Novel Z(2) Topological Metals and Semimetals

Physical Review Letters
Y X Zhao, Ziqiang Wang

Abstract

We report two theoretical discoveries for Z(2) topological metals and semimetals. It is shown first that any dimensional Z(2) Fermi surface is topologically equivalent to a Fermi point. Then the famous conventional no-go theorem, which was merely proven before for Z Fermi points in a periodic system without any discrete symmetry, is generalized so that the total topological charge is zero for all cases. Most remarkably, we find and prove an unconventional strong no-go theorem: all Z(2) Fermi points have the same topological charge ν(Z(2))=1 or 0 for periodic systems. Moreover, we also establish all six topological types of Z(2) models for realistic physical dimensions.

References

Aug 11, 2005·Physical Review Letters·Petr Horava
Oct 27, 2011·Physical Review Letters·A A Burkov, Leon Balents
May 1, 2012·Physical Review Letters·S M YoungA M Rappe
Jul 26, 2014·Physical Review Letters·Sergey BorisenkoRobert J Cava
Jun 14, 2013·Physical Review Letters·Y X Zhao, Z D Wang
Sep 5, 2014·Nature Communications·Heidi S AlveyHashim M Al-Hashimi
Sep 16, 2014·Nature Communications·Bohm-Jung Yang, Naoto Nagaosa
Jun 6, 2015·Physical Review Letters·Y X Zhao, Z D Wang
Jun 13, 2015·Nature Communications·Shin-Ming HuangM Zahid Hasan

❮ Previous
Next ❯

Citations

Apr 30, 2016·Physical Review Letters·Y X ZhaoZ D Wang
Feb 18, 2017·Physical Review Letters·Y X Zhao, Y Lu
Aug 2, 2020·Scientific Reports·M Mofazzel HosenMadhab Neupane
Nov 25, 2020·The Journal of Physical Chemistry Letters·Lu TianGuodong Liu

❮ 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.