689 citations · 1.8k across the 21 of their papers we have counts for
22 papers
Symmetry-broken metallic orders in spin-orbit-coupled Bernal bilayer graphene
Jin Ming Koh, Alex Thomson, Jason Alicea +1
We explore Bernal bilayer graphene in the presence of long-range Coulomb interactions, short-range Hund's coupling, and proximity-induced Ising spin-orbit coupling using self-consi…
Imaging inter-valley coherent order in magic-angle twisted trilayer graphene
Hyunjin Kim, Youngjoon Choi, Étienne Lantagne-Hurtubise +12
Magic-angle twisted trilayer graphene (MATTG) exhibits a range of strongly correlated electronic phases that spontaneously break its underlying symmetries. The microscopic nature o…
Andreev reflection spectroscopy in strongly paired superconductors
Cyprian Lewandowski, Étienne Lantagne-Hurtubise, Alex Thomson +2
Motivated by recent experiments on low-carrier-density superconductors, including twisted multilayer graphene, we study signatures of the BCS to BEC evolution in Andreev reflection…
Spin-Orbit Enhanced Superconductivity in Bernal Bilayer Graphene
Yiran Zhang, Robert Polski, Alex Thomson +7
In the presence of a large perpendicular electric field, Bernal-stacked bilayer graphene (BLG) features several broken-symmetry metallic phases as well as magnetic-field-induced su…
Ascendance of Superconductivity in Magic-Angle Graphene Multilayers
Yiran Zhang, Robert Polski, Cyprian Lewandowski +10
Graphene moire superlattices have emerged as a platform hosting and abundance of correlated insulating, topological, and superconducting phases. While the origins of strong correla…
Spectroscopic Signatures of Strong Correlations and Unconventional Superconductivity in Twisted Trilayer Graphene
Hyunjin Kim, Youngjoon Choi, Cyprian Lewandowski +7
Magic-angle twisted trilayer graphene (MATTG) has emerged as a novel moiré material that exhibits both strong electronic correlations and unconventional superconductivity. However,…
Gate-defined wires in twisted bilayer graphene: from electrical detection of inter-valley coherence to internally engineered Majorana modes
Alex Thomson, Ina Sorensen, Stevan Nadj-Perge +1
Twisted bilayer graphene (TBG) realizes a highly tunable, strongly interacting system featuring superconductivity and various correlated insulating states. We establish gate-define…
Deconfined criticality and a gapless spin liquid in the square lattice antiferromagnet
Leyna Shackleton, Alex Thomson, Subir Sachdev
The theory for the vanishing of Néel order in the spin square lattice antiferromagnet has been the focus of attention for many decades. A consensus appears to have emerged…
Interaction-driven Band Flattening and Correlated Phases in Twisted Bilayer Graphene
Youngjoon Choi, Hyunjin Kim, Cyprian Lewandowski +8
Flat electronic bands, characteristic of magic-angle twisted bilayer graphene (TBG), host a wealth of correlated phenomena. Early theoretical considerations suggested that, at the…
Tracing out Correlated Chern Insulators in Magic Angle Twisted Bilayer Graphene
Youngjoon Choi, Hyunjin Kim, Yang Peng +9
Magic-angle twisted bilayer graphene (MATBG) exhibits a range of correlated phenomena that originate from strong electron-electron interactions. These interactions make the Fermi s…
Superconductivity without insulating states in twisted bilayer graphene stabilized by monolayer WSe
Harpreet Singh Arora, Robert Polski, Yiran Zhang +11
Magic-angle twisted bilayer graphene (TBG), with rotational misalignment close to 1.1, features isolated flat electronic bands that host a rich phase diagram of correlated…
Recovery of massless Dirac fermions at charge neutrality in strongly interacting twisted bilayer graphene with disorder
Alex Thomson, Jason Alicea
Stacking two graphene layers twisted by the 'magic angle' generates flat energy bands, which in turn catalyzes various strongly correlated phenomena depending…
Collusion of Interactions and Disorder at the Superfluid-Insulator Transition: A Dirty 2d Quantum Critical Point
Hart Goldman, Alex Thomson, Laimei Nie +1
We study the stability of the Wilson-Fisher fixed point of the quantum vector model to quenched disorder in the large- limit. While a random mass is strongly re…
Imaging Electronic Correlations in Twisted Bilayer Graphene near the Magic Angle
Youngjoon Choi, Jeannette Kemmer, Yang Peng +11
Twisted bilayer graphene with a twist angle of around 1.1° features a pair of isolated flat electronic bands and forms a strongly correlated electronic platform. Here, we use scann…
Simulating spin systems with Majorana networks
Alex Thomson, Falko Pientka
With the discovery of Majorana quasiparticles in semiconductor-superconductor hybrid structures, topologically protected qubits have emerged as a promising contender for quantum in…
Triangular antiferromagnetism on the honeycomb lattice of twisted bilayer graphene
Alex Thomson, Shubhayu Chatterjee, Subir Sachdev +1
We present the electronic band structures of states with the same symmetry as the three-sublattice planar antiferromagnetic order of the triangular lattice. Such states can also be…
Deconfined Quantum Critical Point on the Triangular Lattice
Chao-Ming Jian, Alex Thomson, Alex Rasmussen +2
We first propose a topological term that captures the "intertwinement" between the standard "" antiferromagnetic order (or the so-called 120 state…
Fermionic spinon theory of square lattice spin liquids near the Néel state
Alex Thomson, Subir Sachdev
Quantum fluctuations of the Néel state of the square lattice antiferromagnet are usually described by a theory of bosonic spinons coupled to a U(1) gauge field, and…
QED with quenched disorder: quantum critical states with interactions and disorder
Alex Thomson, Subir Sachdev
Quantum electrodynamics in 2+1-dimensions (QED) is a strongly coupled conformal field theory (CFT) of a U(1) gauge field coupled to two-component massless fermions. The $N…
Spectrum of conformal gauge theories on a torus
Alex Thomson, Subir Sachdev
Many model quantum spin systems have been proposed to realize critical points or phases described by 2+1 dimensional conformal gauge theories. On a torus of size and modular pa…
Fractionalized Fermi liquid on the surface of a topological Kondo insulator
Alex Thomson, Subir Sachdev
We argue that topological Kondo insulators can also have 'intrinsic' topological order associated with fractionalized excitations on their surfaces. The hydridization between the l…
Charge ordering in three-band models of the cuprates
Alexandra Thomson, Subir Sachdev
We examine trends in the wavevectors and form-factors of charge density wave instabilities of three-band models of the underdoped cuprates. For instabilities from a high temperatur…