Publications (7)
Drumhead Surface States and Topological Nodal-Line Fermions in TlTaSe2
Guang Bian, Tay-Rong Chang, Hao Zheng +13
A topological nodal-line semimetal is a new condensed matter state with one-dimensional bulk nodal lines and two-dimensional drumhead surface bands. Based on first-principles calcu…
Global and Local Topological Crystalline Markers for Rotation-Symmetric Insulators
Saavanth Velury, Yoonseok Hwang, Taylor L. Hughes
Crystalline symmetry can be used to predict bulk and surface properties of topological phases. For non-interacting cases, symmetry-eigenvalue analysis of Bloch states at high symme…
Quasiparticle Variational Quantum Eigensolver
Saavanth Velury, Yuxuan Wang
We propose a momentum-space based variational quantum eigensolver (VQE) framework for simulating quasiparticle excitations in interacting quantum many-body systems on near-term qua…
Fragile Topology is Unstable Under Translation Refinement
Yoonseok Hwang, Saavanth Velury, Taylor L. Hughes
Fragile topological phases become trivial upon the addition of suitable trivial bands, distinguishing them from stable topological phases. Nevertheless, various response phenomena…
Topological Crystalline Phases in a Disordered Inversion-Symmetric Chain
Saavanth Velury, Barry Bradlyn, Taylor L. Hughes
When translational symmetry is broken by bulk disorder, the topological nature of states in topological crystalline systems may change depending on the type of disorder that is app…
Embedded Topological Semimetals
Saavanth Velury, Taylor L. Hughes
Topological semimetals, such as Dirac, Weyl, or line-node semimetals, are gapless states of matter characterized by their nodal band structures and surface states. In this work, we…
Direct Transition Resonance in Atomically Uniform Topological Sb(111) Thin Films
Guang Bian, Caizhi Xu, Tay-Rong Chang +8
Atomically uniform Sb(111) films are fabricated by the method of molecular beam epitaxy on an optimized Si(111) surface. Two dimensional quantum well states and topological surface…