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Keane, Z K; Godfrey, M C; Fricke, S; Burke, A M; Micolich, A P; Hamilton, A R; Beere, H E; Ritchie, D A
2010 Conference on Optoelectronic and Microelectronic Materials and Devices, 2010-Dec.Conference Proceeding
We present preliminary measurements of resistively detected nuclear magnetic resonance (NMR) in GaAs-AlGaAs quantum point contacts (QPC). Nuclear spins in the host crystal are polarized through the hyperfine interaction with carriers near the QPC; this polarization can be detected via the four-terminal resistance and manipulated with a radio-frequency magnetic field.
