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Evidence for a phase transition in the fractional quantum Hall effect

Eisenstein, J. P. and Stormer, H. L. and Pfeiffer, L. and West, K. W. (1989) Evidence for a phase transition in the fractional quantum Hall effect. Physical Review Letters, 62 (13). pp. 1540-1543. ISSN 0031-9007. doi:10.1103/PhysRevLett.62.1540.

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We observe a novel transition between distinct fractional quantum Hall states sharing the same filling fraction ν=8/5. The transition is driven by tilting the two-dimensional electron-gas sample relative to the external magnetic field and is manifested by a sharp change in the dependence of the measured activation energy on tilt angle. After an initial decline, the activation energy abruptly begins to increase as the tilt angle exceeds about 30°. A plausible model for these results implies a transition from a spin-unpolarized quantum fluid at small angles to a polarized one at higher angles.

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Additional Information:©1989 The American Physical Society Received 22 December 1988 It is a pleasure to thank R. Willett, B. I. Halperin, A. H. MacDonald, and P. B. Littlewood for discussions and Kirk Bladwin for his fine technical help. S. M. Girvin also deserves thanks.
Issue or Number:13
Record Number:CaltechAUTHORS:EISprl89
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4035
Deposited By: Archive Administrator
Deposited On:25 Jul 2006
Last Modified:08 Nov 2021 20:14

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