scholarly journals Anisotropic non-split zero-energy vortex bound states in a conventional superconductor

2021 ◽  
Vol 8 (3) ◽  
pp. 031417
Author(s):  
Howon Kim ◽  
Yuki Nagai ◽  
Levente Rózsa ◽  
Dominik Schreyer ◽  
Roland Wiesendanger
Keyword(s):  
Bound States ◽  
Zero Energy ◽  
Conventional Superconductor

scholarly journals Spectral singularities and zero energy bound states

2011 ◽  
Vol 63 (3) ◽  
pp. 369-373 ◽  
Author(s):  
W. D. Heiss ◽  
R. G. Nazmitdinov
Keyword(s):  
Bound States ◽  
Zero Energy ◽  
Spectral Singularities ◽  
Energy Bound

Zero-energy scattering and bound states in theHe4trimer and tetramer

1983 ◽  
Vol 28 (2) ◽  
pp. 692-696 ◽  
Author(s):  
S. Nakaichi-Maeda ◽  
T. K. Lim
Keyword(s):  
Bound States ◽  
Zero Energy ◽  
Energy Scattering

Exact zero energy bound states of a model potential for quantum dots

2000 ◽  
Vol 276 (5-6) ◽  
pp. 240-244 ◽  
Author(s):  
Sergio De Filippo ◽  
Mario Salerno ◽  
Victor Z. Enolskii
Keyword(s):  
Quantum Dots ◽  
Bound States ◽  
Model Potential ◽  
Zero Energy ◽  
Energy Bound

scholarly journals Zero-energy bound states in the high-temperature superconductors at the two-dimensional limit

2020 ◽  
Vol 6 (13) ◽  
pp. eaax7547 ◽  
Author(s):  
Chaofei Liu ◽  
Cheng Chen ◽  
Xiaoqiang Liu ◽  
Ziqiao Wang ◽  
Yi Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Bound States ◽  
High Temperature Superconductors ◽  
Scanning Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Two Dimensional ◽  
Zero Energy ◽  
Topological Superconductors ◽  
Topological Quantum ◽  
Energy Bound

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 of MZMs are the zero-energy bound states (ZEBSs). However, nearly all of the previously reported ZEBSs showing signatures of the MZMs are observed in difficult-to-fabricate heterostructures at very low temperatures and additionally require applied magnetic field. Here, by using in situ scanning tunneling spectroscopy, we detect the ZEBSs upon the interstitial Fe adatoms deposited on two different high-temperature superconducting one-unit-cell iron chalcogenides on SrTiO3(001). The spectroscopic results resemble the phenomenological characteristics of the MZMs inside the vortex cores of topological superconductors. Our experimental findings may extend the MZM explorations in connate topological superconductors toward an applicable temperature regime and down to the two-dimensional (2D) limit.

scholarly journals Delocalisation of Majorana quasiparticles in plaquette–nanowire hybrid system

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Aksel Kobiałka ◽  
Tadeusz Domański ◽  
Andrzej Ptok
Keyword(s):  
Bound States ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Edge States ◽  
Zero Energy ◽  
One Dimensional ◽  
Majorana Bound States ◽  
Entire Structure ◽  
Majorana Modes

Abstract Interplay between superconductivity, spin-orbit coupling and magnetic field can lead to realisation of the topologically non–trivial states which in finite one dimensional nanowires are manifested by emergence of a pair of zero-energy Majorana bound states. On the other hand, in two dimensional systems the chiral edge states can appear. We investigate novel properties of the bound states in a system of mixed dimensionality, composed of one-dimensional nanowire connected with two-dimensional plaquette. We study this system, assuming either its part or the entire structure to be in topologically non–trivial superconducting state. Our results show delocalisation of the Majorana modes, upon leaking from the nanowire to the plaquette with some tendency towards its corners.

scholarly journals Quantum Interference Effects in Quantum Dot Molecular With Majorana Bound States

2021 ◽  
Vol 8 ◽  
Author(s):  
Feng Chi ◽  
Jing Wang ◽  
Tian-Yu He ◽  
Zhen-Guo Fu ◽  
Ping Zhang ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Bound States ◽  
Quantum Information Processing ◽  
Bound State ◽  
Double Quantum ◽  
Zero Energy ◽  
Non Invasive ◽  
Majorana Bound States ◽  
Quantum Interference Effect ◽  
Core Issues

Non-invasive detection of the Majorana bound state (MBSs), a kind of quasiparticle without charge and mass, is one of the core issues in current condensed matter physics. Here we study in theory the quantum interference effect in parallel-coupled double quantum dots which are connected either by Majorana bound states (MBSs) or regular fermions. We find that the zero-energy conductance develops a sharp peak when the dots are connected by the MBSs, whereas that in the case of the dots are coupled via regular fermions shows a valley. By varying the coupling strength between the dots and the electron reservoirs, the conductance in the two structures changes in different ways. By comparing the properties of the linear conductance in the two systems, the information of the MBSs formed at the two ends of a topological superconductor nanowire then can be inferred. We also find that the MBSs in the present structure also induces the Fano effect, and is favorable in quantum information processing.

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