173 citations · 600 across the 9 of their papers we have counts for
9 papers
Higher-order topological superconductors characterized by Fermi level crossings
Hong Wang, Xiaoyu Zhu
We demonstrate that level crossings at the Fermi energy serve as robust indicators for higher-order topology in two-dimensional superconductors of symmetry class D. These crossings…
Unveiling nontrivial fusion rule of Majorana zero mode using a fermionic mode
Yu Zhang, Xiaoyu Zhu, Chunhui Li +3
Fusing Majorana zero modes leads to multiple outcomes, a property being unique to non-Abelian anyons. Successful demonstration of this nontrivial fusion rule would be a hallmark fo…
Second-order Topological Superconductors with Mixed Pairing
Xiaoyu Zhu
We show that a two-dimensional semiconductor with Rashba spin-orbit coupling could be driven into the second-order topological superconducting phase when a mixed-pairing state is i…
Tunable Majorana corner states in a two-dimensional second-order topological superconductor induced by magnetic fields
Xiaoyu Zhu
A two-dimensional second-order topological superconductor exhibits a finite gap in both bulk and edges, with the nontrivial topology manifesting itself through Majorana zero modes…
Tricritical Ising phase transition in two-ladder Majorana fermion lattice
Xiaoyu Zhu, Marcel Franz
We introduce a two-ladder lattice model with interacting Majorana fermions that could be realized on the surfaces of a topological insulator film. We study this model by a combinat…
Interaction-enabled topological phases in topological insulator-superconductor heterostructures
D. I. Pikulin, Ching-Kai Chiu, Xiaoyu Zhu +1
Topological phases of matter that depend for their existence on interactions are fundamentally interesting and potentially useful as platforms for future quantum computers. Despite…
Phase Diagram of the Interacting Majorana Chain Model
Armin Rahmani, Xiaoyu Zhu, Marcel Franz +1
The Hubbard chain and spinless fermion chain are paradigms of strongly correlated systems, very well understood using Bethe ansatz, Density Matrix Renormalization Group (DMRG) and…
Emergent Supersymmetry from Strongly Interacting Majorana Zero Modes
Armin Rahmani, Xiaoyu Zhu, Marcel Franz +1
We show that a strongly interacting chain of Majorana zero modes exhibits a supersymmetric quantum critical point corresponding to the tricritical Ising model, whic…
Majorana and fractionally charged bound states in 1-D Rashba nanowire under spatially varying Zeeman fields
Xiaoyu Zhu, Wei Chen, R. Shen +1
We study topological phase transitions in one dimensional (1-D) Rashba nanowire under a spatially varying Zeeman field when coupled to an -wave superconductor substrate. We show…