Dipolelike dynamical nuclear spin polarization around a quantum point contact
نویسندگان
چکیده
منابع مشابه
Spontaneous spin polarization in quantum point contacts.
We use spatial spin separation by a magnetic focusing technique to probe the polarization of quantum point contacts. The point contacts are fabricated from p-type GaAs/AlGaAs heterostructures. A finite polarization is measured in the low-density regime, when the conductance of a point contact is tuned to < 2e2/h. Polarization is stronger in samples with a well-defined "0.7 structure."
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M. J. A. Schuetz,1 E. M. Kessler,2,3 L. M. K. Vandersypen,4 J. I. Cirac,1 and G. Giedke1 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany 2Physics Department, Harvard University, Cambridge, Massachusetts 02318, USA 3ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02318, USA 4Kavli Institute of NanoScience, TU Delft, P.O. Box 5...
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متن کاملDetection of spin polarization in quantum point contacts
We use spatial spin separation by a magnetic focusing technique to probe the polarization of quantum point contacts. The point contacts are fabricated from p-type GaAs/AlGaAs heterostructures. A finite polarization is measured in the low density regime, when the conductance of a point contact is tuned to <2e2/h. Polarization is stronger in samples with a well defined ‘0.7 structure’. (Some figu...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2018
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.97.075440