Results 61 to 70 of about 551,694 (368)

Topological crystalline insulator nanostructures [PDF]

Nanoscale, 2014
Topological crystalline insulators are topological insulators whose surface states are protected by the crystalline symmetry, instead of the time reversal symmetry.
Shen, Jie, Cha, Judy J.
openaire   +3 more sources

Photonic Floquet topological insulators [PDF]

SPIE Proceedings, 2013
21 pages, 5 ...
Mikael C. Rechtsman, Julia M. Zeuner, Yonatan Plotnik, Yaakov Lumer, Daniel Podolsky, Felix Dreisow, Stefan Nolte, Mordechai Segev, Alexander Szameit   +8 more
openaire   +3 more sources

Proximity-induced superconductivity in (Bi1−x Sb x )2Te3 topological-insulator nanowires

Communications Materials, 2022
Topological insulator nanowires are interesting because, in the presence of superconductivity, they may host elusive Majorana fermions. Here, superconductivity in (Bi1−x Sb x )2Te3 topological-insulator nanowires is realized by using palladium diffusion,
Mengmeng Bai, Xian-Kui Wei, Junya Feng, Martina Luysberg, Andrea Bliesener, Gertjan Lippertz, Anjana Uday, Alexey A. Taskin, Joachim Mayer, Yoichi Ando   +9 more
doaj   +1 more source

Intrinsic magnetic topological insulator phases in the Sb doped MnBi2Te4 bulks and thin flakes [PDF]

Nature Communications, 2019
Magnetic topological insulators (MTIs) offer a combination of topologically nontrivial characteristics and magnetic order and show promise in terms of potentially interesting physical phenomena such as the quantum anomalous Hall (QAH) effect and ...
Bo Chen, F. Fei, Dongqing Zhang, Bo Zhang, Wanling Liu, Shuai Zhang, Pengdong Wang, Boyuan Wei, Yong Zhang, Zewen Zuo, Jing-Kun Guo, Qianqian Liu, Zilu Wang, Xuchuan Wu, Junyu Zong, Xuedong Xie, Wang Chen, Zhe Sun, Shancai Wang, Yi Zhang, Minhao Zhang, Xuefeng Wang, F. Song, Haijun Zhang, D. Shen, Baigeng Wang   +25 more
semanticscholar   +1 more source

Statistical topological insulators

Physical Review B, 2014
We define a class of insulators with gapless surface states protected from localization due to the statistical properties of a disordered ensemble, namely due to the ensemble's invariance under a certain symmetry. We show that these insulators are topological, and are protected by a $\mathbb{Z}_2$ invariant.
I. C. Fulga, B. van Heck, J. M. Edge, and A. R. Akhmerov   +3 more
openaire   +4 more sources

Theoretical prediction of topological insulator in ternary rare earth chalcogenides

, 2010
A new class of three-dimensional topological insulator, ternary rare earth chalcogenides, is theoretically investigated with ab initio calculations. Based on both bulk band structure analysis and the direct calculation of topological surface states, we ...
Binghai Yan, Chao-Xing Liu, Hai-Jun Zhang, O. Madelung, O. Madelung, P. Rustamov, Shou-Cheng Zhang, Thomas Frauenheim, Xiao-Liang Qi   +8 more
core   +1 more source

Photonic amorphous topological insulator

Light: Science & Applications, 2020
The current understanding of topological insulators and their classical wave analogs, such as photonic topological insulators, is mainly based on topological band theory.
P. Zhou, Gui-Geng Liu, Xin Ren, Yihao Yang, Haoran Xue, L. Bi, L. Deng, Y. Chong, Baile Zhang   +8 more
semanticscholar   +1 more source

Demonstration of a quantized acoustic octupole topological insulator [PDF]

Nature Communications, 2019
Recently introduced quantized multipole topological insulators (QMTIs) reveal new types of gapped boundary states, which themselves represent lower-dimensional topological phases and host symmetry protected zero-dimensional corner states.
X. Ni, Mengyao Li, M. Weiner, A. Alú, A. Khanikaev   +4 more
semanticscholar   +1 more source

Topological quantum phase transition from mirror to time reversal symmetry protected topological insulator

Nature Communications, 2017
Transitions between topological phases of matter protected by different symmetries remain rare. Here, Mandal et al. report a quantum phase transition from a topological crystalline insulator to a Z2 topological insulator by doping Bi into Pb1-x Sn x Se ...
Partha S. Mandal, Gunther Springholz, Valentine V. Volobuev, Ondrej Caha, Andrei Varykhalov, Evangelos Golias, Günther Bauer, Oliver Rader, Jaime Sánchez-Barriga   +8 more
doaj   +1 more source

Chiral and helical states in selective-area epitaxial heterostructure

Communications Physics, 2023
The quasi-1D chiral edge states in a quantum anomalous Hall insulator are dissipationless, while the 2D helical surface states in a topological insulator are insensitive to spin-independent scatterings due to the topological protection.
Huimin Sun, Yu Huang, Mengyun He, Yu Fu, Sikang Zheng, Bin Zhang, Chen Wang, Qing Lin He   +7 more
doaj   +1 more source