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Title: Missing magnetism in Sr 4Ru 3O 10: Indication for Antisymmetric Exchange Interaction

Metamagnetism occuring inside a ferromagnetic phase is peculiar. Therefore, Sr 4Ru 3O 10, a T C = 105 K ferromagnet, has attracted much attention in recent years, because it develops a pronounced metamagnetic anomaly below T C for magnetic fields applied in the crystallographic ab-plane. The metamagnetic transition moves to higher fields for lower temperatures and splits into a double anomaly at critical fields H c1 = 2.3 T and H c2 = 2.8 T, respectively. Here, we report a detailed study of the different components of the magnetization vector as a function of temperature, applied magnetic field, and varying angle in Sr 4Ru 3O 10. We discover for the first time a reduction of the magnetic moment in the plane of rotation at the metamagnetic transition. The anomaly shifts to higher fields by rotating the field from H ⊥ c to H || c. We compare our experimental findings with numerical simulations based on spin reorientation models taking into account magnetocrystalline anisotropy, Zeeman effect and antisymmetric exchange interactions. While Magnetocrystalline anisotropy combined with a Zeeman term are sufficient to explain a metamagnetic transition in Sr 4Ru 3O 10, a Dzyaloshinskii-Moriya term is crucial to account for the reduction ofmore » the magnetic moment as observed in the experiments.« less
ORCiD logo [1] ;  [2] ;  [2] ;  [2] ;  [3] ;  [4] ;  [4] ;  [5] ;  [5] ;  [5]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Texas, Dallas, TX (United States). Dept. of Physics
  4. Univ. of Johannesburg (South Africa). Dept. of Physics
  5. Univ. of Salerno, Fisciano (Italy). CNR-SPIN Inst. Sede Secondaria di Salerno
Publication Date:
Report Number(s):
Journal ID: ISSN 2045-2322
Grant/Contract Number:
AC52-06NA25396; DMR-1157490; 93549
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2045-2322
Nature Publishing Group
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); National Research Foundation (NRF) (South Africa)
Contributing Orgs:
Florida State Univ., Tallahassee, FL (United States); Univ. of Texas, Dallas, TX (United States); Univ. of Salerno, Fisciano (Italy)
Country of Publication:
United States
36 MATERIALS SCIENCE; magnetism, metamagnetis, strontium ruthenate
OSTI Identifier: