Supersolid of indirect excitons in electron-hole quantum Hall systems

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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.
5 pages, 4 figures

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Mesoscale and Nanoscale Physics, Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/143228

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0711.4847
 http://arxiv.org/abs/0711.4847

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arXiv