Orbital Magnetization Measurement of the Quantum Hall to Insulator Transition
| dc.creator | Faulhaber, D. R. | |
| dc.creator | Jiang, H. W. | |
| dc.date | 2003-09-03 | |
| dc.date.accessioned | 2026-07-07T02:53:16Z | |
| dc.date.available | 2026-07-07T02:53:16Z | |
| dc.description | We present a magnetization measurement probing the transition from a quantum Hall to insulating (QH-I) state for a two-dimensional electron gas in a disordered GaAs/AlGaAs heterostructure. Using a highly sensitive DC torque magnetometer, we discover an abrupt change in the orbital magnetization precisely at the critical point for the QH-I transition. Since this transition is predicted to be a second order quantum phase transition, a thermodynamic signature in magnetization is totally unexpected. The observed feature is reminiscent of the well-known de Haas-van Alphen oscillations arising from discontinuous jumps of the chemical potential as Landau Levels are successively populated. | |
| dc.description | 11 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0309087 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0309087 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22149 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Orbital Magnetization Measurement of the Quantum Hall to Insulator Transition | |
| dc.type | text |