Magnetocapacitance study of the fractional-quantum-Hall effect: Quasiparticle charge and spin polarization

✍ Scribed by S.I Dorozhkin; M.O Dorokhova; R.J Haug; K Ploog

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 97 KB
• Volume: 1
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(97)00011-8

✦ Synopsis

By the method of capacitance spectroscopy and of magnetotransport we have investigated the = 1 3 and 2 3 fractionalquantum-Hall-e ect (FQHE) states in gated GaAs=AlGaAs heterojunctions with tuned electron areal density. Our experimental results conÿrm the theoretical prediction of the fractional quasiparticle charge e * = e=3 in the = 1 3 FQHE state and of the existence of spin-aligned quasiholes and spin-reversed quasielectrons in the fully spin-polarized = 2 3 FQHE state.