10 citations · 14 across the 3 of their papers we have counts for
8 papers
Finite-temperature spectroscopy of dirty helical Luttinger liquids
Tzu-Chi Hsieh, Yang-Zhi Chou, Leo Radzihovsky
We develop a theory of finite-temperature momentum-resolved tunneling spectroscopy (MRTS) for disordered, interacting two-dimensional topological-insulator edges. The MRTS compleme…
Hofstadter butterfly and Floquet topological insulators in minimally twisted bilayer graphene
Yang-Zhi Chou, Fengcheng Wu, Sankar Das Sarma
We theoretically study the Hofstadter butterfly of a triangular network model in minimally twisted bilayer graphene (mTBLG). The band structure manifests periodicity in energy, mim…
Nonmonotonic plasmon dispersion in strongly interacting Coulomb Luttinger liquids
Yang-Zhi Chou, Sankar Das Sarma
We demonstrate that the plasmon in one-dimensional Coulomb interacting electron fluids can develop a finite-momentum maxon-roton-like nonmonotonic energy-momentum dispersion. Such…
Anomalous localization at the boundary of an interacting topological insulator
Itamar Kimchi, Yang-Zhi Chou, Rahul M. Nandkishore +1
The boundary of a topological insulator (TI) hosts an anomaly restricting its possible phases: e.g. 3D strong and weak TIs maintain surface conductivity at any disorder if symmetry…
Magic-Angle Semimetals with Chiral Symmetry
Yang-Zhi Chou, Yixing Fu, Justin H. Wilson +2
We construct and solve a two-dimensional, chirally symmetric model of Dirac cones subjected to a quasiperiodic modulation. In real space, this is realized with a quasiperiodic hopp…
Superconductor versus insulator in twisted bilayer graphene
Yang-Zhi Chou, Yu-Ping Lin, Sankar Das Sarma +1
We present a simple model that we believe captures the key aspects of the competition between superconducting and insulating states in twisted bilayer graphene. Within this model,…