Experimental Realization of a Quaternary Bi-Chalcogenide Topological Insulator with Smaller Effective Mass

2019 ◽  
Vol 123 (23) ◽  
pp. 14398-14403 ◽  
Author(s):  
Pedro H. R. Goncalves ◽  
Luan Calil ◽  
Igor Antoniazzi ◽  
Thais Chagas ◽  
Ângelo Malachias ◽  
...  
Keyword(s):  
Effective Mass ◽  
Topological Insulator ◽  
Experimental Realization

scholarly journals Four-band non-Abelian topological insulator and its experimental realization

2021 ◽  
Author(s):  
Qinghua Guo ◽  
Tianshu Jiang ◽  
Ruoyang Zhang ◽  
Zhaoqing Zhang ◽  
Biao Yang ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Experimental Realization

scholarly journals Experimental Realization of an Intrinsic Magnetic Topological Insulator*

2019 ◽  
Vol 36 (7) ◽  
pp. 076801 ◽  
Author(s):  
Yan Gong ◽  
Jingwen Guo ◽  
Jiaheng Li ◽  
Kejing Zhu ◽  
Menghan Liao ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Experimental Realization

Experimental Realization of Magnetic-Free Topological Insulator Laser

2018 ◽  
Author(s):  
Mordechai Segev ◽  
Miguel A. Bandres ◽  
Gal Harari ◽  
Steffen Wittek ◽  
Demetrios N. Christodoulides ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Experimental Realization

Towards the Experimental Realization of the Topological Insulator Laser

2017 ◽  
Author(s):  
S. Wittek ◽  
G. Harari ◽  
M. A. Bandres ◽  
H. Hodaei ◽  
M. Parto ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Experimental Realization

scholarly journals Experimental realization of photonic topological insulator in a uniaxial metacrystal waveguide

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Wen-Jie Chen ◽  
Shao-Ji Jiang ◽  
Xiao-Dong Chen ◽  
Baocheng Zhu ◽  
Lei Zhou ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Experimental Realization

scholarly journals Experimental Realization of a Three-Dimensional Topological Insulator Phase in Ternary ChalcogenideTlBiSe2

2010 ◽  
Vol 105 (14) ◽  
Author(s):  
K. Kuroda ◽  
M. Ye ◽  
A. Kimura ◽  
S. V. Eremeev ◽  
E. E. Krasovskii ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Three Dimensional ◽  
Experimental Realization

scholarly journals Weak topological insulating phases of hard-core-bosons on the honeycomb lattice

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Amrita Ghosh ◽  
Eytan Grosfeld
Keyword(s):  
Topological Insulator ◽  
Quantum Monte Carlo ◽  
Nearest Neighbor ◽  
Berry Phase ◽  
Density Wave ◽  
Hard Core ◽  
Honeycomb Lattice ◽  
Experimental Realization ◽  
A Charge ◽  
Quantum Monte Carlo Simulations

We study the phases of hard-core bosons on a two-dimensional periodic honeycomb lattice in the presence of an on-site potential with alternating sign along the different y-layers of the lattice. Using quantum Monte Carlo simulations supported by analytical calculations, we identify a weak topological insulator, characterized by a zero Chern number but non-zero Berry phase, which is manifested at either density 1/4 or 3/4, as determined by the potential pattern. Additionally, a charge-density-wave insulator is observed at 1/2-filling, whereas the phase diagram at intermediate densities is occupied by a superfluid phase. The weak topological insulator is further shown to be robust against any amount of nearest-neighbor repulsion, as well as weak next-nearest-neighbor repulsion. The experimental realization of our model is feasible in an optical lattice setup.

scholarly journals Emergent Helical Edge States in a Hybridized Three-Dimensional Topological Insulator

2021 ◽  
Author(s):  
Su Kong Chong ◽  
Lizhe Liu ◽  
Kenji Watanabe ◽  
Takashi Taniguchi ◽  
Taylor Sparks ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Quantum Tunneling ◽  
Three Dimensional ◽  
Quantum Spin ◽  
Topological Phase ◽  
Edge States ◽  
Experimental Realization ◽  
Transition Mechanism ◽  
Topological Quantum ◽  
Topological State

Abstract As the thickness of a three-dimensional (3D) topological insulator (TI) becomes comparable to the penetration depth of surface states, quantum tunneling between surfaces turns their gapless Dirac electronic structure into a gapped spectrum. Whether the surface hybridization gap can host topological edge states is still an open question. Herein, we provide transport evidence of 2D topological states in the quantum tunneling regime of a bulk insulating 3D TI BiSbTeSe2. Different from its trivial insulating phase, this 2D topological state exhibits a finite longitudinal conductance at ~2e2/h when the Fermi level is aligned within the surface gap, indicating an emergent quantum spin Hall (QSH) state. The transition from the QSH to quantum Hall (QH) state in a transverse magnetic field further supports the existence of this distinguished 2D topological phase. In addition, we demonstrate a second route to realize the 2D topological state via surface gap-closing and topological phase transition mechanism mediated by a transverse electric field. The experimental realization of the 2D topological phase in a 3D TI enriches its phase diagram and marks an important step toward functional topological quantum devices.

Erratum: Experimental Realization of an Intrinsic Magnetic Topological Insulator [Chin. Phys. Lett. 36 (2019) 076801]

2019 ◽  
Vol 36 (8) ◽  
pp. 089901 ◽  
Author(s):  
Yan Gong ◽  
Jingwen Guo ◽  
Jiaheng Li ◽  
Kejing Zhu ◽  
Menghan Liao ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Experimental Realization
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