207 citations · 921 across the 20 of their papers we have counts for
20 papers
Theory of Second-Order Topological Superconductors
Zi-Ming Wang, Meng Zeng, Chen Lu +4
Topological superconductors are a class of unconventional superconducting materials featuring sub-gap zero-energy Majorana bound modes that hold promise as a building block for top…
Concurrent Ferromagnetism and Superconductivity in Fe(Te,Se) van der Waals Josephson Junctions
Gang Qiu, Hung-Yu Yang, Lunhui Hu +9
Ferromagnetism and superconductivity are two key ingredients to create non-Abelian quasiparticle excitations that are expected as building blocks to construct topological quantum c…
Intrinsically Interacting Higher-Order Topological Superconductors
Hao-Ran Zhang, Jian-Hao Zhang, Zheng-Cheng Gu +2
We propose a minimal interacting lattice model for two-dimensional class- higher-order topological superconductors with no free-fermion counterpart. A Lieb-Schultz-Mattis-type c…
Bulk-Vortex Correspondence of Higher-Order Topological Superconductors
Rui-Xing Zhang
Vortices in chiral topological superconductors are known for trapping Majorana zero modes as a signature response to their bulk-state topologies. In this work, we establish a simil…
Dislocation Majorana Bound States in Iron-based Superconductors
Lun-Hui Hu, Rui-Xing Zhang
We show that lattice dislocations of topological iron-based superconductors such as FeTeSe will intrinsically trap non-Abelian Majorana quasiparticles, in the absence o…
Topological Superconducting Vortex From Trivial Electronic Bands
Lun-Hui Hu, Rui-Xing Zhang
Superconducting vortices are promising traps to confine non-Abelian Majorana quasi-particles. It has been widely believed that bulk-state topology, of either normal-state or superc…
Competing Vortex Topologies in Iron-based Superconductors
Lun-Hui Hu, Xianxin Wu, Chao-Xing Liu +1
In this work, we establish a new theoretical paradigm for vortex Majorana physics in the recently discovered topological iron-based superconductors (tFeSCs). While tFeSCs are widel…
Superconductors with anomalous Floquet higher-order topology
DinhDuy Vu, Rui-Xing Zhang, Zhi-Cheng Yang +1
We develop a general theory for two-dimensional (2D) anomalous Floquet higher-order topological superconductors (AFHOTSC), which are dynamical Majorana-carrying phases of matter wi…
Intrinsic Time-reversal-invariant Topological Superconductivity in Thin Films of Iron-based Superconductors
Rui-Xing Zhang, S. Das Sarma
We establish quasi-two-dimensional thin films of iron-based superconductors (FeSCs) as a new high-temperature platform for hosting intrinsic time-reversal-invariant helical topolog…
Anomalous Floquet Chiral Topological Superconductivity in a Topological Insulator Sandwich Structure
Rui-Xing Zhang, S. Das Sarma
We show that Floquet chiral topological superconductivity arises naturally in Josephson junctions made of magnetic topological insulator-superconductor sandwich structures. The Jos…
Theory of Anomalous Floquet Higher-Order Topology: Classification, Characterization, and Bulk-Boundary Correspondence
Rui-Xing Zhang, Zhi-Cheng Yang
Periodically-driven or Floquet systems can realize anomalous topological phenomena that do not exist in any equilibrium states of matter, whose classification and characterization…
Tunable Fragile Topology in Floquet Systems
Rui-Xing Zhang, Zhi-Cheng Yang
We extend the notion of fragile topology to periodically-driven systems. We demonstrate driving-induced fragile topology in two different models, namely, the Floquet honeycomb mode…
Time-reversal-invariant -symmetric higher-order topological superconductors
DinhDuy Vu, Rui-Xing Zhang, Sankar Das Sarma
We propose a minimal lattice model for two-dimensional class DIII superconductors with -protected higher-order topology. While this class of superconductors cannot be topologi…
Kitaev Building-block Construction for Inversion-Protected Higher-order Topological Superconductors
Rui-Xing Zhang, Jay D. Sau, S. Das Sarma
We propose a general theoretical framework for both constructing and diagnosing inversion-protected higher-order topological superconductors using Kitaev building blocks, a higher-…
Interacting topological mirror excitonic insulator in one dimension
Lun-Hui Hu, Rui-Xing Zhang, Fu-Chun Zhang +1
We introduce the topological mirror excitonic insulator as a new type of interacting topological crystalline phase in one dimension. Its mirror-symmetry-protected topological prope…
Möbius Insulator and Higher-Order Topology in MnBiTe
Rui-Xing Zhang, Fengcheng Wu, S. Das Sarma
We propose MnBiTe as a magnetically tunable platform for realizing various symmetry-protected higher-order topology. Its canted antiferromagnetic phase can host exo…
Higher-Order Topological Dirac Superconductors
Rui-Xing Zhang, Yi-Ting Hsu, S. Das Sarma
We introduce higher-order topological Dirac superconductor (HOTDSC) as a new gapless topological phase of matter in three dimensions, which extends the notion of Dirac phase to a h…
Three-Dimensional Topological Twistronics
Fengcheng Wu, Rui-Xing Zhang, Sankar Das Sarma
We introduce a theoretical framework for the new concept of three-dimensional (3D) twistronics by developing a generalized Bloch band theory for 3D layered systems with a constant…
Higher Order Topology and Nodal Topological Superconductivity in Fe(Se,Te) Heterostructures
Rui-Xing Zhang, William S. Cole, Xianxin Wu +1
We show theoretically that a heterostructure of monolayer FeTeSe - a superconducting quantum spin Hall material - with a monolayer of FeTe - a bicollinear antiferromagn…
A valley valve and electron beam splitter
Jing Li, Rui-Xing Zhang, Zhenxi Yin +5
Developing alternative paradigms of electronics beyond silicon technology requires the exploration of fundamentally new physical mechanisms, such as the valley specific phenomena i…