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Title: Role of Valence Fluctuations in the Superconductivity of Ce122 Compounds

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL)
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1174113
Report Number(s):
BNL-107533-2015-JA
R&D Project: LS001
DOE Contract Number:
DE-SC00112704
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 113; Journal Issue: 8
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Yamaoka H., Jarrige I., Ikeda,Y., Tsujii,N., Zekko,T., Yamamoto,Y., Mizuki,J., Lin,J.F., Hiraoka,N., Ishii,H., Tsuei,K.D., Kobayaski,T.C., Honda,F., and Onuki,Y. Role of Valence Fluctuations in the Superconductivity of Ce122 Compounds. United States: N. p., 2014. Web. doi:10.1103/PhysRevLett.113.086403.
Yamaoka H., Jarrige I., Ikeda,Y., Tsujii,N., Zekko,T., Yamamoto,Y., Mizuki,J., Lin,J.F., Hiraoka,N., Ishii,H., Tsuei,K.D., Kobayaski,T.C., Honda,F., & Onuki,Y. Role of Valence Fluctuations in the Superconductivity of Ce122 Compounds. United States. doi:10.1103/PhysRevLett.113.086403.
Yamaoka H., Jarrige I., Ikeda,Y., Tsujii,N., Zekko,T., Yamamoto,Y., Mizuki,J., Lin,J.F., Hiraoka,N., Ishii,H., Tsuei,K.D., Kobayaski,T.C., Honda,F., and Onuki,Y. Fri . "Role of Valence Fluctuations in the Superconductivity of Ce122 Compounds". United States. doi:10.1103/PhysRevLett.113.086403.
@article{osti_1174113,
title = {Role of Valence Fluctuations in the Superconductivity of Ce122 Compounds},
author = {Yamaoka H. and Jarrige I. and Ikeda,Y. and Tsujii,N. and Zekko,T. and Yamamoto,Y. and Mizuki,J. and Lin,J.F. and Hiraoka,N. and Ishii,H. and Tsuei,K.D. and Kobayaski,T.C. and Honda,F. and Onuki,Y.},
abstractNote = {},
doi = {10.1103/PhysRevLett.113.086403},
journal = {Physical Review Letters},
number = 8,
volume = 113,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 2014},
month = {Fri Aug 01 00:00:00 EDT 2014}
}
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  • From the reaction of elemental copper and either lanthanides or actinides in molten alkali metal/polychalcogenide salts, several new quaternary phases have been discovered. Specifically, these phases are ACuM{sub 2}Q{sub 6}(where A = K, M = La, Q =S: A = Cs, M = Ce, Q = S; or A = K, M = Ce, Q = Se) and ACuMQ{sub 3} (where A = Cs, M = Ce, Q = S; or A = K, M = U, Q = Se). The CsCuCe{sub 2}S{sub 6} crystallizes in the orthorhombic space group Immm with a = 5.500-(1) {Angstrom}, b = 22.45(1) {Angstrom},more » c = 4.205(4) {Angstrom}. The KCuCe{sub 2}Se{sub 6} is isostructural. The CsCuCeS{sub 3} crystallizes in the orthorhombic space group Cmcm with a = 4.024(2) {Angstrom}, b = 15.154(2) {Angstrom}, c = 10.353(3) {Angstrom}. The KCuUSe{sub 3} is isostructural. In ACuM{sub 2}Q{sub 6}, the lanthanides bond to a mixture of mono- and disulfides in a bicapped trigonal prismatic geometry; these polyhedra subsequently connect in two dimensions, forming layers equivalent to those seen in the ZrSe{sub 3} structure type with Cu{sup +} atoms residing in tetrahedral sites within the layers and alkali cations in the interlayer gallery. The compounds of the formula ACuMQ{sub 3} also possess a layered structure. Here the [MQ{sub 6}] octahedral units form corrugated, two-dimensional sheets via edge-sharing in the first dimension and corner-sharing in the second. Copper cations are coordinated to tetrahedral sites in the folds of the corrugations, and alkali cations are again in the intergallery region. Detailed of the synthesis, structure, and properties of these compounds are discussed. 42 refs., 14 figs., 8 tabs.« less
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