Mesoscale and Nanoscale Physics
Semiconducting nanostructures: quantum dots, wires, and wells. Single electronics, spintronics, 2d electron gases, quantum Hall effect, nanotubes, graphene, plasmonic nanostructures
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Normally 0-degree stacking should add constructively, yet distinct layer resonances produce a π phase difference that cancels the signal.
· “Destructive interference of second harmonic generation in AA stacked MoTe₂/WSe₂”
Ellipsoidal magnetic crystals and cavity-coupled qubits produce phase-space grid states for bosonic error correction.
Single-layer Cr2S3 shows size-dependent hysteresis from a tiny net moment, remaining air-stable for days.
The same bubble-like charge pattern behind re-entrant quantum Hall states also hosts superconductivity.
Handedness of circular polarization sets the sign; the predicted shift is ~0.3 OAM quanta at iron's L3 edge.
· “Optical spin-orbit interaction induced by magnetic textures”
A superconducting qubit's nonlinearity lets single magnons be created, detected, and squeezed.
· “Quantum Magnonics: Quantum States Generation and Applications”
Three-fold quantum-yield gain and quench/enhance regimes support lower-power sub-diffraction bioimaging
· “NaBiF₄: Er³⁺, Yb³⁺ upconversion particle as a multi-functional bio-marker”
Interference signal difference between single and double processes reveals the pi-rotation exchange and topological spins.
· “Non-Abelian Anyon Braiding with Quantum-Antidot Interferometry”
Optical measurements in 12-nm films detect the altermagnetic spin-splitter effect for [010] current but not for [-101] current.
· “Magneto-Optical Detection of Anisotropic Spin Currents in Altermagnetic RuO2”
External fields control the order, with thickness series tracing the effect to the film interface and its link to anomalous Hall signals.
· “Imaging Surface Magnetization in Altermagnetic MnTe Films”
ML potential enables 8000-atom simulations showing phase separation from amorphous matrix with network preserved and experimental match.
Alternating scintillator and stopping layers raise both X-ray absorption and emission rate for better detectors
· “Hybrid Nanophotonic Scintillators for Enhanced X-ray Absorption, Emission, and Time Resolution”
In-situ experiments map continuous reversible twin reorganisation and surface flattening, offering a practical handle for domain engineering
· “Uniaxial strain-driven ferroelastic domain control in LaAlO3”
90% yield, 200 μm mean free path, and uniform magnetism open correlated nanoelectronics
· “Cryogenic shock exfoliation for ultrahigh mobility rhombohedral graphite nanoelectronics”
Polarization data and calculations assign the low-energy multiplet to symmetry and distortions, ruling out Rashba as the main cause.
· “Intra- and Interlayer Excitonic Fine Structure of the Two-Dimensional Perovskite (PEA)₂PbI₄”
Resonant drive of a localized oscillatory mode lets the wall escape pinning without strong external magnets.
· “Coherent Microwave Driving of Domain Wall Depinning in a Ferrimagnetic Garnet”
Frequency alone retunes the polariton canalization contour in pristine alpha-V2O5
· “Tunable Polariton Canalization in Natural van der Waals Oxide”
The shift encodes the full Landau level ladder directly, unlike phase-only effects in Shubnikov-de Haas oscillations.
· “Probing topology in thin films with quantum Sondheimer oscillations”
X HTBAR on LiNbO3 film delivers stable 5.75 MHz spacing, quality factors to 10^5, and tunable volumes for quantum uses.
· “Impedance-matched High-Overtone Thickness-Shear Bulk Acoustic Resonators with Scalable Mode Volume”
The gap cuts leakage but raises contact resistance and parasitic capacitance, leaving most contacts short of requirements.
· “Device-scaling constraints imposed by the van der Waals gap formed in two-dimensional materials”
One tensor merges the metric with SU(2) curvature and bounds 4D volume by the second Chern number.
· “Quaternion-Kahler geometry of time reversal symmetric crystals”
New rule predicts how laser polarization and phase switch odd-, even-, and mixed-parity spin splitting in one material.
Twisted MoTe2 holds spin textures for tens of microseconds, exposing a quantum-geometry route to long-lived order.
· “Observation of metastable chiral domain walls in a topological magnet”
The ladder's critical length switches from log to algebraic to aspect-ratio scaling as couplings become nonlocal.
· “Nonlocality-induced critical-length hierarchy from non-Hermitian competition”
Rolling 2D collinear magnets yields odd-parity spin symmetry and large nonrelativistic Edelstein response independent of the original order
· “Rolling Two-Dimensional Collinear Magnets into Chiral Nanotubes with p-Wave Magnetism”
A weak electric-field gradient produces real-space oscillations via the quantum metric even when curvature vanishes.
· “Quantum-metric Bloch oscillations in weakly inhomogeneous electric fields”
Qumus completes the first autonomous AI fabrication of vdW-stacked nanodevices with error correction in a closed physical loop.
· “Qumus: Realization of An Embodied AI Quantum Material Experimentalist”
Resistance plateau matches single-particle case at half filling of second moire band, with helical channels confirmed by nonlocal signals.
· “Observation of a Mott quantum spin Hall insulator in twisted WSe2”
Single-tile aperiodic structures in microcavities produce six-fold Bragg peaks and synchronization unlike periodic or Penrose cases.
E-beam AlOx is removed by standard developer, so contact regions open without a separate etching step.
· “Scalable, Simple, and Versatile Encapsulation of 2D Materials and Devices”
Closed-form bands and quantum geometry place the lowest band within 8.3 percent of an ideal Chern band.
Room-temperature single-photon sources can now sit inside cavities and diodes with sub-60 nm accuracy.
· “Depth Control of Room-Temperature Quantum Emitters in Gallium Nitride”
Encoding in the ground and second-excited states suppresses loss errors, at a factor-two echo-coherence cost.
A single resonant impurity can act as a coupler between protected valley modes in bilayer graphene.
A bilayer germanium qubit trades light-hole speed for heavy-hole coherence by moving one charge between two wells.
At 139 GHz it reaches 11.5 V/W with a 1.94 GHz cutoff; speed is limited by bond wires, not graphene.
· “Room-temperature graphene sub-terahertz detector integrated on a silicon dielectric waveguide”
A six-atom zero-flux model with complex hopping has a complex phase diagram and analytic boundaries.
· “Topological phases of a generalised tripartite Haldane model”
A Ge-matched, defect-free stack could replace buffered germanium qubits with faster, more isotropic spin control.
· “Light-Hole Spin Qubits in Strained SiGe Lattice-Matched to Ge”
The sixfold Moore-Read count stays fixed through γ=0.55–0.74, then collapses past a geometry threshold.
· “Fate of the non-Abelian Moore-Read manifold under the non-Hermitian skin effect”
A mismatch in band Chern numbers forces every neutral orbital variation to cost positive energy, a soft spectral gap.
Simulations show vortex beams write bimerons and antibimerons whose charge equals the beam's orbital angular momentum.
· “Quantum encoding of structured light into in-plane topological spin textures”
WSe2–NiPS3 keeps spectrally protected spin photocurrent bands across its magnetic phase transition, making light color a spin switch.
Replacing a density gradient with Boltzmann's law makes tunneling-diode simulations match full quantum current-voltage curves.
· “A Simple Regularization of the Smooth Quantum Hydrodynamic Model”
Two-band exact diagonalization matches the measured FCI sequence and the ν=-1/3 CDW ground state
In a Kitaev spin liquid, the oscillation measures the −1 braiding phase of Majorana fermions circling the flux.
· “Flux-induced Aharonov-Bohm Oscillation in the Tunneling Spectroscopy of Kitaev Spin Liquids”
Even with extra bands, a single quaternionic band on T^4 always develops a quantum-metric degeneracy.
· “Quaternionic Hermitian Band Geometry in Four Dimensions: Realization on S⁴ and Obstruction on T⁴”
A single excitonically dressed matrix element governs both scattering channels and reshapes graphene linewidths
· “The principle of detailed balance between electrons and phonons in presence of excitonic effects”
A complex-momentum zero sets the range of long-distance squeezing and gives a measurable length scale.
· “Quantum-Geometric Length Scale for Long-distance Squeezing in Bosonic Bogoliubov Systems”
Scanning-probe tracking finds lateral wall motion below 10 nm, so polarization reversal is nucleation-controlled.
· “Absence of lateral domain wall mobility in Zn1-xMgxO thin films”
Integrated optical conductivity becomes a direct readout of Bloch-state geometry, verified to within 0.2 percent.
Rabi frequency peaks near the hotspot but is asymmetric; the extracted spin-valley coupling is ten times larger than earlier Si/SiGe values.
Time labels evolution; position labels measurement outcomes. A teaching map shows why the wavefunction needs no time bra.
· “What do position and time mean in the quantum wavefunction?”
The same field collapses the gap and cuts conduction deep in the valence band, revealing band reconstruction.
· “Displacement-field-driven reconstruction of low energy transport in few-layer PtSe2”
Topotactic exchange yields two unreported compounds with ~0.8–0.9 eV predicted band gaps
· “Discovery of New Zintl Films and Nanowires Grown by Topotaxy Conversion of III-V Semiconductors”
Odd viscous fluids and their oscillator analogues are shown to be PT-symmetric, and the resulting exceptional point and Rabi sidebands give…
· “mathscr{PT}-symmetric hydrodynamics of odd viscous liquids and their oscillator counterparts”
Both topological transitions in the extended chain diverge with the same power-law exponent as the standard SSH model.
· “Fidelity susceptibility of Su-Schrieffer-Heeger model with further neighbour hopping term”
Patterned HgTe quantum wells should switch from quantum spin Hall to ordinary insulator at lithographic length scales.
· “Antidot superlattices in two-dimensional topological insulators”
A periodic array of submagnonic and supermagnonic regions in an antiferromagnet behaves as a non-reciprocal magnonic crystal whose bulk gap…
In Pt-Ni and Pt-Pd nanoparticles, the characteristic temperature T* of the quantum size effect scales with the Kubo gap, showing that…
· “Role of d-electron density of states in the quantum size effect of Pt-Ni and Pt-Pd nanoparticles”
Odd-length triangulene Haldane chains on a proximitized Au(111)/Nb(110) substrate host Yu-Shiba-Rusinov bound states, while even-length…
· “Parity-dependent coupling of molecular spin chains to a superconductor”
Angle-resolved and helicity-resolved Raman spectroscopy, together with DFT calculations, reveals anisotropic phonons and a…
· “Chiral Phonons and Giant Anisotropic Photoresponse in Quasi-1D van der Waals Semiconductor ZrSnS3”
For n=2 and n=3, the predicted charge–conductance pairs separate δ, β, and γ—even where shot noise alone fails.
· “Signatures of localization on the edge of a fractional topological insulator”
The equality needs the orbital matrix elements to stay fixed while the parameter changes.
· “Estimating the Fisher information from ARPES in general two-band models”
Simulations and measurements show channel width, thickness, and extension length set the speed-vs-mobility trade-off
Coordinate transformations yield position-dependent mass and potential that steer matter waves around a hidden region.
Zero-energy edge modes plus particle-hole symmetry forbid odd orders; moving the beam away restores them.
· “Even-harmonic generation from topological edge states in generalized Su-Schrieffer-Heeger models”
A sphere-constrained neural propagator replaces fine-step LLG integration and beats an adapted LSTM in-domain.
· “Physics-Constrained Neural Flow Maps for Long-Horizon Prediction of Spin Dynamics”
Boltzmann study shows the second angular harmonic and inter-contour scattering carry the spin response.
· “Extrinsic nonlinear spin currents in spin-orbit coupled systems: A Boltzmann transport study”
The crystal lattice supplies the missing angular momentum, and stronger focusing flips which beam dominates.
Encoding the qubit in a p-orbital shell makes its splitting insensitive to dot-size and shape errors, with 100–200 ns dephasing.
· “Noise-Robust Spin-Orbit Qubit in Germanium Holes via p-Orbital Encoding”
Interferometric spot placement drops noise below thermal vibration, so frequency maps survive with no drive.
· “High Speed Contact-Resonance Tracking using Brownian motion”
A geometric symmetry makes topological singularities in quantum-dot Josephson junctions gate-tunable and detectable.
· “Symmetry-Induced Weyl Nodes in Interacting Multi-Terminal Josephson Junctions”
A crossed heterojunction turns small voltages into a continuum of stable polarization states for synapses.
· “Continuously control of polarization via electrically driven long-distance superlubric sliding”
A quantum-dot sensor lets a thermoelectric converter adapt to unknown hot-side temperatures without external control.
EFISH at a LaAlO3/SrTiO3 junction is confined to a ~20 nm gap and modulated by 380%.
· “Electric-Field-Induced Second Harmonic Generation at a Reconfigurable LaAlO₃/SrTiO₃ Nanojunction”
Heated electrons enter the nonparabolic GaAs band, lowering the plasma frequency and forcing a nonlinear Hopfield model.
· “Nonlinear Diamagnetic Interactions in Ultrastrongly Coupled 2D Electrons”
The same inverted-band structure adds a second low-frequency branch when electron-hole symmetry breaks.
· “Interband plasmons due to Mexican hat dispersion in two-dimensional materials with inverted bands”
The magnetic order, not spin-orbit coupling, sets the Rashba energy; weak SOC can still drive large spin currents.
· “Interplay of nonrelativistic and relativistic spin splittings in altermagnets”
In-plane spin-torque diodes turn pulse amplitude and duty cycle into a single measurable dc voltage.
· “Spin-torque microwave detectors of positive rectangular pulse signals”
Two current plateaus match Pt13's predicted electron affinity and ionization potential.