纳米波纹二维电子气中随角度变化的外斯振荡
Angle-dependent Weiss oscillations in a nanocorrugated two-dimensional electron gas
摘要：
我们研究了二维电子气在褶皱纳米结构中的扩散磁输运性质。纳米结构的弯曲几何形状呈现出有效的不均匀磁场，其进而产生外斯振荡。由于可以通过改变外部施加的磁场的方向来调整有效非均匀磁场的相对强度，因此这些外斯振荡表现出很强的方向依赖性。对于大的外部磁场，我们也发现了各向异性的正磁阻。
英文摘要：
We investigate the diffusive magnetotransport properties of a two-dimensional electron gas residing in a wrinkled nanostructure. The curved geometry of the nanostructure renders an effective inhomogeneous magnetic field which, in turns, yields Weiss oscillations. Since the relative strength of the effective inhomogeneous magnetic field can be tailored by changing the direction of the externally applied magnetic field, these Weiss oscillations exhibit a strong directional dependence. For large external magnetic fields we also find an anisotropic positive magnetoresistance.
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