Results 1 to 10 of about 52,956 (160)

Hinge solitons in three-dimensional second-order topological insulators

New Journal of Physics, 2020
Higher-order topological insulators have recently witnessed rapid progress in various fields ranging from condensed matter physics to electric circuits.
Yu-Liang Tao, Ning Dai, Yan-Bin Yang, Qi-Bo Zeng, Yong Xu   +4 more
doaj   +2 more sources

Topological Anderson Insulator

Physical Review Letters, 2008
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.
Chu, Rui-Lin, Jain, J. K., Li, Jian, Shen, Shun-Qing   +3 more
core   +5 more sources

Mapping rules from nodal line semimetal to topological crystalline insulator in face centered cubic lattice

Physical Review Research, 2020
We study what kind of topological crystalline insulator phase emerges from nodal line semimetal phases in the face centered cubic system, which is not indicated by topological indices when spin-orbit coupling (SOC) is introduced.
Ikuma Tateishi
doaj   +2 more sources

Measurement of a Topological Edge Invariant in a Microwave Network

Physical Review X, 2015
We report on the measurement of topological invariants in an electromagnetic topological insulator analog formed by a microwave network, consisting of the winding numbers of scattering matrix eigenvalues.
Wenchao Hu, Jason C. Pillay, Kan Wu, Michael Pasek, Perry Ping Shum, Y. D. Chong   +5 more
doaj   +3 more sources

Time-Reversal Symmetric U(1) Quantum Spin Liquids [PDF]

Physical Review X, 2016
We study possible quantum U(1) spin liquids in three dimensions with time-reversal symmetry. We find a total of seven families of such U(1) spin liquids, distinguished by the properties of their emergent electric or magnetic charges.
Chong Wang, T. Senthil
doaj   +4 more sources

Impact of barrier width on topological insulator phase in InN/InGaN quantum wells with moderate strain [PDF]

Scientific Reports
We present a theoretical study demonstrating that in InN/InGaN quantum wells, the topological insulator phase depends largely not only on the quantum well width, but also on the width of the barriers. We show that for structures with a large width of the
S. P. Łepkowski
doaj   +2 more sources

Topological-insulator nanocylinders

SciPost Physics Core, 2023
Nanostructures, such a quantum dots or nanoparticles, made of three-dimensional topological insulators (3DTIs) have been recently attracting increasing interest, especially for their optical properties. In this paper we calculate the energy spectrum, the
Michele Governale, Fabio Taddei
doaj   +5 more sources

Realization of a one-dimensional topological insulator in ultrathin germanene nanoribbons [PDF]

Nature Communications
Realizing a one-dimensional (1D) topological insulator and identifying the lower-dimensional limit of two-dimensional (2D) behavior are crucial steps toward developing high-density quantum state networks, advancing topological quantum computing, and ...
Dennis J. Klaassen, Lumen Eek, Alexander N. Rudenko, Esra D. van ’t Westende, Carolien Castenmiller, Zhiguo Zhang, Paul L. de Boeij, Arie van Houselt, Motohiko Ezawa, Harold J. W. Zandvliet, Cristiane Morais Smith, Pantelis Bampoulis   +11 more
doaj   +2 more sources

Topological dipole insulator

SciPost Physics
We expand the concept of two-dimensional topological insulators to encompass a novel category known as topological dipole insulators (TDIs), characterized by conserved dipole moments along the $x$-direction in addition to charge conservation.
Ho Tat Lam, Jung Hoon Han, Yizhi You
doaj   +3 more sources

Exceptional topological insulators [PDF]

Nature Communications, 2021
AbstractWe introduce the exceptional topological insulator (ETI), a non-Hermitian topological state of matter that features exotic non-Hermitian surface states which can only exist within the three-dimensional topological bulk embedding. We show how this phase can evolve from a Weyl semimetal or Hermitian three-dimensional topological insulator close ...
Denner, M Michael, Skurativska, Anastasiia, Schindler, Frank, Fischer, Mark H, Thomale, Ronny, Bzdušek, Tomáš, Neupert, Titus   +6 more
openaire   +7 more sources