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

Journal Article · · Physical Review Letters
 [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
+ Show Author Affiliations

Here, we investigate manifestations of topological order in monoaxial helimagnet Cr1/3NbS2 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 Cr1/3NbS2 and to detect intersector transitions by transport measurements.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Swiss National Science Foundation (SNSF); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357; AC05-00OR22725
OSTI ID:
1374539
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 118; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Surface-size and shape dependencies of change in chiral soliton number in submillimeter-scale crystals of chiral magnet CrNb 3 S 6 journal July 2019
Spin-current diode with a monoaxial chiral magnet journal July 2019
Theory of standing spin waves in a finite-size chiral spin soliton lattice journal July 2019
Magnetic solitons and magnetic phase diagram of the hexagonal chiral crystal CrNb 3 S 6 in oblique magnetic fields journal November 2017
Geometrical protection of topological magnetic solitons in microprocessed chiral magnets journal January 2018
Intrinsic hysteresis due to the surface barrier for chiral solitons in monoaxial chiral helimagnets journal June 2018
Magnetic field dependence of nonlinear magnetic response and tricritical point in the monoaxial chiral helimagnet Cr 1 / 3 Nb S 2 journal June 2018
Anomalous Temperature Behavior of the Chiral Spin Helix in CrNb 3 S 6 Thin Lamellae journal January 2019
Spin-current diode with a monoaxial chiral magnet text January 2019

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Dzyaloshinskii-Moriya interaction
exchange interaction
magnetic order
magnetic phase transitions
magnetic texture
magnetism
magnetotransport
topological phases of matter