Published November 1, 2011
| Version v1
Journal article
Double-k phase of the Dzyaloshinskii-Moriya helimagnet Ba2CuGe2O7
- 1. Neutron Scattering and Magnetism Group, Laboratory for Solid State Physics, ETH Zuerich, Zuerich (Switzerland)
- 2. Laboratory for Developments and Methods (LDM), Paul Scherrer Institut, Villigen (Switzerland)
Description
Neutron diffraction is used to reinvestigate the magnetic phase diagram of the noncentrosymmetric tetragonal antiferromagnet Ba2CuGe2O7. An incommensurate double-k magnetic phase is detected near the commensurate-incommensurate phase transition. This phase is stable only for field closely aligned with the fourfold symmetry axis. The results emphasize the inadequacy of existing theoretical models for this unique material, and points to additional terms in the Hamiltonian or lattice effects.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevB.84.180406;
- arXiv
- arXiv:1108.0432v1;
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 84
- Journal Issue
- 18
- Journal Page Range
- p. 180406-180406.4
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43074575
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM COMPOUNDS; COPPER COMPOUNDS; GERMANIUM COMPOUNDS; HAMILTONIANS; MAGNETS; NEUTRON DIFFRACTION; OXYGEN COMPOUNDS; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; SYMMETRY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; DIAGRAMS; DIFFRACTION; EQUIPMENT; INFORMATION; MATHEMATICAL OPERATORS; QUANTUM OPERATORS; SCATTERING; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2011 American Institute of Physics