中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 会议论文
学科主题: 物理化学
题名: Electronic Structures of Fe3-xVxSi Probed by Photoemission Spectroscopy
作者: Cui YT(崔艺涛) ;  Guo FZ(郭方准) ;  木村昭夫 ;  宫本幸治 ;  Xie T(谢天) ;  Qiao S(乔山) ;  生天目博文 ;  齐藤佑儿 ;  小林启介 ;  阿让班塞尔 ;  Lu YW(鹿右武)
会议名称: The 9th International Conference on Spectroscopies in Novel Superconductors
会议日期: 2010-5-23
出版日期: 2010-05-23
会议地点: 中国
其他题名: 利用光电子谱进行 Fe3-xVxSi电子状态的研究
通讯作者: 崔艺涛
部门归属: 十一室
主办者: 复旦大学
摘要: Heusler-type ternary and pseudobinary compounds Y2ZX ( Y and Z denote transition metal atoms and X is a metalloid) in the L21 or DO3 structure, which exhibit remarkable “site-selectivity” properties, have received renewed interest owing to their ferromagnetic shape memory, half-metallic electronic structure and thermoelectric properties etc. Among them, Fe3-xVxSi (0 ≤ x ≤ 1) alloys show some remarkable electronic and magnetic property. It is known that magnetic structure of Fe3-xVxSi changes from ferromagnetic to antiferromagnetic ones with increasing the content of nonferromagnetic V. It is also reported that Fe3-xVxSi compounds show anomalous resistivity properties 1) and negative Seebeck coefficient (thermoelectric power) at larger x 2). In order to clarify the origin of these novel properties of Fe3-xVxSi alloys in terms of the electronic structures, the valence-band as well as core-level photoelectron spectroscopy has been performed at BL-23SU of SPring-8 with soft X-ray and at BL-29XU of SPring-8 with hard X-ray. In this study it is to be clarified that the main structures of 1s, 2p core level spectra of Si, Fe and V shift to the higher binding energy with the addition of the V concentration due to the chemical potential shift; as for the spectra of valence band, with the increase of V concentration, the main structures shift to higher binding energy, which should be the evidences for the movement of Fermi level to higher energy; the high resolution X-ray photoemission spectra also show that the intensity around Fermi level decreases with adding V, and a new sharp structure formed for x = 1, which indicate the formation of pseudo-gap at large x. The comparisons of experimental valence band spectra with those of the total DOS calculated with KKR-CPA method 1) are also done in this study. *This work was done under the approval of the SPring-8 Proposal Assessing Committee (Proposal No. 2005B3811)and was also supported by the Ministry of Education, Culture, Sports, Sciences and Technology of Japan. 1) Y. Nishino, et al, Phys. Rev. B 48, (1993)13607. 2) O. Nashima, et al, J. Alloys Compd., 383, (2004)298. 3) A. Bansil, et al, Phys. Rev. B 60, (1999)13396.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/114528
Appears in Collections:中国科学院大连化学物理研究所_会议论文

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Cui YT,Guo FZ,木村昭夫,et al. Electronic Structures of Fe3-xVxSi Probed by Photoemission Spectroscopy[C]. 见:The 9th International Conference on Spectroscopies in Novel Superconductors. 中国. 2010-5-23.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [崔艺涛]'s Articles
 [郭方准]'s Articles
 [木村昭夫]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [崔艺涛]‘s Articles
 [郭方准]‘s Articles
 [木村昭夫]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace