Observation of Superconductivity in Highly Cr-Doped GaP Single Crystals
J.B. Gosk a, b, G. Strzelecka c, G. Kowalski a, A. Hruban c, M. Kamińska a, A. Twardowski a and J. Gronkowski a
aInstitute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
bFaculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
cInstitute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland
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Received: 17 06 2006;
Studying bulk GaP, highly doped with Cr, and searching for possible ferromagnetic semiconductor in view of spintronic applications, we found superconducting behavior of this material unexpectedly. Magnetization techniques and X-ray diffraction were applied to study these crystals. Magnetization revealed superconducting features up to about 6 K and X-ray studies showed that superconductivity might be related to small size Cr precipitates.
DOI: 10.12693/APhysPolA.110.189
PACS numbers: 74.10.+v, 75.50.Pp, 61.72.Vv, 61.72.Dd, 81.10.Dn