192 citations · 677 across the 12 of their papers we have counts for
12 papers
Many-body mobility edges in 1D and 2D revealed by convolutional neural networks
Anffany Chen
We adapt a machine-learning approach to study the many-body localization transition in interacting fermionic systems on disordered 1D and 2D lattices. We perform supervised trainin…
Hyperbolic non-Abelian semimetal
Tarun Tummuru, Anffany Chen, Patrick M. Lenggenhager +3
We extend the notion of topologically protected semi-metallic band crossings to hyperbolic lattices in a negatively curved plane. Because of their distinct translation group struct…
Symmetry and topology of hyperbolic Haldane models
Anffany Chen, Yifei Guan, Patrick M. Lenggenhager +3
Particles hopping on a two-dimensional hyperbolic lattice feature unconventional energy spectra and wave functions that provide a largely uncharted platform for topological phases…
Hyperbolic Matter in Electrical Circuits with Tunable Complex Phases
Anffany Chen, Hauke Brand, Tobias Helbig +11
Curved spaces play a fundamental role in many areas of modern physics, from cosmological length scales to subatomic structures related to quantum information and quantum gravity. I…
Designing three-dimensional flat bands in nodal-line semimetals
Alexander Lau, Timo Hyart, Carmine Autieri +2
Electrons with large kinetic energy have a superconducting instability for infinitesimal attractive interactions. Quenching the kinetic energy and creating a flat band renders an i…
Quantum holography in a graphene flake with an irregular boundary
Anffany Chen, R. Ilan, F. de Juan +2
Electrons in clean macroscopic samples of graphene exhibit an astonishing variety of quantum phases when strong perpendicular magnetic field is applied. These include integer and f…
Josephson current signatures of the Majorana flat bands on the surface of time-reversal-invariant Weyl and Dirac semimetals
Anffany Chen, D. I. Pikulin, M. Franz
A linear Josephson junction mediated by the surface states of a time-reversal-invariant Weyl or Dirac semimetal localizes Majorana flat bands protected by the time-reversal symmetr…
Chiral anomaly from strain-induced gauge fields in Dirac and Weyl semimetals
D. I. Pikulin, Anffany Chen, M. Franz
Dirac and Weyl semimetals form an ideal platform for testing ideas developed in high energy physics to describe massless relativistic particles. One such quintessentially field-the…
Superconducting proximity effect and Majorana flat bands in the surface of a Weyl semimetal
Anffany Chen, M. Franz
We study the proximity effect between an s-wave superconductor (SC) and the surface states of a Weyl semimetal. An interesting two-dimensional SC forms in such an interface with pr…
Vacancy Effects on Electric and Thermoelectric Properties of Zigzag Silicene Nanoribbons
R. L. An, X. F. Wang, P. Vasilopoulos +4
We study the crystal reconstruction in the presence of monovacancies (MVs), divacancies (DVs) and linear vacancies (LVs) in a zigzag silicene nanoribbon (ZSiNR) with transversal sy…
Single and multiple doping effects on electron transport in zigzag silicene nanoribbons
J. Chen, X. F. Wang, P. Vasilopoulos +2
A nonequilibrium Green's function technique combined with density functional theory is used to study the spin-dependent electronic band structure and transport properties of zigzag…
Spin-dependent ballistic transport properties and electronic structures of pristine and edge-doped zigzag silicene nanoribbons: large magnetoresistance
A. B. Chen, X. F. Wang, P. Vasilopoulos +2
The electronic structure and conductance of substitutionally edge-doped zigzag silicene nanoribbons (ZSiNRs) are investigated using the nonequilibrium Green's function method combi…