Volume 102, Number 3, May 2013
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||16 May 2013|
Dynamic magnetization process in the frustrated Shastry-Sutherland system TmB4
1 Institute for Advanced Materials, South China Academy of Advanced Photonics Engineering, South China Normal University - Guangzhou 510006, China
2 Laboratory of Solid State Microstructures, Nanjing University - Nanjing 210093, China
3 School of Physics and Chemistry, Henan Polytechnic University - Jiaozuo 454000, China
Received: 4 February 2013
Accepted: 18 April 2013
The dynamic magnetization behaviors of the classical Ising model on the Shastry-Sutherland lattice with additional long-range interactions are investigated by means of the Glauber dynamics, in order to understand the fascinating magnetization plateaus and the hysteresis loop observed in TmB4. With this algorithm, the experimental 1/n (n = 7, 9, 11) magnetization plateaus as well as the main 1/2 one can be reproduced at low temperatures. Furthermore, the hysteresis loop can also be well explained by the present theory. It is indicated that the formation of domain walls due to the non-equilibrium magnetization process may be responsible for the emergence of the fractional plateaus.
PACS: 75.10.Hk – Classical spin models / 07.55.Db – Generation of magnetic fields; magnets / 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems
© EPLA, 2013
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