Spin Accumulation in a Quantum Cluster Resolved in Tunnel Junctions
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概要
- 論文の詳細を見る
Transport through a small metal island attached to two ferromagnetic reservoirs by tunnel junctions is considered. The discrete energy levels due to size quantization, the Coulomb charging energy and the non-equilibrium spin accumulation due to the spin-dependent tunneling rates are taken into account. Analytical results for the zero-bias conductance and magnetoresistance are found. In the nonlinear current–voltage regime, numerical calculations reveal discrete jumps in the tunnel magnetoresistance when the applied voltage is in resonance with the energy difference associated with tunneling of an electron into the ground or excited states of the quantum cluster. Effects of spin-dependent discrete energy levels in magnetic quantum clusters on the tunnel magnetoresistance are studied in detail.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2001-04-15
著者
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Hirano Masaki
Department Of Applied Physics Nagoya University
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Inoue Junichiro
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Nazarov Yuli
Department Of Applied Physics Delft University Of Technology
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Brataas Arne
Harvard University Lyman Laboratory Of Physics
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Bauer Gerrit
Department Of Applied Physics Delft University Of Technology
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Inoue Junichiro
Department of Applied Physics, Nagoya University, Nagoya 464-01, Japan
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Hirano Masaki
Department of Applied Physics, Nagoya University, Nagoya 464-01, Japan
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