16]

    a cher , author B. L\

    author author D. Breitbach , author M. Schneider , author B. Heinz , author F. Kohl , author J. Maskill , author L. Scheuer , author R. Serha , author T. Br\" a cher , author B. L\" a gel , author C. Dubs , author V. Tiberkevich , author A. Slavin , author A. Serga , author B. Hillebrands , author A. Chumak ,\ and\ author P. Pirro ,\ title title Stimulate...

    work page doi:10.1103/physrevlett.131.156701 2023

  17. [17]

    author author D. A. \ Bozhko , author A. A. \ Serga , author P. Clausen , author V. I. \ Vasyuchka , author F. Heussner , author G. A. \ Melkov , author A. Pomyalov , author V. S. \ L'vov ,\ and\ author B. Hillebrands ,\ title title Supercurrent in a room temperature Bose--Einstein magnon condensate , \ https://doi.org/10.1038/nphys3838 journal journal Na...

    work page doi:10.1038/nphys3838 2016

  18. [18]

    author author D. A. \ Bozhko , author A. J. E. \ Kreil , author H. Y. \ Musiienko-Shmarova , author A. A. \ Serga , author A. Pomyalov , author V. S. \ L'vov ,\ and\ author B. Hillebrands ,\ title title Bogoliubov waves and distant transport of magnon condensate at room temperature , \ https://doi.org/10.1038/s41467-019-10118-y journal journal Nat. Commun...

    work page doi:10.1038/s41467-019-10118-y 2019

  19. [19]

    author author M. R. \ Schweizer , author A. J. E. \ Kreil , author G. von Freymann , author B. Hillebrands ,\ and\ author A. A. \ Serga ,\ title title Confinement of Bose--Einstein magnon condensates in adjustable complex magnetization landscapes , \ https://doi.org/10.1063/5.0123233 journal journal J. Appl. Phys. \ volume 132 ,\ pages 183908 ( year 2022 ) NoStop

    work page doi:10.1063/5.0123233 2022

  20. [20]

    author author A. J. E. \ Kreil , author H. Y. \ Musiienko-Shmarova , author P. Frey , author A. Pomyalov , author V. S. \ L'vov , author G. A. \ Melkov , author A. A. \ Serga ,\ and\ author B. Hillebrands ,\ title title Experimental observation of Josephson oscillations in a room-temperature Bose--Einstein magnon condensate , \ https://doi.org/10.1103/Phy...

    work page doi:10.1103/physrevb.104.144414 2021

  21. [21]

    Dzyapko , author I

    author author O. Dzyapko , author I. Lisenkov , author P. Nowik-Boltyk , author V. E. \ Demidov , author S. O. \ Demokritov , author B. Koene , author A. Kirilyuk , author T. Rasing , author V. Tiberkevich ,\ and\ author A. Slavin ,\ title title Magnon-magnon interactions in a room-temperature magnonic Bose--Einstein condensate , \ https://doi.org/10.1103...

    work page doi:10.1103/physrevb.96.064438 2017

  22. [22]

    author author I. V. \ Borisenko , author B. Divinskiy , author V. E. \ Demidov , author G. Li , author T. Nattermann , author V. L. \ Pokrovsky ,\ and\ author S. O. \ Demokritov ,\ title title Direct evidence of spatial stability of Bose--Einstein condensate of magnons , \ https://doi.org/10.1038/s41467-020-15468-6 journal journal Nat. Commun. \ volume 11...

    work page doi:10.1038/s41467-020-15468-6 2020

  23. [23]

    In the case of a very elongated spheroid, N_z tends to zero, and thus N_x=N_y 1/2

    @noop note Note that in the case of a sphere, N_x=N_y=N_z=1/3 , whereas in an ellipsoid of revolution (spheroid) along z , N_x=N_y . In the case of a very elongated spheroid, N_z tends to zero, and thus N_x=N_y 1/2 . Similarly, for a very flattened spheroid, N_z 1 , and N_x=N_y= 0 NoStop

    work page

  24. [24]

    author author A. G. \ Gurevich \ and\ author G. Melkov ,\ https://doi.org/10.1201/9780138748487 title Magnetization Oscillations and Waves \ ( publisher CRC Press, Boca Raton ,\ year 1996 ) NoStop

    work page doi:10.1201/9780138748487 1996

  25. [25]

    4 107133 URL https://doi.org/10.1063/1.4899186

    author author A. Vansteenkiste , author J. Leliaert , author M. Dvornik , author M. Helsen , author F. Garcia-Sanchez ,\ and\ author B. Van Waeyenberge ,\ title title The design and verification of MuMax3 , \ https://doi.org/10.1063/1.4899186 journal journal AIP Adv. \ volume 4 ,\ pages 107133 ( year 2014 ) NoStop

    work page doi:10.1063/1.4899186 2014

  26. [26]

    @noop note For these simulations, we estimate a maximum temperature-difference of approximately 100 , resulting in 4 M 400 \,G ( M SI units = \, 30 ) in contrast to 4 M 1750 \,G ( M SI units = \, 140 ) in the ambient plate. Hansen1974, Vogel2015, Bozhko2016 Although the decrease of M may seem excessive, it will be shown in the following that it leads to a...

    work page

  27. [27]

    author author J. A. \ Osborn ,\ title title Demagnetizing factors of the general ellipsoid , \ https://doi.org/10.1103/physrev.67.351 journal journal Phys. Rev. \ volume 67 ,\ pages 351--357 ( year 1945 ) NoStop

    work page doi:10.1103/physrev.67.351 1945

  28. [28]

    author author M. R. \ Schweizer , author F. K\" u hn , author M. Koster , author G. von Freymann , author B. Hillebrands ,\ and\ author A. A. \ Serga ,\ title title Rapid-prototyping of microscopic thermal landscapes in Brillouin light scattering spectroscopy , \ https://doi.org/10.1063/5.0160280 journal journal Rev. Sci. Instrum. \ volume 94 ,\ pages 093...

    work page doi:10.1063/5.0160280 2023

  29. [29]

    Vogel , author A

    author author M. Vogel , author A. V. \ Chumak , author E. H. \ Waller , author T. Langner , author V. I. \ Vasyuchka , author B. Hillebrands ,\ and\ author G. von Freymann ,\ title title Optically reconfigurable magnetic materials , \ https://doi.org/10.1038/nphys3325 journal journal Nat. Phys. \ volume 11 ,\ pages 487--491 ( year 2015 ) NoStop

    work page doi:10.1038/nphys3325 2015

  30. [30]

    Vogel , author R

    author author M. Vogel , author R. A mann , author P. Pirro , author A. V. \ Chumak , author B. Hillebrands ,\ and\ author G. von Freymann ,\ title title Control of spin-wave propagation using magnetisation gradients , \ https://doi.org/10.1038/s41598-018-29191-2 journal journal Sci. Rep. \ volume 8 ( year 2018 ),\ 10.1038/s41598-018-29191-2 NoStop

    work page doi:10.1038/s41598-018-29191-2 2018

  31. [31]

    author author J. Sandercock ,\ title title Some Recent Applications of Brillouin Scattering in Solid State Physics , \ in\ https://doi.org/10.1007/BFb0107378 booktitle Festk \" o rperprobleme 15 \ ( publisher Springer Berlin Heidelberg ,\ year 1975 )\ pp.\ pages 183--202 NoStop

    work page doi:10.1007/bfb0107378 1975

  32. [32]

    B\" u ttner , author M

    author author O. B\" u ttner , author M. Bauer , author A. Rueff , author S. Demokritov , author B. Hillebrands , author A. Slavin , author M. Kostylev ,\ and\ author B. Kalinikos ,\ title title Space- and time-resolved Brillouin light scattering from nonlinear spin-wave packets , \ https://doi.org/10.1016/s0041-624x(99)00208-5 journal journal Ultrasonics...

    work page doi:10.1016/s0041-624x(99)00208-5 2000

  33. [33]

    Sebastian , author K

    author author T. Sebastian , author K. Schultheiss , author B. Obry , author B. Hillebrands ,\ and\ author H. Schultheiss ,\ title title Micro-focused Brillouin light scattering: imaging spin waves at the nanoscale , \ https://doi.org/10.3389/fphy.2015.00035 journal journal Front. Phys. \ volume 3 ,\ pages 35 ( year 2015 ) NoStop

    work page doi:10.3389/fphy.2015.00035 2015

  34. [34]

    author author M. R. \ Schweizer ,\ title title PyThat: 0.2.9 , \ https://doi.org/10.5281/zenodo.10033001 journal journal Zenodo \ ( year 2023 ),\ 10.5281/zenodo.10033001 NoStop

    work page doi:10.5281/zenodo.10033001 2023

  35. [35]

    2017, Journal of Open Research Software, 5, doi: 10.5334/jors.148

    author author S. Hoyer \ and\ author J. Hamman ,\ title title xarray: N-D labeled arrays and datasets in Python , \ https://doi.org/10.5334/jors.148 journal journal J. Open Res. Softw. \ volume 5 ,\ pages 10 ( year 2017 ) NoStop

    work page doi:10.5334/jors.148 2017

  36. [36]

    author author G. A. \ Melkov , author A. A. \ Serga , author V. S. \ Tiberkevich , author A. N. \ Oliynyk ,\ and\ author A. N. \ Slavin ,\ title title Wave front reversal of a dipolar spin wave pulse in a nonstationary three-wave parametric interaction , \ https://doi.org/10.1103/physrevlett.84.3438 journal journal Phys. Rev. Lett. \ volume 84 ,\ pages 34...

    work page doi:10.1103/physrevlett.84.3438 2000

  37. [37]

    author author A. A. \ Serga , author C. W. \ Sandweg , author V. I. \ Vasyuchka , author M. B. \ Jungfleisch , author B. Hillebrands , author A. Kreisel , author P. Kopietz ,\ and\ author M. P. \ Kostylev ,\ title title Brillouin light scattering spectroscopy of parametrically excited dipole-exchange magnons , \ https://doi.org/10.1103/PhysRevB.86.134403 ...

    work page doi:10.1103/physrevb.86.134403 2012

  38. [38]

    author author V. S. \ L'vov , author A. Pomyalov , author D. A. \ Bozhko , author B. Hillebrands ,\ and\ author A. A. \ Serga ,\ title title Correlation-enhanced interaction of a Bose--Einstein condensate with parametric magnon pairs and virtual magnons , \ https://doi.org/10.1103/physrevlett.131.156705 journal journal Phys. Rev. Lett. \ volume 131 ( year...

    work page doi:10.1103/physrevlett.131.156705 2023

  39. [39]

    @noop note In our experiments, the pump pulse duration was 500 , and the maximal pump power was up to 5 . The parametric instability threshold was reached at a pump power P p = P p thr 1.3 , magnon accumulation at _\| began when P p was increased by 20\,dB, and the results presented in f:freq_intens were obtained at a pump power exceeding P p thr by 36\,d...

    work page

  40. [40]

    author author V. S. \ L'vov , author A. Pomyalov , author S. V. \ Nazarenko , author D. A. \ Bozhko , author A. J. E. \ Kreil , author B. Hillebrands ,\ and\ author A. A. \ Serga ,\ title title Bose--Einstein condensation in systems with flux equilibrium , \ @noop journal journal arXiv: \ ( year 2024 ) NoStop

    work page 2024

  41. [41]

    author author A. J. E. \ Kreil , author H. Y. \ Musiienko-Shmarova , author S. Eggert , author A. A. \ Serga , author B. Hillebrands , author D. A. \ Bozhko , author A. Pomyalov ,\ and\ author V. S. \ L'vov ,\ title title Tunable space-time crystal in room-temperature magnetodielectrics , \ https://doi.org/10.1103/PhysRevB.100.020406 journal journal Phys....

    work page doi:10.1103/physrevb.100.020406 2019

  42. [42]

    author author T. B. \ Noack , author V. I. \ Vasyuchka , author A. Pomyalov , author V. S. \ L'vov , author A. A. \ Serga ,\ and\ author B. Hillebrands ,\ title title Evolution of room-temperature magnon gas: Toward a coherent Bose--Einstein condensate , \ https://doi.org/10.1103/PhysRevB.104.L100410 journal journal Phys. Rev. B \ volume 104 ,\ pages L100...

    work page doi:10.1103/physrevb.104.l100410 2021

  43. [43]

    Hansen , author P

    author author P. Hansen , author P. R\" o schmann ,\ and\ author W. Tolksdorf ,\ title title Saturation magnetization of gallium-substituted yttrium iron garnet , \ https://doi.org/10.1063/1.1663657 journal journal J. Appl. Phys. \ volume 45 ,\ pages 2728--2732 ( year 1974 ) NoStop

    work page doi:10.1063/1.1663657 1974