Vortex lattice states of bilayer electron-hole fluids in quantizing magnetic fields
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866912396631605248 |
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| author | Zou, Bo MacDonald, Allan H. |
| author_facet | Zou, Bo MacDonald, Allan H. |
| contents | We show that the ground state of a weakly charged two-dimensional electron-hole fluid in a strong magnetic field is a broken translation symmetry state with interpenetrating lattices of localized vortices and antivortices in the electron-hole-pair field. The vortices and antivortices carry fractional charges of equal sign but unequal magnitude and have a honeycomb lattice structure that contrasts with the triangular lattices of superconducting electron-electron-pair vortex lattices. We predict that increasing charge density or weakening magnetic field drives a vortex delocalization transition that would be signaled experimentally by an abrupt increase in counterflow transport resistance. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_08810 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Vortex lattice states of bilayer electron-hole fluids in quantizing magnetic fields Zou, Bo MacDonald, Allan H. Mesoscale and Nanoscale Physics Quantum Gases Strongly Correlated Electrons We show that the ground state of a weakly charged two-dimensional electron-hole fluid in a strong magnetic field is a broken translation symmetry state with interpenetrating lattices of localized vortices and antivortices in the electron-hole-pair field. The vortices and antivortices carry fractional charges of equal sign but unequal magnitude and have a honeycomb lattice structure that contrasts with the triangular lattices of superconducting electron-electron-pair vortex lattices. We predict that increasing charge density or weakening magnetic field drives a vortex delocalization transition that would be signaled experimentally by an abrupt increase in counterflow transport resistance. |
| title | Vortex lattice states of bilayer electron-hole fluids in quantizing magnetic fields |
| topic | Mesoscale and Nanoscale Physics Quantum Gases Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2411.08810 |