Results 31 to 40 of about 45,930 (178)
Topological Mott Insulators [PDF]
Physical Review Letters, 2008 5 Pages, 4 ...
Raghu, S. +3 more
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Topological Anderson Insulator
Physical Review Letters, 2009 Disorder plays an important role in two dimensions, and is responsible for striking phenomena such as metal insulator transition and the integral and fractional quantum Hall effects. In this paper, we investigate the role of disorder in the context of the recently discovered topological insulator, which possesses a pair of helical edge states with ...
Chu, RL, Li, J, Shen, SQ, Jain, JK
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Bimorphic Floquet topological insulators
Nature Materials, 2022 Topological theories have established a new set of rules that govern the transport properties in a wide variety of wave-mechanical settings. In a marked departure from the established approaches that induce Floquet topological phases by specifically tailored discrete coupling protocols or helical lattice motions, we introduce a new class of bimorphic ...
Georgios G. Pyrialakos +7 more
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Topological Insulators by Topology Optimization [PDF]
Physical Review Letters, 2019 An acoustic topological insulator (TI) is synthesized using topology optimization, a free material inverse design method. The TI appears spontaneously from the optimization process without imposing requirements on the existence of pseudo spin-1/2 states at the TI interface edge, or the Chern number of the topological phases. The resulting TI is passive;
Christiansen, Rasmus E. +2 more
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Topological Hierarchy Insulators and Topological Fractal Insulators [PDF]
EPL (Europhysics Letters), 2015 Topological insulators are new states of quantum matter with metallic edge/surface states. In this paper, we pointed out that there exists a new type of particle-hole symmetry-protected topological insulator - topological hierarchy insulator (THI), a composite topological state of a (parent) topological insulator and its defect-induced topological mid ...
He, Jing +3 more
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Optoelectronic devices, plasmonics, and photonics with topological insulators
APL Materials, 2017 Topological insulators are innovative materials with semiconducting bulk together with surface states forming a Dirac cone, which ensure metallic conduction in the surface plane.
Antonio Politano +2 more
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Towards layer-selective quantum spin hall channels in weak topological insulator Bi4Br2I2
Nature Communications, 2023 Weak topological insulators, constructed by stacking quantum spin Hall insulators with weak interlayer coupling, offer promising quantum electronic applications through topologically non-trivial edge channels.
Jingyuan Zhong +12 more
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Simplified Topological Invariants for Interacting Insulators
Physical Review X, 2012 We propose general topological order parameters for interacting insulators in terms of the Green’s function at zero frequency. They provide a unified description of various interacting topological insulators including the quantum anomalous Hall ...
Zhong Wang, Shou-Cheng Zhang
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Topological phase transition in chiral graphene nanoribbons: from edge bands to end states
Nature Communications, 2021 Graphene nanoribbons are potential systems for engineering topological phases of matter, but the pre-required gapped phases are difficult to find. Here, the authors show that chiral graphene nanoribbons undergo a transition from metallic to topological ...
Jingcheng Li +9 more
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Photonic topological Anderson insulators [PDF]
Nature, 2018 20 pages, 4 ...
Stützer, Simon +7 more
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