Evidence for a band broadening across the ferromagnetic transition of Cr1/3NbSe2

Hu  WZ; Wang  GT; Hu  RWPetrovic  CMorosan  ECava  RJFang  ZWang  NL

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Evidence for a band broadening across the ferromagnetic transition of Cr1/3NbSe2

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The electronic structure of Cr1/3NbSe2 is studied via optical spectroscopy. We observe two low-energy interband transitions in the paramagnetic phase, which split into four peaks as the compound enters the ferromagnetic state. The band structure calculation indicates the four peaks are interband transitions to the spin up Cr e(g) states. We show that the peak splitting below the Curie temperature is not due to the exchange splitting of spin-up and spin-down bands, but directly reflects a band broadening effect in Cr-derived states upon the spontaneous ferromagnetic ordering.

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《Physical review, B. Condensed matter and materials physics》 |2008年第8期|085120-1-085120-6-0|共6页
作者
Hu WZ; Wang GT; Hu RWPetrovic CMorosan ECava RJFang ZWang NL;
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作者单位

[Hu, WZ;

Wang, GT;

Fang, ZWang, NL] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100080, Peoples R China[Hu, RWPetrovic, C] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA[Hu, RW] Brown Univ, Dept Phys, Providence, RI 02912 USA[Morosan, E;

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正文语种英语
中图分类固体物理学;
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TANTALUM DICHALCOGENIDES; TRANSPORT-PROPERTIES; MAGNETIC-PROPERTIES; NIOBIUM;

Evidence for a band broadening across the ferromagnetic transition of Cr1/3NbSe2

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