Magnetization plateaus and supersolid phases in an extended Shastry–Sutherland model
| Autor: | Andrew Wibawa, Keola Wierschem, Pinaki Sengupta, Zhifeng Zhang |
|---|---|
| Přispěvatelé: | School of Physical and Mathematical Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Condensed matter physics Quantum Monte Carlo 02 engineering and technology Shastry-Sutherland 021001 nanoscience & nanotechnology Condensed Matter Physics Magnetic hysteresis Plateau (mathematics) 01 natural sciences Electronic Optical and Magnetic Materials Supersolid Magnetization Exchange bias Physics [Science] 0103 physical sciences Ising model 010306 general physics 0210 nano-technology Magnetization Plateaus Spin-½ |
| Popis: | New magnetization plateaus and supersolid phases are identified in an extended Shastry–Sutherland model – with additional longer range interactions and exchange anisotropy – over a wide range of interaction parameters and an applied magnetic field. The model is appropriate for describing the low energy properties of some members of the rare earth tetraborides. Using a plaquette representation and exact mapping of ground state configurations in the Ising limit, supplemented by large scale quantum Monte Carlo simulations to include the effects of exchange interactions, we have identified several magnetization plateaus and associated spin supersolid phases. Our methods enable us to elucidate the underlying structure and mechanism of formation of the supersolid phases, thus gaining deeper understanding into their emergence from competing interactions. Additionally, in this regime we find evidence of a fractional plateau at 1∕9 saturation magnetization, which may hold the clue to understanding the fractional plateau in TmB4 that exhibits magnetic hysteresis. MOE (Min. of Education, S’pore) Accepted version |
| Databáze: | OpenAIRE |
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