Publication detail

Significant suppression of ferromagnetism by hydrostatic pressure in the diluted magnetic semiconductor Sb2-xVxTe3

Year: 2007

Type of publication: článek v odborném periodiku

Name of source: Applied Physics Letters

Publisher name: American Institute of Physics

Place: Melville

Page from-to: 22506-122510

Titles:

Language	Name	Abstract	Keywords
cze	Významné potlačení feromagnetismu hydrostatickým tlakem ve zředěných magnezických polovodičích Sb2-xVxTe3	Článek se zabývá vlivem hydrostatického tlaku na magnetotransportní vlastnosti monokrystalů Sb2-xVxTe3. Výsledky naznačují, že ferromagnetismus je v těchto materiálech skutečně zprostředkován volnými děrami v rámci RKKY teorie.
eng	Significant suppression of ferromagnetism by hydrostatic pressure in the diluted magnetic semiconductor Sb2-xVxTe3	The paper reports on the hydrostatic pressure dependence of the magnetotransport properties of ferromagnetic Sb2-xVxTe3 single crystals with x = 0.02 ? 0.03. Pressure significantly increases the free hole concentration in these compounds. In turn, the Curie temperature is suppressed by roughly 40%, which goes against many models that would predict an increase in Curie temperature? with increasing carrier concentration. These results indicate that the ferromagnetism in these materials is carrier-mediated, and that a full RKKY model that takes into account the oscillatory nature of the indirect exchange interaction among localized spins is needed in order to explain the data.	chalcogenides;crystal growth;transport properties;magnetic properties;hydrostatic pressure

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