111 citations · 226 across the 12 of their papers we have counts for
8 papers · 1 filter
Quantum Phase Transitions and Fractional Quantized Anomalous Hall Insulators in Rhombohedral Graphene
Zach Hadjri, Xinlei Yue, Tonghang Han +10
Fractional quantum anomalous Hall effect (FQAHE) has been discovered in twisted MoTe and rhombohedral graphene/hBN moiré superlattices. Such van der Waals heterostructures feat…
Aharonov-Bohm Interference in Even-Denominator Fractional Quantum Hall States
Jehyun Kim, Himanshu Dev, Amit Shaer +9
Position exchange of non-Abelian anyons affects the quantum state of their system in a topologically-protected way. Their expected manifestations in even-denominator fractional qua…
Even Integer Quantum Hall Effect in Materials with Hidden Spin Texture
Daniel Kaplan, Ady Stern, Binghai Yan
Because spin-orbit coupling (SOC) is invisible in the band structure when inversion symmetry exists, whether spins are trivially degenerate or strongly coupled to momentum due to S…
Even-integer Quantum Hall Effect in an Oxide Caused by Hidden Rashba Effect
Jingyue Wang, Junwei Huang, Daniel Kaplan +17
In the presence of high magnetic field, quantum Hall systems usually host both even- and odd-integer quantized states because of lifted band degeneracies. Selective control of thes…
Theory of Half-Integer Fractional Quantum Spin Hall Insulator Edges
Julian May-Mann, Ady Stern, Trithep Devakul
We study the edges of fractional quantum spin Hall insulators (FQSH) with half-integer spin Hall conductance. These states can be viewed as symmetric combinations of a spin-up and…
Aharonov-Bohm interference and the evolution of phase jumps in fractional quantum Hall Fabry-Perot interferometers based on bi-layer graphene
Jehyun Kim, Himanshu Dev, Ravi Kumar +8
Quasi-particles in fractional quantum Hall states are collective excitations that carry fractional charge and anyonic statistics. While the fractional charge affects semi-classical…
Current Induced Hidden States in Josephson Junctions
Shaowen Chen, Seunghyun Park, Uri Vool +8
Josephson junctions enable dissipation-less electrical current through metals and insulators below a critical current. Despite being central to quantum technology based on supercon…
Dissipationless transport in low density bilayer systems
Ady Stern, S. Das Sarma, Matthew P. A. Fisher +1
In a bilayer electronic system the layer index may be viewed as the z-component of an isospin-1/2. An XY isospin-ordered ferromagnetic phase was observed in quantum Hall systems an…