In:
Science, American Association for the Advancement of Science (AAAS), Vol. 323, No. 5921 ( 2009-03-20), p. 1585-1590
Abstract:
The body-centered cubic A15-structured cesium fulleride Cs 3 C 60 is not superconducting at ambient pressure and is free from disorder, unlike the well-studied face-centered cubic A 3 C 60 alkali metal fulleride superconductors. We found that in Cs 3 C 60 , where the molecular valences are precisely assigned, the superconducting state at 38 kelvin emerges directly from a localized electron antiferromagnetic insulating state with the application of pressure. This transition maintains the threefold degeneracy of the active orbitals in both competing electronic states; it is thus a purely electronic transition to a superconducting state, with a dependence of the transition temperature on pressure-induced changes of anion packing density that is not explicable by Bardeen-Cooper-Schrieffer (BCS) theory.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.1169163
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
2009
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
Permalink