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Ordered and tunable Majorana-zero-mode lattice in naturally strained LiFeAs
Meng Li, Geng Li, Lu Cao +7
Majorana zero modes (MZMs) obey non-Abelian statistics and are considered building blocks for constructing topological qubits. Iron-based superconductors with topological band stru…
Yu-Shiba-Rusinov states in a superconductor with topological Z2 bands
Ching-Kai Chiu, Ziqiang Wang
A Yu-Shiba-Rusinov (YSR) state is a localized in-gap state induced by a magnetic impurity in a superconductor. Recent experiments used an STM tip to manipulate the exchange couplin…
Vortex Majorana braiding in a finite time
Thore Posske, Ching-Kai Chiu, Michael Thorwart
Abrikosov vortices in Fe-based superconductors are a promising platform for hosting Majorana zero modes. Their adiabatic exchange is a key ingredient for Majorana-based quantum com…
Scalable Majorana vortex modes in iron-based superconductors
Ching-Kai Chiu, T. Machida, Yingyi Huang +2
A vortex in an s-wave superconductor with a surface Dirac cone can trap a Majorana bound state with zero energy leading to a zero-bias peak (ZBP) of tunneling conductance. The iron…
Helical Majorana edge mode in a superconducting antiferromagnetic quantum spin Hall insulator
Yingyi Huang, Ching-Kai Chiu
A two-dimensional time-reversal symmetric topological superconductor is a fully gapped system possessing a helical Majorana mode on the edges. This helical Majorana edge mode (HMEM…
Chiral Majorana Fermion Modes on the Surface of Superconducting Topological Insulators
Ching-Kai Chiu, Guang Bian, Hao Zheng +4
The surface of superconducting topological insulators (STIs) has been recognized as an effective superconductivity platform for realizing elusive Majorana fermions. Chira…