Effects of interlayer and bi-quadratic exchange coupling on layered triangular lattice antiferromagnets
| Autor: | M L Plumer, G Quirion, M. Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Spin states Spins Condensed matter physics 02 engineering and technology Classical Heisenberg model 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic field 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons General Materials Science Hexagonal lattice 010306 general physics 0210 nano-technology Anisotropy Spin (physics) |
| Zdroj: | Journal of physics. Condensed matter : an Institute of Physics journal. 32(13) |
| ISSN: | 1361-648X |
| Popis: | The magnetic field evolution of ground spin states of the stacked planar triangular antiferromagnet with antiferromagnetic interlayer interaction J c is explored using a minimal 3D classical Heisenberg model. A bi-quadratic coupling is also used to mimic the effect of spin fluctuations (Zhitomirsky 2015 J. Phys.: Conf. Ser. 592 012110) which are known to stabilize the magnetization plateau. A single ion anisotropy is included and states with a magnetic field applied in the ab plane and along the c axis are determined. For [Formula: see text]-plane, an additional new state, in contrast to 2D model (Zhitomirsky 2015 J. Phys.: Conf. Ser. 592 012110), is obtained with weak interlayer interaction, while the magnetization plateau vanishes at large J c and other new states with z components of spins emerge. For [Formula: see text]-axis, an extra state, compared with 2D model, is obtained with a weak interlayer interaction. When J c is large enough, only the state corresponding to the Umbrella phase in 2D model exits. |
| Databáze: | OpenAIRE |
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