scholarly journals Dynamics of domain-wall Dirac fermions on a topological insulator: A chiral fermion beam splitter

2013 ◽  
Vol 88 (23) ◽  
Author(s):  
René Hammer ◽  
Walter Pötz
Keyword(s):  
Domain Wall ◽  
Topological Insulator ◽  
Beam Splitter ◽  
Dirac Fermions ◽  
Chiral Fermion

scholarly journals Topological Insulator-Based van der Waals Heterostructures for Effective Control of Massless and Massive Dirac Fermions

Nano Letters ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 8047-8053 ◽  
Author(s):  
Su Kong Chong ◽  
Kyu Bum Han ◽  
Akira Nagaoka ◽  
Ryuichi Tsuchikawa ◽  
Renlong Liu ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Van Der Waals ◽  
Effective Control ◽  
Dirac Fermions ◽  
Van Der Waals Heterostructures

scholarly journals Unexpected mass acquisition of Dirac fermions at the quantum phase transition of a topological insulator

2011 ◽  
Vol 7 (11) ◽  
pp. 840-844 ◽  
Author(s):  
T. Sato ◽  
Kouji Segawa ◽  
K. Kosaka ◽  
S. Souma ◽  
K. Nakayama ◽  
...  
Keyword(s):  
Phase Transition ◽  
Topological Insulator ◽  
Quantum Phase Transition ◽  
Quantum Phase ◽  
Dirac Fermions

scholarly journals Bi2Te3 Topological Insulator for Domain-Wall Dark Pulse Generation from Thulium-Doped Fiber Laser

Crystals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 337 ◽  
Author(s):  
Joonhoi Koo ◽  
Nandam Ashok ◽  
Dong Hwan Kim ◽  
Woojin Shin
Keyword(s):  
Pump Power ◽  
Domain Wall ◽  
Fiber Laser ◽  
Topological Insulator ◽  
Repetition Rate ◽  
Pulse Width ◽  
Laser Cavity ◽  
Pulse Generation ◽  
Distilled Water ◽  
Dark Pulse

We have experimentally demonstrated domain-wall (DW) dark pulses from a thulium-doped fiber laser incorporating a topological insulator saturable absorber (SA). The bulk-structured Bi2Te3 was used as the SA, which was constructed on a fiber ferrule platform through the deposition of the Bi2Te3 mixed with distilled water. The DW dark pulses were generated from the thulium-doped fiber laser cavity with a dual wavelength at 1956 nm and 1958 nm. The dark pulse width and the repetition rate were measured as ~10.3 ns and ~20.7 MHz over the pump power of ~80 mW, respectively. To the best of our knowledge, this work is the first demonstrated generation of the DW dark pulse from a thulium-doped fiber laser using nanomaterial-based SA.

scholarly journals Magnetotransport of Dirac fermions on the surface of a topological insulator

2010 ◽  
Vol 82 (4) ◽  
Author(s):  
S. Mondal ◽  
D. Sen ◽  
K. Sengupta ◽  
R. Shankar
Keyword(s):  
Topological Insulator ◽  
Dirac Fermions

scholarly journals Massive Dirac fermions and spin physics in an ultrathin film of topological insulator

2010 ◽  
Vol 81 (11) ◽  
Author(s):  
Hai-Zhou Lu ◽  
Wen-Yu Shan ◽  
Wang Yao ◽  
Qian Niu ◽  
Shun-Qing Shen
Keyword(s):  
Topological Insulator ◽  
Ultrathin Film ◽  
Dirac Fermions ◽  
Spin Physics

scholarly journals Electron–Hole Scattering Limited Transport of Dirac Fermions in a Topological Insulator

Nano Letters ◽  
2021 ◽  
Author(s):  
Valentin L. Müller ◽  
Yuan Yan ◽  
Oleksiy Kashuba ◽  
Björn Trauzettel ◽  
Mohamed Abdelghany ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Dirac Fermions ◽  
Electron Hole

Spin Ordering on the Surface of a Topological Insulator with Magnetic Ions

2012 ◽  
Vol 190 ◽  
pp. 494-497
Author(s):  
V.N. Men'shov ◽  
V.V. Tugushev ◽  
E.V. Chulkov
Keyword(s):  
Topological Insulator ◽  
Chemical Potential ◽  
Mean Field ◽  
Three Dimensional ◽  
Surface States ◽  
Dirac Fermions ◽  
Uniform Magnetization ◽  
Out Of Plane ◽  
Different Temperatures ◽  
Magnetic Ions

We study the effect of magnetic doping on appearance of ferromagnetic (FM) order on the surface of a three-dimensional topological insulator. Assuming the exchange coupling of the Dirac fermions with the dilute magnetic ions, we find that the system under consideration is unstable with respect to a spontaneous uniform magnetization along the out-of-plane direction. The appearance of the magnetization is accompanied by opening of a gap in the spectrum of surface states. In the framework of a mean-field approach, we analyze the possibility of the FM order on the magnetically doped surface of topological insulator at different temperatures and positions of the chemical potential.

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