Features of transport phenomenas in magnetic semiconductors with laser-induced periodic nanostructures

Semchuk, O. Yu.Institute of Surface Chemistry NAS of Ukraine,National Academy of Sciences in Ukraine (författare)

The mechanisms of formation of the laser-induced periodic surface and bulk nanostructures in magnetic semiconductors are considered. Their influence on transport phenomena in ferromagnetic semiconductors (FMSC) is investigated. It is shown that under action of laser beams (LB) a laser-induced periodic nanostructures — gratings of the electron and magnon temperatures, electron concentration and electric fields arises in FMSC. It is determined, that the illuminating of an external surface of the FMSC by several LB results in an emerging new effect — appearance of a dropping site on the voltage-current characteristic (VCC) of the FMSC with the static laser-induced periodic nanostructures. This effect can only be observed for the carrier concentration n ≥ 1018 cm−3, since for smaller concentration the contribution of an additional current caused by the presence of the laser-induced periodic nanostructures will be insignificant.

Grechko, L. G.Institute of Surface Chemistry NAS of Ukraine,National Academy of Sciences in Ukraine (författare)
Bila, R.V.Institute of Surface Chemistry NAS of Ukraine,National Academy of Sciences in Ukraine (författare)
Willander, Magnus,1948-bChalmers University of Technology and Goteborg University,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mwi (författare)
Karlsteen, Magnus,1964bChalmers University of Technology and Goteborg University,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mkn (författare)
Institute of Surface Chemistry NAS of UkraineNational Academy of Sciences in Ukraine (creator_code:org_t)

Ingår i:Materials Science & Engineering: Elsevier BV27:5-8, s. 1360-13630921-50931873-49360928-49311873-0191

Av författaren/redakt...: Semchuk, O. Yu.; Grechko, L. G.; Bila, R.V.; Willander, Magnu ...; Karlsteen, Magnu ...

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