Proposal for quantum spin tomography in ferromagnet-normal conductors

被引：1
|
作者：
Samuelsson, P. [1 ]
Brataas, Arne [2 ]
机构：
[1] Lund Univ, Div Math Phys, S-22100 Lund, Sweden
[2] Norwegian Univ Sci & Technol, Dept Phys, NO-7491 Trondheim, Norway
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 18期
关键词：
SHOT-NOISE; INJECTION; TRANSPORT; CHARGE;
D O I：
10.1103/PhysRevB.81.184422
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a theory for a complete reconstruction of nonlocal spin correlations in ferromagnet-normal conductors. This quantum spin tomography is based on cross-correlation measurements of electric currents into ferromagnetic terminals with controllable magnetization directions. For normal injectors, nonlocal spin correlations are universal and strong. The correlations are suppressed by spin-flip scattering and, for ferromagnetic injectors, by increasing injector polarization.
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页数：5
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