MISC

2016年1月

Characteristic Fermi surfaces and charge density wave in SrAl4 and related compounds with the BaAl4-type tetragonal structure

JOURNAL OF ALLOYS AND COMPOUNDS
  • Ai Nakamura
  • ,
  • Taro Uejo
  • ,
  • Hisatomo Harima
  • ,
  • Shingo Araki
  • ,
  • Tatsuo C. Kobayashi
  • ,
  • Miho Nakashima
  • ,
  • Yasushi Amako
  • ,
  • Masato Hedo
  • ,
  • Takao Nakama
  • ,
  • Yoshichika Onuki

654
開始ページ
290
終了ページ
299
記述言語
英語
掲載種別
DOI
10.1016/j.jallcom.2015.08.193
出版者・発行元
ELSEVIER SCIENCE SA

We succeeded in growing single crystals of SrAl4 and related compounds with the BaAl4-type tetragonal structure by the self-flux method, and measured the electrical resistivity, magnetic susceptibility, Hall coefficient, thermoelectric power, and de Haas-van Alphen (dHvA) effect. A plausible characteristic feature of the charge density wave (CDW) was observed below T-CDW = 243 K in SrAl4. We also studied an effect of pressure on the electronic state in SrAl4 by measuring the electrical resistivity and thermoelectric power. T-CDW is found to decrease with increasing pressure, with a rate of dT(CDW)/dP = -12.5 K/GPa. To clarify the Fermi surface nesting, we studied the Fermi surface in SrAl4, which is found to be different from the Fermi surfaces of the similar compounds SrGa4, BaGa4, and BaAl4 without CDW. The Fermi surfaces in these compounds were determined from the dHvA experiments, together with the energy band calculations. (C) 2015 Published by Elsevier B.V.

Web of Science ® 被引用回数 : 3

リンク情報
DOI
https://doi.org/10.1016/j.jallcom.2015.08.193
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000363270500041&DestApp=WOS_CPL

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