scholarly journals Spatial fluctuations of helical Dirac fermions on the surface of topological insulators

2011 ◽  
Vol 7 (12) ◽  
pp. 939-943 ◽  
Author(s):  
Haim Beidenkopf ◽  
Pedram Roushan ◽  
Jungpil Seo ◽  
Lindsay Gorman ◽  
Ilya Drozdov ◽  
...  
Keyword(s):  
Topological Insulators ◽  
Dirac Fermions ◽  
Spatial Fluctuations

On a new type of massless Dirac fermions in crystalline topological insulators

JETP Letters ◽  
2013 ◽  
Vol 98 (5) ◽  
pp. 298-303 ◽  
Author(s):  
S. N. Molotkov ◽  
T. A. Potapova
Keyword(s):  
Topological Insulators ◽  
Dirac Fermions ◽  
New Type

scholarly journals Scanning Tunnelling Spectroscopic Studies of Dirac Fermions in Graphene and Topological Insulators

2012 ◽  
Vol 23 ◽  
pp. 00021 ◽  
Author(s):  
N.-C. Yeh ◽  
M. L. Teague ◽  
R. T.-P. Wu ◽  
H. Chu ◽  
D. A. Boyd ◽  
...  
Keyword(s):  
Topological Insulators ◽  
Spectroscopic Studies ◽  
Dirac Fermions ◽  
Scanning Tunnelling

scholarly journals Generation of spin-polarized hot electrons at topological insulators surfaces by scattering from collective charge excitations

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Khalil Zakeri ◽  
Janek Wettstein ◽  
Christoph Sürgers
Keyword(s):  
Topological Insulators ◽  
Spin Asymmetry ◽  
Surface States ◽  
Inelastic Channel ◽  
Dirac Fermions ◽  
Elastic Channel ◽  
Fundamental Physics ◽  
Spintronic Devices ◽  
Spin Polarized ◽  
New Ideas

AbstractTopological insulators (TIs) are materials which exhibit topologically protected electronic surface states, acting as mass-less Dirac fermions. Beside their fascinating fundamental physics, TIs are also promising candidates for future spintronic devices. In this regard, generation of spin-polarized currents in TIs is the first and most important step towards their application in spin-based devices. Here we demonstrate that when electrons are scattered from the surface of bismuth selenide, a prototype TI, not only the elastic channel but also the inelastic channel is strongly spin dependent. In particular collective charge excitations (plasmons) excited at such surfaces show a large spin-dependent electron scattering. Electrons scattered by these excitations exhibit a high spin asymmetry, as high as 40%. The observed effect opens up new possibilities to generate spin-polarized currents at the surface of TIs or utilize the collective charge excitations to analyze the electrons’ spin. The results are also important to understand the spin polarization of the photo-excited electrons excited at TIs surfaces. Moreover, our finding will inspire new ideas for using these plasmonic excitations in the field of spin-plasmonics.

scholarly journals THz Generation and Detection on Dirac Fermions in Topological Insulators

2013 ◽  
Vol 1 (11) ◽  
pp. 804-808 ◽  
Author(s):  
Chih Wei Luo ◽  
Hsueh-Ju Chen ◽  
Chien Ming Tu ◽  
Chia Ching Lee ◽  
Shin An Ku ◽  
...  
Keyword(s):  
Topological Insulators ◽  
Dirac Fermions ◽  
Thz Generation

scholarly journals Prolonged duration of nonequilibrated Dirac fermions in neutral topological insulators

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
K. Sumida ◽  
Y. Ishida ◽  
S. Zhu ◽  
M. Ye ◽  
A. Pertsova ◽  
...  
Keyword(s):  
Topological Insulators ◽  
Dirac Fermions ◽  
Prolonged Duration

Low-velocity anisotropic Dirac fermions on the side surface of topological insulators

2011 ◽  
Vol 84 (19) ◽  
Author(s):  
Chang-Youn Moon ◽  
Jinhee Han ◽  
Hyungjun Lee ◽  
Hyoung Joon Choi
Keyword(s):  
Topological Insulators ◽  
Side Surface ◽  
Dirac Fermions ◽  
Low Velocity

scholarly journals Enhanced Mobility of Spin-Helical Dirac Fermions in Disordered 3D Topological Insulators

Nano Letters ◽  
2016 ◽  
Vol 16 (11) ◽  
pp. 6733-6737 ◽  
Author(s):  
Joseph Dufouleur ◽  
Louis Veyrat ◽  
Bastien Dassonneville ◽  
Christian Nowka ◽  
Silke Hampel ◽  
...  
Keyword(s):  
Topological Insulators ◽  
Dirac Fermions ◽  
Enhanced Mobility
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