scholarly journals Zero-bias peaks and splitting in an Al–InAs nanowire topological superconductor as a signature of Majorana fermions

2012 ◽  
Vol 8 (12) ◽  
pp. 887-895 ◽  
Author(s):  
Anindya Das ◽  
Yuval Ronen ◽  
Yonatan Most ◽  
Yuval Oreg ◽  
Moty Heiblum ◽  
...  
Keyword(s):  
Majorana Fermions ◽  
Zero Bias ◽  
Topological Superconductor

scholarly journals Topological isoconductance signatures in Majorana nanowires

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
L. S. Ricco ◽  
J. E. Sanches ◽  
Y. Marques ◽  
M. de Souza ◽  
M. S. Figueira ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Transport Properties ◽  
Spin Polarization ◽  
Bound States ◽  
Spin Asymmetry ◽  
Experimental Protocol ◽  
Zero Bias ◽  
Topological Superconductor ◽  
Hybrid Device ◽  
Majorana Bound States

AbstractWe consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if highly nonlocal and nonoverlapping MBSs are formed in the system, the zero-bias Andreev conductance through the dot exhibits characteristic isoconductance profiles with the shape depending on the spin asymmetry of the coupling between the dot and the topological superconductor. Otherwise, for overlapping MBSs with less degree of nonlocality, the conductance is insensitive to the spin polarization and the isoconductance signatures disappear. This allows to propose an alternative experimental protocol for probing the nonlocality of the MBSs in Majorana nanowires.

scholarly journals Evidence of Majorana fermions in the noise characteristic of normal metal–topological superconductor junctions

2020 ◽  
Vol 229 (4) ◽  
pp. 577-592
Author(s):  
Thibaut Jonckheere ◽  
Jérôme Rech ◽  
Laurent Raymond ◽  
Alex Zazunov ◽  
Reinhold Egger ◽  
...  
Keyword(s):  
Noise Characteristic ◽  
Normal Metal ◽  
Majorana Fermions ◽  
Topological Superconductor

scholarly journals Polygon sign rules of Majorana fermions in two-dimensional topological superconductors

2016 ◽  
Vol 30 (27) ◽  
pp. 1650213
Author(s):  
Qiu-Bo Cheng ◽  
Jing He ◽  
Jing Yu ◽  
Xiao-Ming Zhao ◽  
Su-Peng Kou
Keyword(s):  
Quantum Computation ◽  
Numerical Approach ◽  
Majorana Fermions ◽  
Two Dimensional ◽  
Line Defect ◽  
Topological Superconductor ◽  
Topological Superconductors ◽  
Topological Quantum ◽  
Different Types ◽  
Topological Quantum Computation

Recently, Majorana fermions (MFs) have attracted intensive attention due to their exotic statistics and possible applications in topological quantum computation. They are proposed to exist in various two-dimensional (2D) topological systems, such as [Formula: see text] topological superconductor (SC) and nanowire–superconducting hybridization system. In this paper, we point out that Majorana fermions in different topological systems obey different types of polygon sign rules. A numerical approach is described to identify the type of polygon sign rule of the Majorana fermions. Applying the approach to study two 2D topological systems, we find that vortex-induced Majorana fermions obey topological polygon sign rule and line-defect-induced Majorana fermions obey normal polygon sign rule.

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