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Resonant electron transmission through a finite quantum spin chain

Y. Avishai·Y. Tokura
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Abstract

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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Y. Avishai, Y. Tokura. 2001-02-13. Resonant electron transmission through a finite quantum spin chain. https://doi.org/10.1103/physrevlett.87.197203

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