scholarly journals Nonvolatile ferroelectric control of topological states in two-dimensional heterostructures

2020 ◽  
Vol 102 (23) ◽  
Author(s):  
Hua Bai ◽  
Xinwei Wang ◽  
Weikang Wu ◽  
Pimo He ◽  
Zhu'an Xu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Topological States

Two-dimensional superconductivity and topological states in PdTe2 thin films

2018 ◽  
Vol 2 (9) ◽  
Author(s):  
Chong Liu ◽  
Chao-Sheng Lian ◽  
Meng-Han Liao ◽  
Yang Wang ◽  
Yong Zhong ◽  
...  
Keyword(s):  
Thin Films ◽  
Two Dimensional ◽  
Topological States

scholarly journals Coupling effect of topological states and Chern insulators in two-dimensional triangular lattices

2018 ◽  
Vol 97 (12) ◽  
Author(s):  
Jiayong Zhang ◽  
Bao Zhao ◽  
Yang Xue ◽  
Tong Zhou ◽  
Zhongqin Yang
Keyword(s):  
Coupling Effect ◽  
Two Dimensional ◽  
Topological States ◽  
Chern Insulators ◽  
Triangular Lattices

scholarly journals Competing magnetic orderings and tunable topological states in two-dimensional hexagonal organometallic lattices

2016 ◽  
Vol 93 (4) ◽  
Author(s):  
Hyun-Jung Kim ◽  
Chaokai Li ◽  
Ji Feng ◽  
Jun-Hyung Cho ◽  
Zhenyu Zhang
Keyword(s):  
Two Dimensional ◽  
Topological States

scholarly journals Exotic fractional topological states in a two-dimensional organometallic material

2014 ◽  
Vol 89 (12) ◽  
Author(s):  
Wei Li ◽  
Zheng Liu ◽  
Yong-Shi Wu ◽  
Yan Chen
Keyword(s):  
Two Dimensional ◽  
Topological States

Novel topological states of nodal points and nodal rings in 2D planar octagon TiB4

Nanoscale ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 3194-3200
Author(s):  
Weizhen Meng ◽  
Wei Liu ◽  
Xiaoming Zhang ◽  
Ying Liu ◽  
Xuefang Dai ◽  
...  
Keyword(s):  
2D Materials ◽  
Topological States Of Matter ◽  
Two Dimensional ◽  
Nodal Points ◽  
Potential Applications ◽  
Topological States

Topological states of matter in two-dimensional (2D) materials have received increasing attention due to their potential applications in nanoscale spintronics.

New topological states in HgTe quantum wells from defect patterning

Nanoscale ◽  
2018 ◽  
Vol 10 (33) ◽  
pp. 15462-15467
Author(s):  
Hua-Hua Fu ◽  
Ruqian Wu
Keyword(s):  
Quantum Wells ◽  
2D Materials ◽  
Quantum Spin ◽  
Two Dimensional ◽  
New Methods ◽  
Topological States ◽  
Quantum Spin Hall

To explore new methods for the realization of the quantum spin Hall (QSH) effect in two-dimensional (2D) materials, we have constructed a honeycomb geometry (HG) by etching rows of hexagonal holes in HgTe quantum wells (QWs).

scholarly journals Topological states in two-dimensional optical lattices

2010 ◽  
Vol 82 (1) ◽  
Author(s):  
Tudor D. Stanescu ◽  
Victor Galitski ◽  
S. Das Sarma
Keyword(s):  
Optical Lattices ◽  
Two Dimensional ◽  
Topological States

scholarly journals Twisted bulk-boundary correspondence of fragile topology

Science ◽  
2020 ◽  
Vol 367 (6479) ◽  
pp. 794-797 ◽  
Author(s):  
Zhi-Da Song ◽  
Luis Elcoro ◽  
B. Andrei Bernevig
Keyword(s):  
Boundary Conditions ◽  
Topological Insulator ◽  
Experimental Verification ◽  
Real Space ◽  
Two Dimensional ◽  
Edge States ◽  
Quantum Numbers ◽  
Boundary Correspondence ◽  
Topological States ◽  
Twisted Boundary Conditions

A topological insulator reveals its nontrivial bulk through the presence of gapless edge states: This is called the bulk-boundary correspondence. However, the recent discovery of “fragile” topological states with no gapless edges casts doubt on this concept. We propose a generalization of the bulk-boundary correspondence: a transformation under which the gap between the fragile phase and other bands must close. We derive specific twisted boundary conditions (TBCs) that can detect all the two-dimensional eigenvalue fragile phases. We develop the concept of real-space invariants, local good quantum numbers in real space, which fully characterize these phases and determine the number of gap closings under the TBCs. Realizations of the TBCs in metamaterials are proposed, thereby providing a route to their experimental verification.

Higher-Order Topological States in the Extended Two-Dimensional SSH Model and Their Electric Circuit Implementation

2021 ◽  
Author(s):  
Nikita A. Olekhno ◽  
Alina D. Rozenblit ◽  
Valerii I. Kachin ◽  
Oleg I. Burmistrov ◽  
Alexey A. Dmitriev ◽  
...  
Keyword(s):  
Electric Circuit ◽  
Higher Order ◽  
Two Dimensional ◽  
Circuit Implementation ◽  
Topological States ◽  
Ssh Model
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