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arXiv · 1208.0550

Stimulated emission of radiation using spin-population inversion in metals: a spin-laser

V. Korenivski·A. Iovan·A. Kadigrobov·R. I. Shekhter
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Abstract

Arrays of 10 nm-diameter point contacts of exchange-coupled spin-majority/spin-minority ferromagnetic metals, integrated into infrared-terahertz range photon resonators, are fabricated and measured electrically and optically. Giant, threshold-type electronic excitations under high-current pumping of the devices are observed as abrupt but reversible steps in device resistance, in many cases in access of 100%, which correlate with optical emission from the devices. The results are interpreted as due to stimulated spin-flip electron-photon relaxation in the system.

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V. Korenivski, A. Iovan, A. Kadigrobov, R. I. Shekhter. 2013-01-09. Stimulated emission of radiation using spin-population inversion in metals: a spin-laser. https://doi.org/10.1209/0295-5075%2F104%2F27011

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