Entanglement entropy and entanglement spectrum of Bi1-x Sb x (1 1 1) bilayers.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
Marta BrzezińskaArkadiusz Wójs

Abstract

We study topological properties of Bi1-x Sb x bilayers in the (1 1 1) plane using entanglement measures. Electronic structures are investigated within multi-orbital tight-binding model and structural stability is confirmed through first-principles calculations. The topologically non-trivial nature of the bismuth bilayer is proved by the presence of spectral flow in the entanglement spectrum. We consider topological phase transitions driven by a composition change x, an applied external electric field in Bi bilayers and strain in Sb bilayers. Composition- and strain-induced phase transitions reveal a finite discontinuity in the entanglement entropy. This quantity remains a continuous function of the electric field strength, but shows a finite discontinuity in the first derivative. We relate the difference in behavior of the entanglement entropy to the breaking of inversion symmetry in the last case.

References

Jul 15, 1995·Physical Review. B, Condensed Matter·Y Liu, R E Allen
Oct 26, 2005·Physical Review Letters·C L Kane, E J Mele
Dec 31, 2005·Physical Review Letters·C L Kane, E J Mele
Apr 12, 2006·Physical Review Letters·Dimitri Gioev, Israel Klich
Apr 12, 2006·Physical Review Letters·B Andrei Bernevig, Shou-Cheng Zhang
Dec 16, 2006·Science·B Andrei BernevigShou-Cheng Zhang
Feb 7, 2007·Physical Review Letters·Shuichi Murakami
Jul 23, 2008·Physical Review Letters·Chaoxing LiuShou-Cheng Zhang
May 21, 2010·Physical Review Letters·Lukasz Fidkowski
Sep 28, 2010·Physical Review Letters·Emil ProdanB Andrei Bernevig
Nov 24, 2011·Physical Review Letters·Toru HiraharaShuji Hasegawa
Oct 2, 2012·Nature Materials·P DziawaT Story
Oct 4, 2012·Physical Review Letters·Fang YangJin-Feng Jia
Aug 26, 2014·Physical Review Letters·Anushya ChandranS L Sondhi
Jan 25, 2013·Physical Review Letters·Ian Mondragon-ShemTaylor L Hughes
Oct 3, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·T P OliveiraP D Sacramento
Feb 13, 2015·Scientific Reports·Kyung-Hwan Jin, Seung-Hoon Jhi
Aug 8, 2015·Nano Letters·P Potasz, J Fernández-Rossier
Aug 22, 2015·Nanoscale Research Letters·Hui Pan, Xue-Sen Wang
Feb 7, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Maciej BieniekPaweł Potasz

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Journal of Physics. Condensed Matter : an Institute of Physics Journal
Marta BrzezińskaArkadiusz Wójs
Soins. Gynécologie, obstétrique, puériculture, pédiatrie
M Darde
Journal of Physics. Condensed Matter : an Institute of Physics Journal
T P OliveiraP D Sacramento
© 2022 Meta ULC. All rights reserved