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arXiv · 0711.4847

Supersolid of indirect excitons in electron-hole quantum Hall systems

C. -H. Zhang·Yogesh N. Joglekar
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Abstract

We investigate the ground state of a balanced electron-hole system in the quantum Hall regime using mean-field theory and obtain a rich phase diagram as a function of interlayer distance d and the filling factor within a layer. We identify an excitonic condensate phase, an excitonic supersolid phase, as well as uncorrelated Wigner crystal states. We find that balanced electron-hole system exhibits a supersolid phase a wide range of filling factors, with different crystal structure ground states. We obtain the ground state stiffness in the excitonic phases and show that the phase transitions from a uniform condensate to a supersolid is accompanied by a marked change in the stiffness. Our results provide the first semi-quantitative determination excitonic supersolid phase diagram and properties.

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C. -H. Zhang, Yogesh N. Joglekar. 2007-11-29. Supersolid of indirect excitons in electron-hole quantum Hall systems. https://arxiv.org/abs/0711.4847

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