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Title: Dzyaloshinskii-Moriya interaction and the magnetic ground state in magnetoelectric LiCoPO 4

Abstract

Magnetic structures are investigated by means of neutron diffraction to shine light on the intricate details which are believed key to understanding the magnetoelectric effect in LiCoPO4. At zero field, a spontaneous spin canting of φ = 7(1)° is found. The spins tilt away from the easy b-axis towards c. Symmetry considerations lead to the magnetic point group m$$'\atop{z}$$ which is consistent with the previously observed magnetoelectric tensor form and weak ferromagnetic moment along b. For magnetic fields applied along a, the induced ferromagnetic moment couples via the Dzyaloshinskii- Moriya interaction to yield an additional field-induced spin canting. An upper limit to the size of the interaction is estimated from the canting angle.

Authors:
 [1];  [2];  [2];  [2];  [3];  [1];  [1];  [1];  [4];  [1];  [1]
  1. Technical Univ. of Denmark, Roskilde (Denmark). DTU National Lab. for Sustainable Energy
  2. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  3. Paul Scherrer Inst. (PSI), Villigen (Switzerland); Univ. of Copenhagen (Denmark). The Niels Bohr Inst.
  4. Ames Lab., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1503856
Alternate Identifier(s):
OSTI ID: 1546349
Report Number(s):
IS-J-9918
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; Journal Issue: 10; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Fogh, Ellen, Zaharko, Oksana, Schefer, Jürg, Niedermayer, Christof, Holm-Dahlin, Sonja, Sørensen, Michael Korning, Kristensen, Andreas Bott, Andersen, Niels Hessel, Vaknin, David, Christensen, Niels Bech, and Toft-Petersen, Rasmus. Dzyaloshinskii-Moriya interaction and the magnetic ground state in magnetoelectric LiCoPO4. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.104421.
Fogh, Ellen, Zaharko, Oksana, Schefer, Jürg, Niedermayer, Christof, Holm-Dahlin, Sonja, Sørensen, Michael Korning, Kristensen, Andreas Bott, Andersen, Niels Hessel, Vaknin, David, Christensen, Niels Bech, & Toft-Petersen, Rasmus. Dzyaloshinskii-Moriya interaction and the magnetic ground state in magnetoelectric LiCoPO4. United States. doi:10.1103/PhysRevB.99.104421.
Fogh, Ellen, Zaharko, Oksana, Schefer, Jürg, Niedermayer, Christof, Holm-Dahlin, Sonja, Sørensen, Michael Korning, Kristensen, Andreas Bott, Andersen, Niels Hessel, Vaknin, David, Christensen, Niels Bech, and Toft-Petersen, Rasmus. Wed . "Dzyaloshinskii-Moriya interaction and the magnetic ground state in magnetoelectric LiCoPO4". United States. doi:10.1103/PhysRevB.99.104421. https://www.osti.gov/servlets/purl/1503856.
@article{osti_1503856,
title = {Dzyaloshinskii-Moriya interaction and the magnetic ground state in magnetoelectric LiCoPO4},
author = {Fogh, Ellen and Zaharko, Oksana and Schefer, Jürg and Niedermayer, Christof and Holm-Dahlin, Sonja and Sørensen, Michael Korning and Kristensen, Andreas Bott and Andersen, Niels Hessel and Vaknin, David and Christensen, Niels Bech and Toft-Petersen, Rasmus},
abstractNote = {Magnetic structures are investigated by means of neutron diffraction to shine light on the intricate details which are believed key to understanding the magnetoelectric effect in LiCoPO4. At zero field, a spontaneous spin canting of φ = 7(1)° is found. The spins tilt away from the easy b-axis towards c. Symmetry considerations lead to the magnetic point group m$'\atop{z}$ which is consistent with the previously observed magnetoelectric tensor form and weak ferromagnetic moment along b. For magnetic fields applied along a, the induced ferromagnetic moment couples via the Dzyaloshinskii- Moriya interaction to yield an additional field-induced spin canting. An upper limit to the size of the interaction is estimated from the canting angle.},
doi = {10.1103/PhysRevB.99.104421},
journal = {Physical Review B},
number = 10,
volume = 99,
place = {United States},
year = {2019},
month = {3}
}

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