Hall crystal states at nu = 2 and moderate landau level mixing |
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Authors: | Murthy |
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Affiliation: | Institut fur Physik, Johannes Gutenberg-Universitat, D-55099 Mainz, Germany. |
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Abstract: | The structure and orientational ordering of N2O molecules physisorbed on graphite (0001) is investigated applying x-ray, neutron, and low-energy electron diffraction techniques. Combining the results of the three techniques, we find that N2O forms a highly ordered, hexagonal, commensurate (sqrt[21]xsqrt[21])R10.89 degrees phase. The unit cell contains seven molecules which are arranged in a seven-sublattice pinwheel structure, unexpected for linear molecules on a hexagonal lattice. Potential energy calculations corroborate these results. |
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