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Mott Transition in the A15 Phase of Cs3C60
- Source :
- Alloul , H , Wzietek , P , Mito , T , Pontiroli , D , Aramini , M , Ricco , M , Itie , J P & Elkaim , E 2017 , ' Mott Transition in the A15 Phase of Cs3C60 : Absence of a Pseudogap and Charge Order ' Physical Review Letters , vol 118 , no. 23 , 237601 . DOI: 10.1103/PhysRevLett.118.237601
- Publication Year :
- 2017
-
Abstract
- We present a detailed NMR study of the insulator-to-metal transition induced by an applied pressure p in the A15 phase of Cs3C60. We evidence that the insulating antiferromagnetic (AFM) and superconducting (SC) phases coexist only in a narrow p range. At fixed p, in the metallic state above the SC transition T-c, the Cs-133 and C-13 NMR spin-lattice relaxation data are seemingly governed by a pseudogaplike feature. We prove that this feature, also seen in the (CsNMR)-Cs-133 shift data, is rather a signature of the Mott transition which broadens and smears out progressively for increasing (p,T). The analysis of the variation of the quadrupole splitting nu(Q) of the Cs-133 NMR spectrum precludes any cell symmetry change at the Mott transition and only monitors a weak variation of the lattice parameter. These results open an opportunity to consider theoretically the Mott transition in a multiorbital three-dimensional system well beyond its critical point.
Details
- Database :
- OAIster
- Journal :
- Alloul , H , Wzietek , P , Mito , T , Pontiroli , D , Aramini , M , Ricco , M , Itie , J P & Elkaim , E 2017 , ' Mott Transition in the A15 Phase of Cs3C60 : Absence of a Pseudogap and Charge Order ' Physical Review Letters , vol 118 , no. 23 , 237601 . DOI: 10.1103/PhysRevLett.118.237601
- Notes :
- 5, Alloul , H , Wzietek , P , Mito , T , Pontiroli , D , Aramini , M , Ricco , M , Itie , J P & Elkaim , E 2017 , ' Mott Transition in the A15 Phase of Cs3C60 : Absence of a Pseudogap and Charge Order ' Physical Review Letters , vol 118 , no. 23 , 237601 . DOI: 10.1103/PhysRevLett.118.237601, English
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1003271383
- Document Type :
- Electronic Resource