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Title: Experimental observation of drumhead surface states in SrAs3

Journal Article · · Scientific Reports
 [1];  [1];  [2]; ORCiD logo [3];  [1];  [1];  [1];  [1]; ORCiD logo [3];  [4];  [2];  [1]
  1. Univ. of Central Florida, Orlando, FL (United States)
  2. Northeastern Univ., Boston, MA (United States)
  3. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  4. Polish Academy of Sciences (PAS), Wroclaw (Poland). Inst. of Low Temperature and Structure Research; Polish Academy of Sciences (PAS), Poznań (Poland). Inst. of Molecular Physics

The topological nodal-line semimetal (TNS) is a unique class of material with a one dimensional line node accompanied by a nearly dispersionless two-dimensional sur- face state. However, a direct observation of the so called drumhead surface state within current nodal-line materials is still elusive. Here, using high-resolution angle- resolved photoemission spectroscopy (ARPES) along with first-principles calculations, we report the observation of a topological nodal-loop (TNL) in SrAs3, whereas CaAs3 exhibits topologically trivial state. Our data reveal that surface projections of the bulk nodal-points are connected by clear drumhead surface states in SrAs3. Furthermore, our magneto-transport and magnetization data clearly suggest the presence (absence) of surface state in SrAs3 (CaAs3). Notably, the observed topological states in RAs3 (R = Ca, Sr) are well separated from other bands in the vicinity of the Fermi level. RAs3, thus, offers a unique opportunity to realize an archetype nodal-loop semimetal and establish a platform for gaining a deeper understanding of the quantum phase transitions.

Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
DOE office of science, Early Career Program; INL LDRD
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1616026
Report Number(s):
INL/JOU-19-55600-Rev000; TRN: US2106397
Journal Information:
Scientific Reports, Vol. 10, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Ionic liquid gating control of RKKY interaction in FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2 multilayers journal March 2018
Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe2 journal September 2018
Author Correction: Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions journal October 2018
Giant Magnetic Band Gap in the Rashba-Split Surface State of Vanadium-Doped BiTeI: A Combined Photoemission and Ab Initio Study journal June 2017
Unconventional band inversion and intrinsic quantum spin Hall effect in functionalized group-V binary films journal July 2017
Electronic structure and topological properties of centrosymmetric MoAs2/WAs2 from first principles journal September 2017
Spin valley and giant quantum spin Hall gap of hydrofluorinated bismuth nanosheet journal May 2018
Quantum transport simulations of graphene nanoribbon devices using Dirac equation calibrated with tight-binding π-bond model journal February 2012
Quantum Enhancement of a S/D Tunneling Model in a 2D MS-EMC Nanodevice Simulator: NEGF Comparison and Impact of Effective Mass Variation journal February 2020
Zigzag phosphorene nanoribbons: one-dimensional resonant channels in two-dimensional atomic crystals journal December 2016
Nonsymmorphic symmetry protected node-line semimetal in the trigonal YH3 text January 2017
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Figures / Tables (5)