Detecting spin-polarized currents in ballistic nanostructures.
نویسندگان
چکیده
We demonstrate a mesoscopic spin polarizer/analyzer system that allows the spin polarization of current from a quantum point contact in a large in-plane magnetic field to be measured. A transverse electron focusing geometry is used to couple current from an emitter point contact into a collector point contact. At large in-plane fields, with the point contacts biased to transmit only a single spin (g70% are found for both emitter and collector at 300 mK and 7 T in-plane field.
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ورودعنوان ژورنال:
- Physical review letters
دوره 89 26 شماره
صفحات -
تاریخ انتشار 2002