Tunable Weyl and Dirac states in the nonsymmorphic compound CeSbTe

Science Advances
Leslie M SchoopBettina V Lotsch

Abstract

Recent interest in topological semimetals has led to the proposal of many new topological phases that can be realized in real materials. Next to Dirac and Weyl systems, these include more exotic phases based on manifold band degeneracies in the bulk electronic structure. The exotic states in topological semimetals are usually protected by some sort of crystal symmetry, and the introduction of magnetic order can influence these states by breaking time-reversal symmetry. We show that we can realize a rich variety of different topological semimetal states in a single material, CeSbTe. This compound can exhibit different types of magnetic order that can be accessed easily by applying a small field. Therefore, it allows for tuning the electronic structure and can drive it through a manifold of topologically distinct phases, such as the first nonsymmorphic magnetic topological phase with an eightfold band crossing at a high-symmetry point. Our experimental results are backed by a full magnetic group theory analysis and ab initio calculations. This discovery introduces a realistic and promising platform for studying the interplay of magnetism and topology. We also show that we can generally expand the numbers of space groups that allo...Continue Reading

References

Feb 21, 2006·Acta Crystallographica. Section A, Foundations of Crystallography·Mois I AroyoHans Wondratschek
May 1, 2012·Physical Review Letters·S M YoungA M Rappe
Jul 26, 2014·Physical Review Letters·Sergey BorisenkoRobert J Cava
Oct 3, 2015·Physical Review Letters·Steve M Young, Charles L Kane
May 20, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Fabian von RohrAndreas Schilling
May 21, 2016·Physical Review Letters·Benjamin J WiederC L Kane
Jun 1, 2016·Nature Communications·Leslie M SchoopChristian R Ast
Oct 26, 2016·Nature Materials·Max HirschbergerN P Ong
Sep 10, 2016·Physical Review Letters·Haruki WatanabeAshvin Vishwanath
Oct 16, 2016·Physical Review Letters·Yan SunBinghai Yan
Dec 17, 2016·Physical Review Letters·Zhijun WangB Andrei Bernevig
Mar 25, 2017·Physical Review Letters·L ŠmejkalT Jungwirth
Aug 8, 2018·Science Advances·Haruki WatanabeAshvin Vishwanath

❮ Previous
Next ❯

Citations

May 28, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Baijiang LvZhu-An Xu
Apr 5, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Meng YangYouguo Shi
Feb 2, 2020·Nature Communications·Benjamin J WiederB Andrei Bernevig
Sep 7, 2018·Scientific Reports·M Mofazzel HosenMadhab Neupane
Dec 14, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Pok-Man ChiuTing-Kuo Lee
Jun 18, 2021·Advanced Materials·Shiming LeiLeslie M Schoop
Jun 19, 2021·Physical Review. B·M M PivaP G Pagliuso
Jun 25, 2021·Advanced Science·Kentaro YumigetaSefaattin Tongay
Mar 7, 2020·Journal of the American Chemical Society·Sebastian KlemenzLeslie M Schoop
Nov 8, 2019·Journal of the American Chemical Society·Jason F KhouryMercouri G Kanatzidis

❮ Previous
Next ❯

Methods Mentioned

BETA
AFM
neutron diffraction
x-ray diffraction
transmission electron microscopy
scanning electron microscopy
magnetic diffraction
neutron powder diffraction
scanning tunneling microscopy
electron diffraction

Software Mentioned

Vienna ab initio Simulation Package
PED
Bilbao Crystallographic Server

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.

© 2022 Meta ULC. All rights reserved