中国物理B ›› 2015, Vol. 24 ›› Issue (8): 87502-087502.doi: 10.1088/1674-1056/24/8/087502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Magnetization plateaus and frequency dispersion of hysteresis on frustrated dipolar array

张又天   

  1. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • 收稿日期:2015-02-27 修回日期:2015-05-06 出版日期:2015-08-05 发布日期:2015-08-05

Magnetization plateaus and frequency dispersion of hysteresis on frustrated dipolar array

Zhang You-Tian (张又天)   

  1. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • Received:2015-02-27 Revised:2015-05-06 Online:2015-08-05 Published:2015-08-05
  • Contact: Zhang You-Tian E-mail:ytzhang@smail.nju.edu.cn

摘要: Competings or frustrated interactions are common for condensed matter systems. In consideration of the effect of dipole–dipole interaction, the static properties of square lattice spin systems are investigated using the Wang–Landau algorithm. The dynamic hysteresis is also simulated using the Monte Carlo (MC) method. The step-like magnetization under a DC magnetic field and two distinct peaks in hysteresis dispersion under an AC magnetic field are observed. Then, the formation of the properties of the frustrated dipolar array are discussed.

关键词: artificial spin ice, Monte Carlo method, magnetization process

Abstract: Competings or frustrated interactions are common for condensed matter systems. In consideration of the effect of dipole–dipole interaction, the static properties of square lattice spin systems are investigated using the Wang–Landau algorithm. The dynamic hysteresis is also simulated using the Monte Carlo (MC) method. The step-like magnetization under a DC magnetic field and two distinct peaks in hysteresis dispersion under an AC magnetic field are observed. Then, the formation of the properties of the frustrated dipolar array are discussed.

Key words: artificial spin ice, Monte Carlo method, magnetization process

中图分类号:  (Domain effects, magnetization curves, and hysteresis)

  • 75.60.-d
75.60.Ch (Domain walls and domain structure) 75.60.Nt (Magnetic annealing and temperature-hysteresis effects) 02.70.Uu (Applications of Monte Carlo methods)