【摘要】 报道了非对称ＧａＡｓ／ＡｌＡｓ双势垒结构（ＤＢＳ）中的Γ－Ｘ－Γ磁隧穿振荡现象，用磁场倒数周期求得ＡｌＡｓ层中Ｘ谷和ＧａＡｓ层中Γ谷之间的能带不连续值与通常公认值符合很好．良好的振荡特性可作为定量研究Γ－Ｘ耦合强度的灵敏的实验办法更多还原

【Abstract】 X Γ magneto tunneling oscillations in asymmetrical GaAs/AlAs double barrier structures (DBS) were reported.The band offset between the X valley in AlAs barrier and the Γ valley in GaAs well given by the period in reciprocal field was found to be very close to the commonly adopted value.Owing to the well developed oscillatory feature,a new and sensitive experimental way to quantitatively study the Γ X coupling strength was provided.更多还原