Resonant electron transmission through a finite quantum spin chain

Details Resonant electron transmission through a finite quantum spin chain Resonant electron transmission through a finite quantum spin chain

2001-02-13

arxiv.org/abs/cond-mat/0102236v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages including 4 .eps figures

Scientific paper

10.1103/PhysRevLett.87.197203

Electron transport in a finite one dimensional quantum spin chain (with ferromagnetic exchange) is studied within an $s-d$ exchange Hamiltonian. Spin transfer coefficients strongly depend on the sign of the $s-d$ exchange constant. For a ferromagnetic coupling, they exhibit a novel resonant pattern, reflecting the salient features of the combined electron-spin system. Spin-flip processes are inelastic and feasible at finite voltage or at finite temperature.

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