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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-based superconductor FeTe$_x$Se$_{1-x}$ is one of the…

超导电性 · 物理学 2020-03-10 Ching-Kai Chiu , T. Machida , Yingyi Huang , T. Hanaguri , Fu-Chun Zhang

The unambiguous detection of the Majorana zero mode (MZM), which is essential for future topological quantum computing, has been a challenge in recent condensed matter experiments. The MZM is expected to emerge at the vortex core of…

超导电性 · 物理学 2023-08-03 Tadashi Machida , Tetsuo Hanaguri

Majorana zero modes (MZMs) that obey the non-Abelian statistics have been intensively investigated for potential applications in topological quantum computing. The prevailing signals in tunneling experiments "fingerprinting" the existence…

超导电性 · 物理学 2020-03-27 Chaofei Liu , Cheng Chen , Xiaoqiang Liu , Ziqiao Wang , Yi Liu , Shusen Ye , Ziqiang Wang , Jiangping Hu , Jian Wang

The Majorana fermion, which is its own anti-particle and obeys non-abelian statistics, plays a critical role in topological quantum computing. It can be realized as a bound state at zero energy, called a Majorana zero mode (MZM), in the…

Majorana fermions have been intensively studied in recent years for their importance to both fundamental science and potential applications in topological quantum computing1,2. Majorana fermions are predicted to exist in a vortex core of…

Majorana quasi-particles may arise as zero-energy bound states in vortices on the surface of a topological insulator that is proximitized by a conventional superconductor. Such a system finds its natural realization in the iron-based…

超导电性 · 物理学 2021-03-24 Vedangi Pathak , Stephan Plugge , Marcel Franz

We study the conductance afforded by a normal-metal probe which is directly contacting the helical edge modes of a quantum spin Hall insulator (QSHI). We show a $2e^2/h$ conductance peak at zero temperature in QSHI-based…

介观与纳米尺度物理 · 物理学 2023-01-11 Bo Lu , Guanxin Cheng , Pablo Burset , Yukio Tanaka

The search for the Majorana fermions in condensed matter physics has attracted much attention, partially because they may be used for the fault-tolerant quantum computation. It has been predicted that the Majorana zero mode may exist in the…

超导电性 · 物理学 2019-09-05 Xiaoyu Chen , Mingyang Chen , Wen Duan , Xiyu Zhu , Huan Yang , Hai-Hu Wen

The topological properties observed in iron-based superconductors extend our understanding of vortex Majorana quasiparticle excitations in unexpected ways. Vortex Majorana physics has been extensively studied within the context of the…

Majorana zero mode is an exotic quasi-particle excitation with non-Abelian statistics in topological superconductor systems, and can serve as the cornerstone for topological quantum computation, a new type of fault-tolerant quantum…

超导电性 · 物理学 2022-04-27 Xianxin Wu , Rui-Xing Zhang , Gang Xu , Jiangping Hu , Chao-Xing Liu

Majorana quasiparticles (MQPs) in condensed matter play an important role in strategies for topological quantum computing but still remain elusive. Vortex cores of topological superconductors may accommodate MQPs that appear as the…

超导电性 · 物理学 2019-07-23 T. Machida , Y. Sun , S. Pyon , S. Takeda , Y. Kohsaka , T. Hanaguri , T. Sasagawa , T. Tamegai

Majorana zero-modes (MZMs) are spatially-localized zero-energy fractional quasiparticles with non-Abelian braiding statistics that hold a great promise for topological quantum computing. Due to its particle-antiparticle equivalence, an MZM…

Majorana bound states (MBSs) are quasiparticles which are their own antiparticles. They are predicted to emerge as zero-energy modes localized at the boundary of a topological superconductor. No intrinsic topological superconductor is known…

介观与纳米尺度物理 · 物理学 2024-09-27 William F. Schiela , Peng Yu , Javad Shabani

Vortices in topological superconductors host Majorana zero modes (MZMs), which are proposed to be building blocks of fault-tolerant topological quantum computers. Recently, a new single-material platform for realizing MZM has been…

Topological superconductivity supports exotic Majorana bound states (MBS) which are chargeless zero-energy emergent quasiparticles. With their non-Abelian exchange statistics and fractionalization of a single electron stored nonlocally as a…

介观与纳米尺度物理 · 物理学 2020-04-08 Tong Zhou , Matthieu C. Dartiailh , William Mayer , Jong E. Han , Alex Matos-Abiague , Javad Shabani , Igor Zutic

Majorana bound states are putative collective excitations in solids that exhibit the self-conjugate property of Majorana fermions - they are their own antiparticles. In iron-based superconductors, zero-energy states in vortices have been…

Vortices in topological superconductors are predicted to host Majorana bound states (MBSs) as exotic quasiparticles. In recent experiments, the spatially non-split zero-energy vortex bound state in topological superconductors has been…

超导电性 · 物理学 2024-06-12 Howon Kim , Yuki Nagai , Levente Rózsa , Dominik Schreyer , Roland Wiesendanger

Motivated by the striking promise of quantum computation, Majorana bound states (MBSs) in solid-state systems have attracted wide attention in recent years. In particular, the wavefunction localization of MBSs is a key feature and crucial…

原子与分子团簇 · 物理学 2016-12-07 Remy Pawlak , Marcin Kisiel , Jelena Klinovaja , Tobias Meier , Shigeki Kawai , Thilo Glatzel , Daniel Loss , Ernst Meyer

The vortex of iron-based superconductors is emerging as a promising platform for Majorana zero mode, owing to a magic integration among intrinsic vortex winding, non-trivial band topology, strong electron-electron correlations, high-Tc…

超导电性 · 物理学 2021-08-31 Lingyuan Kong , Hong Ding

Topological superconductors, whose edge hosts Majorana bound states or Majorana fermions that obey non-Abelian statistics, can be used for low-decoherence quantum computations. Most of the proposed topological superconductors are realized…

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