NMR Study of the Mott Transitions to Superconductivity in the Two Cs3C60 Phases

被引：51

作者：

Ihara, Y. ^{[1
]}

Alloul, H. ^{[1
]}

Wzietek, P. ^{[1
]}

Pontiroli, D. ^{[2
]}

Mazzani, M. ^{[2
]}

Ricco, M. ^{[2
]}

机构：

[1] Univ Paris Sud 11, CNRS, UMR 8502, Phys Solides Lab, F-91405 Orsay, France

[2] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.104.256402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a NMR and magnetometry study on the expanded intercalated fulleride Cs3C60 in both its A15 and face centered cubic structures. NMR allowed us to evidence that both exhibit a first-order Mott transition to a superconducting state, occurring at distinct critical pressures p(c) and temperatures T-c. Though the ground state magnetism of the Mott phases differs, their high T paramagnetic and superconducting properties are found similar, and the phase diagrams versus unit volume per C-60 are superimposed. Thus, as expected for a strongly correlated system, the interball distance is the relevant parameter driving the electronic behavior and quantum transitions of these systems.

引用

页数：4

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