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arXiv · 1706.08829

Stability of the $N = 2$ bubble states in Corbino geometry under a tilted field

Pengjie Wang·Yijia Wu·Hua Chen·Ruoxi Zhang·L. N. Pfeiffer·K. W. West·Rui-Rui Du·X. C. Xie·Xi Lin
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Abstract

We measured the activation energy gap of the N = 2 bubble states using tilted-field technique in two GaAs/AlGaAs samples with Corbino geometry, and observed monotonically decreasing energy gaps with the increasing total magnetic field. The observed tilt angle dependence is discussed based on magneto-orbital coupling and finite-size effect. We also found a bubble state at an uncommon filling factor of 4.67, with an unanticipated energy gap of up to 5.35 K and opposite in-plane field dependence.

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Pengjie Wang, Yijia Wu, Hua Chen, Ruoxi Zhang, L. N. Pfeiffer, K. W. West, Rui-Rui Du, X. C. Xie, Xi Lin. 2017-06-27. Stability of the $N = 2$ bubble states in Corbino geometry under a tilted field. https://arxiv.org/abs/1706.08829

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