Results 31 to 40 of about 5,529 (134)

Higher-order topological insulators [PDF]

open access: yesScience Advances, 2018
A new class of materials that are insulating in the bulk and on surfaces but have conducting hinge channels is studied.
Schindler, Frank   +6 more
openaire   +7 more sources

Simplified Topological Invariants for Interacting Insulators

open access: yesPhysical 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
doaj   +1 more source

Structural and topological phase transitions in Se doping-controlled intrinsic magnetic topological material FeBi2Te4

open access: yesNew Journal of Physics, 2023
Defects profoundly affect the magnetic, electronic structure and topological behaviour of intrinsic magnetic topological insulators. Here, we investigate the magnetic, structural stability and topological properties of different Te atomic sites in the ...
Wen-Ti Guo, Zhigao Huang, Jian-Min Zhang
doaj   +1 more source

Photonic topological Anderson insulators [PDF]

open access: yesNature, 2018
20 pages, 4 ...
Stützer, Simon   +7 more
openaire   +3 more sources

Topological Invariants and Ground-State Wave functions of Topological Insulators on a Torus

open access: yesPhysical Review X, 2014
We define topological invariants in terms of the ground-state wave functions on a torus. This approach leads to precisely defined formulas for the Hall conductance in four dimensions and the topological magnetoelectric θ term in three dimensions, and ...
Zhong Wang, Shou-Cheng Zhang
doaj   +1 more source

Plasmonics in Topological Insulators

open access: yesNanomaterials and Nanotechnology, 2014
With strong spin-orbit coupling, topological insulators have an insulating bulk state, characterized by a band gap, and a conducting surface state, characterized by a Dirac cone.
Yi-Ping Lai   +3 more
doaj   +1 more source

Interaction-driven Chern insulating phases in the α−T3 lattice with Rashba spin-orbit coupling

open access: yesiScience, 2023
Summary: The magnetic interaction is a necessary ingredient to break the time-reversal symmetry in realizing quantum anomalous Hall, or Chern insulating phases.
Shi-Qing Lin   +3 more
doaj   +1 more source

Topological crystalline insulator nanostructures [PDF]

open access: yesNanoscale, 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]

open access: yesSPIE Proceedings, 2013
21 pages, 5 ...
Mikael C. Rechtsman   +8 more
openaire   +3 more sources

Interaction-driven phase transition in one dimensional mirror-symmetry protected topological insulator

open access: yesSciPost Physics Core, 2022
Topological crystalline insulators are phases of matter where the crystalline symmetries solely protect the topology. In this work, we explore the effect of many-body interactions in a subclass of topological crystalline insulators, namely the mirror ...
Devendra Singh Bhakuni, Amrita Ghosh, Eytan Grosfeld
doaj   +1 more source

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