Filling-Enforced Magnetic Dirac Semimetals in Two Dimensions

Physical Review Letters
Steve M Young, Benjamin J Wieder

Abstract

Filling-enforced Dirac semimetals, or those required at specific fillings by the combination of crystalline and time-reversal symmetries, have been proposed in numerous materials. However, Dirac points in these materials are not generally robust against breaking or modifying time-reversal symmetry. We present a new class of two-dimensional Dirac semimetal protected by the combination of crystal symmetries and a special, antiferromagnetic time-reversal symmetry. Systems in this class of magnetic layer groups, while having broken time-reversal symmetry, still respect the operation of time-reversal followed by a half-lattice translation. In contrast to 2D time-reversal-symmetric Dirac semimetal phases, this magnetic Dirac phase is capable of hosting just a single isolated Dirac point at the Fermi level, one that can be stabilized solely by symmorphic crystal symmetries. We find that this Dirac point represents a new quantum critical point, existing at the boundary between Chern insulating, antiferromagnetic topological crystalline insulating, and trivial insulating phases, and we discuss its relationship with condensed matter fermion doubling theorems. We present density functional theoretic calculations which demonstrate the pres...Continue Reading

References

Jan 15, 1990·Physical Review. B, Condensed Matter·A M RappeJ D Joannopoulos
Oct 26, 2005·Physical Review Letters·C L Kane, E J Mele
Nov 11, 2005·Nature·K S NovoselovA A Firsov
Dec 31, 2005·Physical Review Letters·C L Kane, E J Mele
Mar 18, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Yong-Feng LiBang-Gui Liu
Oct 27, 2011·Physical Review Letters·A A Burkov, Leon Balents
May 1, 2012·Physical Review Letters·S M YoungA M Rappe
May 27, 2014·Nature Materials·Z K LiuY L Chen
Jul 26, 2014·Physical Review Letters·Sergey BorisenkoRobert J Cava
Nov 25, 2014·Nature Materials·Jian-Feng GeJin-Feng Jia
Oct 3, 2015·Physical Review Letters·Steve M Young, Charles L Kane
Nov 26, 2015·Proceedings of the National Academy of Sciences of the United States of America·Haruki WatanabeMichael Zaletel
Nov 27, 2015·Nature·Alexey A SoluyanovB Andrei Bernevig
May 21, 2016·Physical Review Letters·Benjamin J WiederC L Kane
Aug 20, 2016·Physical Review Letters·G AutèsO V Yazyev

❮ Previous
Next ❯

Citations

Dec 9, 2017·Physical Review Letters·Guoqing ChangM Zahid Hasan
Dec 30, 2017·Physical Review Letters·Kangkang LiChen Fang
Dec 5, 2017·Nanoscale·Vladimir DamljanovićRadoš Gajić
Aug 8, 2018·Science Advances·Haruki WatanabeAshvin Vishwanath
Jul 31, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Vladimir DamljanovicMilan Damnjanovic
Jul 22, 2018·Science·Benjamin J WiederB Andrei Bernevig
Feb 29, 2020·Physical Review Letters·Chengwang NiuYing Dai
Jul 20, 2019·Nature Communications·Chengwang NiuYuriy Mokrousov
Oct 15, 2021·Nature Communications·Luis ElcoroB Andrei Bernevig

❮ 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

Nature
Alexey A SoluyanovB Andrei Bernevig
Physical Review Letters
Steve M Young, C L Kane
Physical Review Letters
Benjamin J WiederC L Kane
Physical Review Letters
S M YoungAndrew M Rappe
© 2022 Meta ULC. All rights reserved