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Antiferromagnetic instability of heavy-fermion alloys with conduction band impurities

Technical Report:

Abstract

The antiferromagnetic instability of heavy-fermion alloys with conduction band impurities is examined in the single-site coherent-potential approximation with the strong correlation treated by the slave-boson technique of Kotliar and Ruckenstein. The variation of paramagnetic-antiferromagnetic phase boundary with the impurity concentration has been studied in the case of isoelectronic doping. Our results show that the isoelectronic doping favours the formation of antiferromagnetism if the impurities increase the cell volume, thus suppress the c-f mixing, which is in agreement with the experimental observations in Ce(Cu{sub 1-x}Ag{sub x})6 and Ce(Cu{sub 1-x}Au{sub x})6. The obtained phase diagram can also be used to explain the effects of non-isoelectronic substitutions of Al for Cu in CeCu{sub 6}. (author). 19 refs, 2 figs.
Authors:
Chengchung, Lee; [1]  Xiaohua, Xu [2] 
  1. International Centre for Theoretical Physics, Trieste (Italy)
  2. Nanjing Univ., Nanjing (China). Dept. of Physics
Publication Date:
Aug 01, 1994
Product Type:
Technical Report
Report Number:
IC-94/253
Reference Number:
SCA: 665000; PA: AIX-26:013831; EDB-95:032862; SN: 95001325630
Resource Relation:
Other Information: PBD: Aug 1994
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CERIUM ALLOYS; ANTIFERROMAGNETISM; BAND THEORY; COPPER ALLOYS; CRYSTAL DOPING; HAMILTONIANS; IMPURITIES; ISOELECTRONIC ATOMS; MAGNETIC SUSCEPTIBILITY; MEAN-FIELD THEORY; PARAMAGNETISM; PHASE DIAGRAMS; 665000; PHYSICS OF CONDENSED MATTER
OSTI ID:
10112925
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE95614307; TRN: XA9438392013831
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
17 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Chengchung, Lee, and Xiaohua, Xu. Antiferromagnetic instability of heavy-fermion alloys with conduction band impurities. IAEA: N. p., 1994. Web.
Chengchung, Lee, & Xiaohua, Xu. Antiferromagnetic instability of heavy-fermion alloys with conduction band impurities. IAEA.
Chengchung, Lee, and Xiaohua, Xu. 1994. "Antiferromagnetic instability of heavy-fermion alloys with conduction band impurities." IAEA.
@misc{etde_10112925,
title = {Antiferromagnetic instability of heavy-fermion alloys with conduction band impurities}
author = {Chengchung, Lee, and Xiaohua, Xu}
abstractNote = {The antiferromagnetic instability of heavy-fermion alloys with conduction band impurities is examined in the single-site coherent-potential approximation with the strong correlation treated by the slave-boson technique of Kotliar and Ruckenstein. The variation of paramagnetic-antiferromagnetic phase boundary with the impurity concentration has been studied in the case of isoelectronic doping. Our results show that the isoelectronic doping favours the formation of antiferromagnetism if the impurities increase the cell volume, thus suppress the c-f mixing, which is in agreement with the experimental observations in Ce(Cu{sub 1-x}Ag{sub x})6 and Ce(Cu{sub 1-x}Au{sub x})6. The obtained phase diagram can also be used to explain the effects of non-isoelectronic substitutions of Al for Cu in CeCu{sub 6}. (author). 19 refs, 2 figs.}
place = {IAEA}
year = {1994}
month = {Aug}
}