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Title: Controlling the Topological Sector of Magnetic Solitons in Exfoliated Cr 1 / 3 NbS 2 Crystals

Here, we investigate manifestations of topological order in monoaxial helimagnet Cr 1/3NbS 2 by performing transport measurements on ultrathin crystals. Upon sweeping the magnetic field perpendicularly to the helical axis, crystals thicker than one helix pitch (48 nm) but much thinner than the magnetic domain size (similar to 1 mu m) are found to exhibit sharp and hysteretic resistance jumps. We also show that these phenomena originate from transitions between topological sectors with a different number of magnetic solitons. This is confirmed by measurements on crystals thinner than 48 nm-in which the topological sector cannot change-that do not exhibit any jump or hysteresis. These results show the ability to deterministically control the topological sector of finite-size Cr 1/3NbS 2 and to detect intersector transitions by transport measurements.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ORCiD logo [5] ; ORCiD logo [5] ;  [6] ;  [7] ;  [2] ;  [8] ;  [9] ;  [3]
  1. Univ. of Geneva (Switzerland). Dept. of Quantum Matter Physics and Group of Applied Physics; Nanjing Tech Univ. (China). Key Lab. of Flexible Electronics (KLOFE) and Inst. of Advanced Materials (IAM)
  2. Ecole Polytechnique Federale Lausanne (Switzlerland). Inst. of Physics
  3. Univ. of Geneva (Switzerland). Dept. of Quantum Matter Physics and Group of Applied Physics
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division T-4 and CNLS
  6. Univ. of Tokyo (Japan). Dept. of Applied Physics
  7. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science
  8. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  9. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering and Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Publication Date:
Report Number(s):
LA-UR-17-22951
Journal ID: ISSN 0031-9007; PRLTAO; 136180; TRN: US1702788
Grant/Contract Number:
AC02-06CH11357; DMR-1410428; AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 25; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Swiss National Science Foundation (SNSF); National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Material Science
OSTI Identifier:
1407886
Alternate Identifier(s):
OSTI ID: 1366340; OSTI ID: 1374539