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Tunneling effects on impurity spectral function in coupled asymmetric quantum wires

Marcos R. S. Tavares·G. -Q. Hai·G. E. Marques
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Abstract

The impurity spectral function is studied in coupled double quantum wires at finite temperatures. Simple anisotropy in the confinement direction of the wires leads to finite non-diagonal elements of the impurity spectral function matrix. These non-diagonal elements are responsible for tunneling effects and result in pronounced extra peak in the impurity spectral function up to temperatures as high as 20 K.

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Marcos R. S. Tavares, G. -Q. Hai, G. E. Marques. 2003-08-10. Tunneling effects on impurity spectral function in coupled asymmetric quantum wires. https://doi.org/10.1103/physrevb.68.165304

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