Spin-Driven Bond Order in a 1/5-Magnetization Plateau Phase in a Triangular Lattice Antiferromagnet CuFeO2
arXiv:1310.2746 · doi:10.1103/PhysRevB.88.134414
Abstract
We have investigated spin-wave excitations in a magnetic-field-induced 1/5-magnetization plateau phase in a triangular lattice antiferromagnet CuFeO2 (CFO), by means of inelastic neutron scattering measurements under applied magnetic fields of up to 13.4 T. Comparing the observed spectra with the calculations in which spin-lattice coupling effects for the nearest neighbor exchange interactions are taken into account, we have determined the Hamiltonian parameters in the field-induced 1/5- plateau phase, which directly show that CFO exhibits a bond order associated with the magnetic structure in this phase.
5 pages, 2 figures, accepted for publication in PRB
References in corpus (4)
- Spin phonon induced colinear order and magnetization plateaus in triangular and kagome antiferromagnets. Applications to CuFeO_2
- Identification of microscopic spin-polarization coupling in the ferroelectric phase of a magnetoelectric multiferroic CuFe1-xAlxO2
- The Collinear Magnetic Phases of the Geometrically-Frustrated Antiferromagnet CuFeO: The Importance of Stacking
- Spin-Wave Spectrum in `Single-Domain' Magnetic Ground State of Triangular Lattice Antiferromagnet CuFeO2
Cited by in corpus (5)
- HORACE: software for the analysis of data from single crystal spectroscopy experiments at time-of-flight neutron instruments
- Quantum Magnetism in Minerals
- 57Fe Mössbauer study of unusual magnetic structure of multiferroic 3R-AgFeO2
- Polarization memory in the nonpolar magnetic ground state of multiferroic CuFeO2
- Intermediate field-induced phase of the honeycomb magnet BaCo(AsO)