Contrasting behavior of the 5/2 and 7/3 fractional quantum Hall effect in a tilted field |
| |
Authors: | Dean C R Piot B A Hayden P Das Sarma S Gervais G Pfeiffer L N West K W |
| |
Affiliation: | Department of Physics, McGill University, Montreal, H3A 2T8, Canada. |
| |
Abstract: | Using a tilted-field geometry, the effect of an in-plane magnetic field on the even denominator nu=5/2 fractional quantum Hall state is studied. The energy gap of the nu=5/2 state is found to collapse linearly with the in-plane magnetic field above approximately 0.5 T. In contrast, a strong enhancement of the gap is observed for the nu=7/3 state. The radically distinct tilted-field behavior between the two states is discussed in terms of Zeeman and magneto-orbital coupling within the context of the proposed Moore-Read Pfaffian wave function for the 5/2 fractional quantum Hall effect. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|