Hydrostatic pressure study of paramagnetic-ferromagnetic phase transition in (Ga,Mn)As

Details Hydrostatic pressure study of paramagnetic-ferromagnetic phase transition in (Ga,Mn)As Hydrostatic pressure study of paramagnetic-ferromagnetic phase transition in (Ga,Mn)As

2011-08-19

arxiv.org/abs/1108.3960v1

Phys. Rev. B 82, 153204 (2010)

Physics

Condensed Matter

Materials Science

8 pages, 7 figures

Scientific paper

10.1103/PhysRevB.82.153204

The effect of hydrostatic pressure on the paramagnetic - ferromagnetic phase transition has been studied in (Ga,Mn)As. The variation of the Curie temperature (TC) with pressure was monitored by two transport methods: (1) - measurement of zero field resistivity versus temperature {\rho}(T), (2) - dependence on temperature of the Hall voltage hysteresis loop. Two specimens of different resistivity characteristics were examined. The measured pressure-induced changes of TC were relatively small (of the order of 1K/GPa) for both samples, however they were opposite for the two.

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