NMR study of the Mott transitions to superconductivity in the two Cs_3C_60 phases

Abstract

We report an NMR and magnetometry study on the expanded intercalated fulleride Cs_3C_60 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 (SC) state, occuring 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 SC 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 inter-ball distance is the relvevant parameter driving the electronic behavior and quantum transitions of these systems.

arXiv comment5 pages, 5 figures.

References in corpus (6)

• Superconductivity in Fullerides
• Strongly Correlated Superconductivity
• Theory of the Metal-Paramagnetic Mott-Jahn-Teller Insulator Transition in A_4C_{60}
• Gaps and excitations in fullerides with partially filled bands : NMR study of Na2C60 and K4C60
• Detection by NMR of a "local spin-gap" in quenched CsC60
• Influence of local fullerene orientation on the electronic properties of A3C60 compounds

Cited by in corpus (30)

• Unified understanding of superconductivity and Mott transition in alkali-doped fullerides from first principles
• Ab initio derivation of electronic low-energy models for C60 and aromatic compounds
• Signatures of the Mott transition in the antiferromagnetic state of the two-dimensional Hubbard model
• Exotic s-wave superconductivity in alkali-doped fullerides
• Enhancing superconductivity in A3C60 fullerides
• NMR study of the Superconducting gap variation near the Mott transition in Cs${}_3$C${}_{60}$
• Spin Dynamics at the Mott Transition and in the Metallic State of the Cs_{3}C_{60} Superconducting Phases
• Non-empirical Study of Superconductivity in Alkali-doped Fullerides Based on Density Functional Theory for Superconductors
• Dynamical Jahn--Teller effect and antiferromagnetism in Cs${}_3$C${}_{60}$
• Double-expansion impurity solver for multiorbital models with dynamically screened U and J
• Electronic Pair-Binding and Hund's Rule Violations in Doped $C_{60}$
• Orbital disproportionation of electronic density - a universal feature of alkali-doped fullerides
• Mott transition in the A15 phase of Cs${}_3$C${}_{60}$: absence of pseudogap and charge order
• Dynamical Jahn-Teller effect of fullerene anions
• Tuning the electronic states and superconductivity in alkali fulleride films
• Mott localization in the correlated superconductor Cs3C60 resulting from the molecular Jahn-Teller effect
• Evidence for Band Renormalizations in Strong-coupling Superconducting Alkali-fulleride Films
• NMR in strongly correlated materials
• Orthorhombic fulleride (CH3NH2)K3C60 close to Mott-Hubbard instability: Ab initio study
• Electronic correlations stabilize the antiferromagnetic Mott state in Cs${}_3$C${}_{60}$
• Magnetic States, Correlation Effects and Metal-Insulator Transition in FCC Lattice
• The role of electron-vibron interaction and local pairing in conductivity and superconductivity of alkali-doped fullerides
• Unconventional orbital ordering and emergent dimensional reduction in fulleride superconductors
• The Mott State and Superconductivity in Face-Centred Cubic Structured Cs3C60: A 133Cs-Nuclear Magnetic Resonance Study under Pressure
• From Friedel oscillations and Kondo effect to the pseudogap in cuprates
• Jahn-Teller effect in cubic fullerides A${}_3$C${}_{60}$
• NMR investigation of the pressure induced Mott transition to superconductivity in Cs3C60 isomeric compounds
• Bypassing the lattice BCS-BEC crossover in strongly correlated superconductors: resilient coherence from multiorbital physics
• Theoretical Phase diagram of unconventional alkali-doped fullerides
• Nanoscale orbital excitations and the infrared spectrum of a molecular Mott insulator: A15-Cs${}_3$C${}_{60}$