Probing spin physics in the quantum Hall regime by heat capacity and magnetotransport measurements

✍ Scribed by Sorin Melinte; Mansour Shayegan; Vincent Bayot

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 295 KB
• Volume: 3
• Category: Article
• ISSN: 1631-0705
• DOI: 10.1016/s1631-0705(02)01355-5

✦ Synopsis

We review recent heat capacity and magnetotransport experiments on GaAs/AlGaAs heterostructures containing multilayer two-dimensional electron systems (2DESs) in the quantum Hall regime. Emphasis in this article is on the study of the heat capacity near Landau level filling factor ν = 1. We also present a detailed survey of the development of the quantum Hall effect in tilted-magnetic fields for ν 2. Among the novel phenomena we address is the strong coupling between the nuclear spins and the electrons associated with the spin phase transitions of the 2DES at ν = 4/3 and near ν = 1.