SUPERCONDUCTIVITY IN (LUC)(2)(NI(2)B(2)) AND (LUC)(NI(2)B(2))

Authors
GAO L QIU XD CAO Y MENG RL SUN YY XUE YY CHU CW
Citation
L. Gao et al., SUPERCONDUCTIVITY IN (LUC)(2)(NI(2)B(2)) AND (LUC)(NI(2)B(2)), Physical review. B, Condensed matter, 50(13), 1994, pp. 9445-9448
Citations number
7
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
13
Year of publication
1994
Pages
9445 - 9448
Database
ISI
SICI code
0163-1829(1994)50:13<9445:SI(A(>2.0.ZU;2-9
Abstract
We have studied (LuC)2(Ni2B2) and (LuC)(Ni2B2) at ambient and high pre ssures. Superconductivity was discovered in (LuC)2(Ni2B2) at 2.9 K. Pr essure was found to suppress both the electrical resistivity and the s uperconducting transition temperature rapidly for (LuC)2(Ni2B2) but on ly slightly for (LuC)(Ni2B2), in spite of their similar chemical-bondi ng behavior. The observations can be understood in terms of the smalle r density of states at the Fermi surface and the greater pressure-indu ced band broadening of (LuC)2(Ni2B2) than (LuC)(Ni2B2).