Results 1 to 10 of about 45,930 (178)

Exceptional topological insulators [PDF]

Nature Communications, 2021
Three-dimensional topological insulators have become a research focal point on topological quantum matter. Here, the authors propose the non-Hermitian analogue, the exceptional topological insulator, with anomalous surface states only existing within the
M. Michael Denner, Anastasiia Skurativska, Frank Schindler, Mark H. Fischer, Ronny Thomale, Tomáš Bzdušek, Titus Neupert   +6 more
doaj   +9 more sources

Interacting Topological Insulators with Synthetic Dimensions

Physical Review X, 2018
Recent developments of experimental techniques have given us unprecedented opportunities of studying topological insulators in high dimensions, while some of the dimensions are “synthetic,” in the sense that the effective lattice momenta along these ...
Chao-Ming Jian, Cenke Xu
doaj   +2 more sources

Fractal photonic anomalous Floquet topological insulators to generate multiple quantum chiral edge states [PDF]

Light: Science & Applications, 2023
Anomalous Floquet topological insulators with vanishing Chern numbers but supporting chiral edge modes are attracting more and more attention. Since the existing anomalous Floquet topological insulators usually support only one kind of chiral edge mode ...
Meng Li, Chu Li, Linyu Yan, Qiang Li, Qihuang Gong, Yan Li   +5 more
doaj   +2 more sources

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.
Cha, Judy J., Shen, Jie
core   +3 more sources

Topological Crystalline Insulators

Physical Review Letters, 2011
The recent discovery of topological insulators has revived interest in the topological properties of insulating band structures. In this work, we extend the topological classification of insulating band structures to include certain point group symmetry ...
Fu, Liang
core   +4 more sources

Higher-Order Topological Insulators [PDF]

Science Advances, 2018
Three-dimensional topological (crystalline) insulators are materials with an insulating bulk, but conducting surface states which are topologically protected by time-reversal (or spatial) symmetries.
Bernevig, B. Andrei, Cook, Ashley M., Neupert, Titus, Parkin, Stuart S. P., Schindler, Frank, Vergniory, Maia G., Wang, Zhijun   +6 more
core   +12 more sources

Statistical Topological Insulators [PDF]

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.
Akhmerov, A. R., Edge, J. M., Fulga, I. C., van Heck, B.   +3 more
core   +6 more sources

Photonic non-Abelian topological insulators with six bands [PDF]

Nature Communications
Non-Abelian topological insulators are multi-band systems, satisfying parity-time symmetry, characterized by fully gapped bands and whose topological charges are non-Abelian quaternions.
Tianshu Jiang, Zhen-Nan Tian, Ran Tao, Ruo-Yang Zhang, Chenyu Zhang, Qi-Dai Chen, Zhanshan Wang, Xinbin Cheng, C. T. Chan, Xu-Lin Zhang   +9 more
doaj   +2 more sources

Bound states at partial dislocation defects in multipole higher-order topological insulators [PDF]

Nature Communications, 2022
The development of higher-order topological insulators enables robust localization of energy at lower-dimensional boundaries. Here the authors demonstrate that partial dislocation in higher order topological insulators can be intuitively understood as a ...
Sasha S. Yamada, Tianhe Li, Mao Lin, Christopher W. Peterson, Taylor L. Hughes, Gaurav Bahl   +5 more
doaj   +2 more sources

Fractionalized Topological Insulators [PDF]

Nature Physics, 2015
Topological insulators have emerged as a major topic of condensed matter physics research with several novel applications proposed. Although there are now a number of established experimental examples of materials in this class, all of them can be ...
Fiete, Gregory A., Maciejko, Joseph
core   +2 more sources