摘要
本文详细讨论了一维调制磁场中二维电子气的热传导系数及热电系数等热力学输运特性．磁场调制部分的存在使二维电子气的热力学输运系数中除了通常的ＳｄＨ振荡特性外还表现出与磁场调制周期相关的新的振荡特性．在低温条件下（Ｔ＝１，２Ｋ），各量均表现出Ｗｅｉｓｓ振荡和通常的ＳｄＨ振荡两种振荡特性．弱磁场（Ｂ０＜０．２Ｔ）时，ＳｄＨ振荡分辨不出来，只有Ｗｅｉｓｓ振荡；稍强磁场（Ｂ０＞０．２Ｔ）时，ＳｄＨ振荡开始出现．在稍高温度（Ｔ＝４，１０Ｋ）条件下，各物理量的ＳｄＨ振荡成份几乎完全消失，只剩下Ｗｅｉｓｓ振荡．
The thermal transport properties of two dimensional electron gas in a one dimensional periodic magnetic field in the regime of linear response, including the thermopower and thermal condutivity are studied. At low temperatures ( T =1,2K), the thermal transport coefficients have two kinds of oscillations, i.e., the Shubnikov de Haas oscillations (SdH oscillations) and the novel oscillations (Weiss oscillations), corresponding to the modulation of magnetic field. At high temperatue ( T =4,10K),all the SdH oscillations disappear and only the weiss oscillations remain.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
1998年第3期26-31,共6页
Journal of Henan Normal University(Natural Science Edition)
关键词
二维电子气
周期调制磁场
热力学输运系数
two dimensional electron gas
periodic magnetic field
thermal transport coefficients
