Results 61 to 70 of about 5,529 (134)

Topological insulators [PDF]

MRS Bulletin, 2014
Abstract
Felser, C., Qi, X.
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Topological Insulators [PDF]

, 2013
The recent discovery of a new class of materials, the so-called topological insulators [1–5]. has generated a great interest in the fields of condensed matter physics and materials science [1]. In principle, according to their band structure, compounds can be divided into metals and insulators.
Müchler, L., Yan, B., Casper, F., Chadov, S., Felser, C.   +4 more
  +5 more sources

Acoustic transport in higher-order topological insulators with Dirac hierarchy

New Journal of Physics, 2023
Dirac cones (DCs) are an important band structure in topological insulators (TIs) for realizing topological phase transition, and they provide unique ways to artificially regulate wave transport.
Xinglong Yu, Xin Zhang, Li Luo, Licheng Wang, Jiebin Peng, Yingyi Huang, Yuan Guo, Jing Cai, Yanping Wang, Degang Zhao, Yuanwei Yao, Fugen Wu   +11 more
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Third-order topological insulators with wallpaper fermions in Tl4PbTe3 and Tl4SnTe3

npj Computational Materials, 2022
Nonsymmorphic symmetries open up horizons of exotic topological boundary states and even generalize the bulk–boundary correspondence, which, however, the third-order topological insulator in electronic materials are still unknown.
Ning Mao, Hao Wang, Ying Dai, Baibiao Huang, Chengwang Niu   +4 more
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Photonic Topological Insulators

Nonlinear Optics, 2013
Photonic systems are naturally an excellent avenue to study fundamental concepts of waves' interactions, and many times lead to new discoveries. In this context, the recent breakthroughs on photonic topological insulators will be discussed, with an emphasis on fundamental aspects that are universal to many waves systems in nature.
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Classification and Prediction of Topological Insulators by Using the Density of States

Mathematics
In order to characterize topological insulators it is customary to use representations of the electronic structure, such as the band structure, where the energy of electrons is represented as a function of their momenta.
Alejandro Díaz-Nadales, Zulima Fernández-Muñiz, Juan L. Fernández-Martínez, Víctor M. García-Suárez   +3 more
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Discovery of higher-order topological insulators using the spin Hall conductivity as a topology signature

npj Computational Materials, 2021
The discovery and realization of topological insulators, a phase of matter which hosts metallic boundary states when the d-dimension insulating bulk is confined to (d − 1)-dimensions, led to several potential applications.
Marcio Costa, Gabriel R. Schleder, Carlos Mera Acosta, Antonio C. M. Padilha, Frank Cerasoli, Marco Buongiorno Nardelli, Adalberto Fazzio   +6 more
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A new class of (2 + 1)-dimensional topological superconductors with topological classification

New Journal of Physics, 2013
The classification of topological states of matter depends on spatial dimension and symmetry class. For non-interacting topological insulators and superconductors, the topological classification is obtained systematically and non-trivial topological ...
Xiao-Liang Qi
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Broadband acoustic pseudospin topological states based on the reverse spin-orbit coupling in generalized insulators

Frontiers in Materials
Acoustic topological insulators have the excellent characteristic of the pseudospin-dependent one-way transmission of sound edge states immune to backscattering.
Chongrui Liu, Yibing Lu, Zhenxin He, Wenliang Guan, Zhen Huang   +4 more
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Extended topological group structure due to average reflection symmetry

New Journal of Physics, 2015
We extend the single-particle topological classification of insulators and superconductors to include systems in which disorder preserves average reflection symmetry.
M Diez, D I Pikulin, I C Fulga, J Tworzydło   +3 more
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