SUBSTITUTION EXPERIMENTS ON SUPERCONDUCTING LA2C2X2 (X=CL, BR, I)

Authors
AHN K MATTAUSCH H SIMON A
Citation
K. Ahn et al., SUBSTITUTION EXPERIMENTS ON SUPERCONDUCTING LA2C2X2 (X=CL, BR, I), Zeitschrift fur anorganische und allgemeine Chemie, 623(4), 1997, pp. 619-622
Citations number
13
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur anorganische und allgemeine Chemie
ISSN journal
00442313 → ACNP
Volume
623
Issue
4
Year of publication
1997
Pages
619 - 622
Database
ISI
SICI code
0044-2313(1997)623:4<619:SEOSL(>2.0.ZU;2-A
Abstract
The layered carbide bromide La2C2Br2 becomes superconducting at 6.2 K. We studied the matrix effect on T-c due to (isoelectronic) halogen su bstitution. T-c increases with the amount of substitution by chlorine to a maximum value of 7.2 K, and it decreases when Br- is partially su bstituted by I-. La2C2I2 itself is non-superconducting down to 2 K. Ho wever, substitution of I- by 10% Cl- leads to superconductivity at 2.2 K.