Nuclear Spin Orientation Dependence of Magnetoconductance: A New Method for Measuring the Spin of Charged Excitations in the QHE

Journal Article · Mon Nov 30 23:00:00 EST 1998 · Physical Review Letters

OSTI ID:2034

Bowers, C R ^[1]; Reno, J L; Simmons, J A; Vitkalov, S A

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1. Sandia National Laboratories

A new method for measuring the spin of the electrically charged ground state excitations m the Q$j~j quantum Hall effect ia proposed and demonstmted for the tirst time in GaAs/AIGaAs nndtiquantum wells. The method is &sed on the nuclear spin orientation dependence of" the 2D dc conductivity y in the quantum Hall regime due to the nuclear hyperfine interaction. As a demonstration of this method the spin of the electrically charged excitations of the ground state is determined at filling factor v = 1.

• Research Organization: Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 2034
• Report Number(s): SAND98-2688J; ON: DE00002034
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
Excited States
Hall Effect
Nuclear Alignment
Spin