82 citations · 208 across the 16 of their papers we have counts for
16 papers
Superconductivity and magnetic ordering in chalcogen-intercalated graphene bilayers with charge compensation
Tommy Li
This work introduces a new class of two-dimensional crystals with the structure ACXC, consisting of two layers of graphene, a chalcogen (X = O, S, Se, Te) intercalation lay…
Axionic Instability of Periodic Weyl-Semimetal Superstructures
Tommy Li, Maxim Breitkreiz
Weyl-semimetal superstructures with a spiraling position of a pair of Weyl nodes of opposite chirality can host a chiral-symmetry preserving Fermi-arc metal state, where the chiral…
Quadratic Dirac fermions and the competition of ordered states in twisted bilayer graphene
Julian Ingham, Tommy Li, Mathias S. Scheurer +1
Magic-angle twisted bilayer graphene (TBG) exhibits a captivating phase diagram as a function of doping, featuring superconductivity and a variety of insulating and magnetic states…
Chiral excitonic order from twofold van Hove singularities in kagome metals
Harley D. Scammell, Julian Ingham, Tommy Li +1
Recent experiments on kagome metals AVSb (A=K,Rb,Cs) [M. Kang et al., Nat. Phys. 18, 301-308 (2022)] identify twofold van Hove singularities (TvHS) with opposite concavity…
Nested Fermi surfaces and correlated electronic phases in hole-doped semiconductor quantum wells
Tommy Li, Julian Ingham, Harley D. Scammell
We demonstrate the existence of novel interaction effects in hole-doped semiconductor quantum wells which are connected to dramatic changes in the Fermi surface geometry occurring…
Intrinsic first and higher-order topological superconductivity in a doped topological insulator
Harley D. Scammell, Julian Ingham, Max Geier +1
We explore higher order topological superconductivity in an artificial Dirac material with intrinsic spin-orbit coupling, which is a doped topological insulator in t…
Higher-order topological superconductivity from repulsive interactions in kagome and honeycomb systems
Tommy Li, Max Geier, Julian Ingham +1
We discuss a pairing mechanism in interacting two-dimensional multipartite lattices that intrinsically leads to a second order topological superconducting state with a spatially mo…
Artificial Graphene: Unconventional Superconductivity in a Honeycomb Superlattice
Tommy Li, Julian Ingham, Harley D. Scammell
Artificial lattices have served as a platform to study the physics of unconventional superconductivity. We study semiconductor artificial graphene -- a honeycomb superlattice impos…
Symmetry-protected spin gaps in quantum wires
Tommy Li
This work shows that a strongly correlated phase which is gapped to collective spin excitations but gapless to charge fluctuations emerges as a universal feature in one-dimensional…
Coulomb-interaction-induced Majorana edge modes in nanowires
Tommy Li, Michele Burrello, Karsten Flensberg
We show that Majorana edge modes appear in a strongly correlated phase of semiconducting nanowires with discrete rotational symmetry in the cross section. These modes exist in the…
Four-Majorana qubit with charge readout: dynamics and decoherence
Tommy Li, William A. Coish, Michael Hell +2
We present a theoretical analysis of a Majorana-based qubit consisting of two topological superconducting islands connected via a Josephson junction. The qubit is operated by elect…
Two-dimensional topological semimetal state in a nanopatterned semiconductor system
Tommy Li, Oleg P. Sushkov
We propose the creation of a two-dimensional topological semimetal in a semiconductor artificial lattice with triangular symmetry. An in-plane magnetic field drives a quantum phase…
Chern insulating state in laterally patterned semiconductor heterostructures
Tommy Li, Oleg P. Sushkov
Hexagonally patterned two-dimensional -type semiconductor systems are quantum simulators of graphene with strong and highly tunable spin-orbit interactions. We show that applica…
Semiclassical Landau quantization of spin-orbit coupled systems
Tommy Li, Baruch Horovitz, Oleg P. Sushkov
A semiclassical quantization condition is derived for Landau levels in general spin-orbit coupled systems. This generalizes the Onsager quantization condition via a matrix-valued p…
Confinement of spin-orbit induced Dirac states in quantum point contacts
Tommy Li
The quantum transmission problem for a particle moving in a quantum point contact in the presence of a Rashba spin-orbit interaction and applied magnetic field is solved semiclassi…
A one-dimensional spin-orbit interferometer
T. Li, O. P. Sushkov
We demonstrate that the combination of an external magnetic field and the intrinsic spin-orbit interaction results in nonadiabatic precession of the electron spin after transmissio…