23 citations · 27 across the 15 of their papers we have counts for
15 papers
Metastable magnetic domains and the anomalous resistance peak in twisted double bilayer graphene
Zhenxiang Gao, Christopher Coleman, Silvia Lüscher +7
In graphene moirés, valley polarization gives rise to orbital magnetism, manifested as an anomalous Hall effect and resulting in Barkhausen jumps in longitudinal resistance when ch…
Signatures of a ferro-Josephson effect in twisted graphene
Ruiheng Su, Zhenxiang Gao, Christopher Coleman +9
When a spin-polarized current is driven across a magnetic domain wall, the resulting spin-transfer torque may, beyond a critical threshold, set the wall's moments into precession.…
Singular Weak-Field Thermodynamics of 2D Superconductors
Guopeng Xu, Chunli Huang
In a bulk 3D type-II superconductor, the lower critical field at which an isolated vortex becomes thermodynamically favorable is a size-independent material property. We show that…
Multicomponent Magnetic Domain Walls in Rhombohedral Graphene
Mainak Das, Nemin Wei, Chunli Huang
Spatial textures of magnetic order, such as domain walls and skyrmions, are fundamental objects in magnetism. In rhombohedral multilayer graphene, magnetic order involves spin and…
Retarded interaction between opposite chiral edges in anomalous Hall crystals
Wangqian Miao, Mu-Yang Chen, Binghai Yan +1
An anomalous Hall crystal combines spontaneous electronic crystallization with a Chern insulating gap, supporting both chiral edge modes and low-energy electronic phonons. We show…
Multi-Knob Switchable Chiral Superconductivity Quartet in Rhombohedral Graphene
Zhenqi Hua, Shenyong Ye, Phatthanon Pattanakanvijit +17
Chiral superconductors break orbital time-reversal symmetry and may host topological quasiparticles with non-Abelian statistics. In rhombohedral graphene, superconductivity develop…
Orbital Magnetization from Uniform and Periodic Magnetic Fields
Chunli Huang
Magnetization is thermodynamically defined as the derivative of the grand potential with respect to a uniform magnetic field. However, a uniform magnetic field makes the kinetic mo…
Two-Body Solution and Instabilities along Streda Lines in Moire Flat Bands
Guopeng Xu, Chunli Huang
Moire minibands in twisted homobilayer semiconductors can, under suitable approximations, be modeled as a pair of Landau levels with opposite Chern numbers. This provides a minimal…
Localized Excitons and Landau-Level Mixing in Time-Reversal Symmetric Pairs of Chern Bands
Guopeng Xu, Nemin Wei, Inti Sodemann Villadiego +1
We study Landau-level mixing in a time-reversal-symmetric Hamiltonian composed of two sets of Landau levels with opposite magnetic field, relevant to moiré minibands in twisted hom…
Elementary Excitations, Melting Temperature, and Correlation Energy in Wigner Crystals
Ambuj Jain, Chunli Huang
We present a fully quantum-mechanical study of the energy--momentum dispersion of running waves, spin-conserving neutral excitations, and spin-reversal neutral excitations in a spi…
Influence of the Dirac Sea on Phase Transitions in Monolayer Graphene under Strong Magnetic Fields
Guopeng Xu, Chunli Huang
Recent scanning tunneling microscopy experiments have found Kekulé-Distorted (KD) ordering in graphene subjected to strong magnetic fields, a departure from the antiferromagnetic (…
Magnetism in the Dilute Electron Gas of Rhombohedral Multilayer Graphene
Tobias Wolf, Nemin Wei, Haoxin Zhou +1
Lightly-doped rhombohedral multilayer graphene has recently emerged as one of the most promising material platforms for exploring electronic phases driven by strong Coulomb interac…
Landau-Level Mixing and SU(4) Symmetry Breaking in Graphene
Nemin Wei, Guopeng Xu, Inti Sodemann Villadiego +1
Recent scanning tunneling microscopy experiments on graphene at charge neutrality under strong magnetic fields have uncovered a ground state characterized by Kekulé distortion (KD)…
Gate-tunable topological phases in superlattice modulated bilayer graphene
Yongxin Zeng, Tobias M. R. Wolf, Chunli Huang +4
Superlattice potential modulation can produce flat minibands in Bernal-stacked bilayer graphene. In this work we study how band topology and interaction-induced symmetry-broken pha…
Quasi-boson approximation yields accurate correlation energy in the 2D electron gas
Tobias M. R. Wolf, Chunli Huang
We report the successful adaptation of the quasi-boson approximation, a technique traditionally employed in nuclear physics, to the analysis of the two-dimensional electron gas. We…