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Frequency Dependent Transport Through a Spin Chain by van Hoogdalem, Kevin A.; Loss, Daniel is a scholarly article available to read on EtoBox.

What is Frequency Dependent Transport Through a Spin Chain about?

Motivated by potential applications in spintronics, we study frequency dependent spin transport in nonitinerant one-dimensional spin chains. We propose a system that behaves as a capacitor for the spin degree of freedom. It consists of a spin chain with two impurities a distance $d$ apart. We find that at low energy (frequency) the impurities flow to strong coupling, thereby effectively cutting the chain into three parts, with the middle island containing a discrete number of spin excitations. At finite frequency spin transport through the system increases. We find a strong dependence of the finite frequency characteristics both on the anisotropy of the spin chain and the applied magnetic field. We propose a method to measure the finite-frequency conductance in this system.

Author

van Hoogdalem, Kevin A.; Loss, Daniel

Published

2011

Language

EN