Magnetization of two-dimensional heavy holes with boundaries in a perpendicular magnetic field

• 来源期刊: 中国物理B（英文版）
• 关键词: magnetization de Haas-van Alphen oscillations edge state Rashba spin-orbit coupling heavy holes
• 年，卷（期）: 2009,（10）
• 页码范围: 4430-4436
• 页数: 7页
• 语种: 英文

摘要

The magnetisation of heavy holes in III-V semiconductor quantum wells with Rashba spin-orbit coupling(SOC)in an external perpendicular magnetic field is studied theoretically.We concentrate on the effects on the magnetisationinduced by the system boundary,the Rashba SOC and the temperature.It is found that the sawtooth-like de Haasvan Alphen(dHvA)oscillations of the magnetisation will change dramatically in the presence of such three factors.Especially,the effects of the edge states and Rashba SOC on the magnetisation are more evident when the magneticfield is smaller.The oscillation center will shift when the boundary effect is considered and the Rashba SOC willbring beating patterns to the dHvA oscillations.These effects on the dHvA oscillations are preferably observed at lowtemperatures.With increasing temperature,the dHvA oscillations turn to be blurred and eventually disappear.