Results 1 to 10 of about 5,529 (134)

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
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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
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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
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Hyperbolic photonic topological insulators [PDF]

Nature Communications
Topological photonics provides a new degree of freedom to robustly control electromagnetic fields. To date, most of established topological states in photonics have been employed in Euclidean space.
Lei Huang, Lu He, Weixuan Zhang, Huizhen Zhang, Dongning Liu, Xue Feng, Fang Liu, Kaiyu Cui, Yidong Huang, Wei Zhang, Xiangdong Zhang   +10 more
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Intrinsic magnetic topological insulators [PDF]

The Innovation, 2021
Introducing magnetism into topological insulators breaks time-reversal symmetry, and the magnetic exchange interaction can open a gap in the otherwise gapless topological surface states.
Pinyuan Wang, Jun Ge, Jiaheng Li, Yanzhao Liu, Yong Xu, Jian Wang   +5 more
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Visualization of spin-polarized surface resonances in Pb-based ternary topological insulators [PDF]

Scientific Reports
The formation of the topological surface state originates from bulk band inversion at the top of the valence band and the bottom of the conduction band.
Koichiro Yaji, Yuya Hattori, Shunsuke Yoshizawa, Shunsuke Tsuda, Fumio Komori, Youhei Yamaji, Yuto Fukushima, Kaishu Kawaguchi, Takeshi Kondo, Yuki Tokumoto, Keiichi Edagawa, Taichi Terashima   +11 more
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Dispersion properties of artifi cial topological insulators based on an infi nite double-periodic array of elliptical quartz elements [PDF]

Радиофизика и электроника, 2021
Subject and Purpose. Special features of all-dielectric electromagnetic analogues of topological insulators (TI) in the microwave range are considered, aiming at studying the influence of geometrical and constitutive parameters of TI elements on the ...
L.I. Ivzhenko, S.Yu. Polevoy, E.N. Odarenko, S.I. Tarapov   +3 more
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Topologically Localized Insulators

Physical Review Letters, 2022
We show that fully-localized, three-dimensional, time-reversal-symmetry-broken insulators do not belong to a single phase of matter but can realize topologically distinct phases that are labelled by integers. The phase transition occurs only when the system becomes conducting at some filling.
Lapierre, Bastien, Neupert, Titus, Trifunovic, Luka   +2 more
openaire   +4 more sources

Topological Insulator Metamaterials

Chemical Reviews, 2023
Confinement of electromagnetic fields at the subwavelength scale via metamaterial paradigms is an established method to engineer light-matter interaction in most common material systems, from insulators to semiconductors, from metals to superconductors.
Harish N. S. Krishnamoorthy, Alexander M. Dubrovkin, Giorgio Adamo, Cesare Soci   +3 more
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Fractional Topological Insulators [PDF]

Physical Review Letters, 2009
We analyze generalizations of two dimensional topological insulators which can be realized in interacting, time reversal invariant electron systems. These states, which we call fractional topological insulators, contain excitations with fractional charge and statistics in addition to protected edge modes.
Levin, Michael, Stern, Ady
openaire   +3 more sources