REVIEW 8 cited by
Inverse Lieb Materials: Altermagnetism and More
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Inverse Lieb Materials: Altermagnetism and More
read the original abstract
The Lieb lattice, originally proposed for cuprate superconductors, has gained new attention in the emerging field of altermagnetism as a minimal analytical model for the latter. While initially the so-called inverse Lieb lattice (ILL) was deemed only a theoretical model, recently several real materials with this crystallographic motif have been found. The unique geometry of ILL can accommodate complex magnetic orderings arising from competing exchange interactions and geometric frustration, offering great tunability for magnetic properties. In this work, we provide comprehensive insights into magnetic phases in ILL materials and establish guidelines for efficient identification of altermagnetic materials within this family. We begin by constructing phase diagrams using a simple Heisenberg model to elucidate the fundamental mechanisms underlying altermagnetism and other complex magnetic phases observed experimentally. To bridge theory with experiment, we systematically investigate a series of existing ILL compounds using density functional theory (DFT) calculations to determine their magnetic ground states. Our computational results are in good agreement with experimental observations. Importantly, we identify a trend linking magnetic ordering to the $d$-shell filling of transition metal ions, with $d^{2-3}$ and $d^{5}$ configurations showing propensity for altermagnetic behavior. Additionally, we identify a promising metallic compound Sr$_{2}$CrO$_{2}$Cr$_{2}$OAs$_{2}$ as an altermagnet that is highly anisotropic in its $J_2$ exchange couplings with large N\'eel temperature ($\sim 600$ K). Using exchange coupling parameters extracted from DFT calculations, we compute the magnon spectra for altermagnetic systems. As expected, chiral splittings in the magnon dispersion are directly correlated with anisotropy between crystallographically inequivalent $J_{2}$ exchange interactions.
Forward citations
Cited by 8 Pith papers
-
Nanoscale Imaging of Strain-Controlled Altermagnetic Domains in {\alpha}-MnTe
In alpha-MnTe, compression makes magnetic domains grow by merging, and unloading leaves them fragmented in a different, metastable pattern, so the material remembers the strain history.
-
$d$-wave altermagnetism revealed by resonant inelastic X-ray scattering
RIXS circular dichroism with d-wave symmetry in La2O3Mn2Se2 provides evidence for d-wave altermagnetism independent of magnon splitting.
-
Deterministic Electrical Switching in Altermagnets via Surface Antisymmetry Groups
Surface antisymmetry point groups classify which orientations of centrosymmetric d-wave altermagnets permit deterministic Néel-vector switching and transverse spin-splitter currents.
-
$d$-wave Surface Altermagnetism in Centrosymmetric Collinear Antiferromagnets
Surface altermagnetism with d-wave spin splitting occurs in centrosymmetric collinear antiferromagnets only when no sublattice-exchanging antiunitary symmetry survives at the surface, as shown by symmetry analysis and...
-
Topological piezomagnetic effect in two-dimensional Dirac quadrupole altermagnets
Dirac quadrupole altermagnets in 2D exhibit a topological orbital piezomagnetic effect from strain altering their quadrupole Dirac points.
-
Superconducting States and Intertwined Orders in Metallic Altermagnets
In C4T-symmetric d-wave altermagnets, equal-spin p-wave pairing condenses in two non-degenerate two-component gap sets, producing two transition temperatures, with nematic and spin-current-loop fluctuations respective...
-
Impact of strong electronic correlations on altermagnets: the case of NiS2
In the metallic altermagnet NiS2, dynamic correlations renormalize the altermagnetic spin splitting in a band- and energy-dependent way and give spin-up and spin-down quasiparticles markedly different lifetimes.
-
Slave-rotor theory of correlated altermagnets on the Lieb lattice
Slave-rotor theory on the Lieb-lattice altermagnetic Hubbard model finds interaction-driven transitions from normal metal to altermagnetic metal to altermagnetic insulator to Mott insulator, with spin splitting suppre...
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.