scholarly journals Straining topological insulators as a way to detect Majorana fermions

2011 ◽  
Vol 84 (4) ◽  
Author(s):  
Andrej Mesaros ◽  
Stefanos Papanikolaou ◽  
Jan Zaanen
Keyword(s):  
Topological Insulators ◽  
Majorana Fermions

scholarly journals Creating Majorana fermions in topological insulators

2014 ◽  
Vol 1 (1) ◽  
pp. 36-37 ◽  
Author(s):  
Canhua Liu ◽  
Jin-Feng Jia
Keyword(s):  
Topological Insulators ◽  
Majorana Fermions

Topological Superconductors and Majorana Fermions

2017 ◽  
Author(s):  
Y.Y. Li ◽  
J.F. Jia
Keyword(s):  
Quantum State ◽  
Topological Insulators ◽  
Surface States ◽  
Proximity Effects ◽  
Majorana Fermions ◽  
Topological Superconductors ◽  
Atomic Chains ◽  
Recent Developments ◽  
State Of Matter ◽  
Topological Superconductivity

This article discusses recent developments relating to the so-called topological superconductors (TSCs), which have a full pairing gap in the bulk and gapless surface states consisting of Majorana fermions (MFs). It first provides a background on topological superconductivity as a novel quantum state of matter before turning to topological insulators (TIs) and superconducting heterostructures, with particular emphasis on the vortices of such materials and the Majorana mode within a vortex. It also considers proposals for realizing TSCs by proximity effects through TI/SC heterostructures as well as experimental efforts to fabricate artificial TSCs using nanowires, superconducting junctions, and ferromagnetic atomic chains on superconductors.

scholarly journals Proximity-Induced Superconducting States of Magnetically Doped 3D Topological Insulators with High Bulk Insulation

2019 ◽  
Vol 4 (1) ◽  
pp. 9 ◽  
Author(s):  
Rikizo Yano ◽  
Hishiro Hirose ◽  
Kohei Tsumura ◽  
Shuhei Yamamoto ◽  
Masao Koyanagi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Topological Insulators ◽  
Surface States ◽  
Proximity Effects ◽  
Majorana Fermions ◽  
Bulk Carrier ◽  
Metallic Conduction ◽  
Bulk Single Crystals ◽  
High Bulk ◽  
Insulating Properties

We studied magnetized topological insulator/superconductor junctions with the expectation of unconventional superconductive states holding Majorana fermions induced by superconductive proximity effects on the surface states of magnetized topological insulators (TIs), attached by conventional superconductors. We introduced Fe-doped BiSbTe2Se as an ideal magnetic TI and used the developed junction fabrication process to access the proximity-induced surface superconducting states. The bulk single crystals of the Fe-doped TI showed excellent bulk-insulating properties and ferromagnetism simultaneously at a low temperature. Meanwhile, the fabricated junctions also showed an insulating behavior above 100 K, as well as metallic conduction at a low temperature, which reflects bulk carrier freezing. In addition, we observed a proximity-induced gap structure in the conductance spectra. These results indicate that the junctions using the established materials and process are preferable to observe unconventional superconducting states which are induced via the surface channels of the magnetized TI. We believe that the developed process can be applied for the fabrication of complicated junctions and suites for braiding operations.

scholarly journals Proximity-InducedπJosephson Junctions in Topological Insulators and Kramers Pairs of Majorana Fermions

2015 ◽  
Vol 115 (23) ◽  
Author(s):  
Constantin Schrade ◽  
A. A. Zyuzin ◽  
Jelena Klinovaja ◽  
Daniel Loss
Keyword(s):  
Topological Insulators ◽  
Majorana Fermions
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