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Solid-state 3He NMR of the superconducting rubidium endofulleride Rb3(3He@C60)

Solid-state 3He NMR of the superconducting rubidium endofulleride Rb3(3He@C60)
Solid-state 3He NMR of the superconducting rubidium endofulleride Rb3(3He@C60)

A new variant of the superconducting fulleride Rb 3 C 60 is presented, with 3 He atoms encapsulated in the C 60 cages. The 3 He nuclei act as sensitive NMR probes embedded in the material. The superconducting and normal states are characterized by 3 He NMR. Evidence is found for coexisting vortex liquid and vortex solid phases below the superconducting transition temperature. A strong dependence of the spin–lattice relaxation time constant on spectral frequency is observed in the superconducting state, as revealed by two-dimensional NMR utilizing an inverse Laplace transform. Surprisingly, this phenomenon persists, in attenuated form, at temperatures well above the superconducting transition.

1613-7507
1177-1192
Soundararajan, Murari
919eef6e-209d-49cb-a763-c21397f04d51
Bacanu, George R.
6ac562d2-cba9-4b2c-8749-83d2573f5821
Giustiniano, Francesco
f2692f6a-8f0a-49de-aa5d-7c2dff402545
Walkey, Mark C.
432139de-52cb-4e28-9ad0-b254e0523775
Hoffman, Gabriela
8b98ba1c-ee09-4922-82e4-a9240aa12e64
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Lees, Martin R.
a3f8f529-4465-45e0-a4f3-dec44b1c1753
Whitby, Richard J.
45632236-ab00-4ad0-a02d-6209043e818b
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Soundararajan, Murari
919eef6e-209d-49cb-a763-c21397f04d51
Bacanu, George R.
6ac562d2-cba9-4b2c-8749-83d2573f5821
Giustiniano, Francesco
f2692f6a-8f0a-49de-aa5d-7c2dff402545
Walkey, Mark C.
432139de-52cb-4e28-9ad0-b254e0523775
Hoffman, Gabriela
8b98ba1c-ee09-4922-82e4-a9240aa12e64
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Lees, Martin R.
a3f8f529-4465-45e0-a4f3-dec44b1c1753
Whitby, Richard J.
45632236-ab00-4ad0-a02d-6209043e818b
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3

Soundararajan, Murari, Bacanu, George R., Giustiniano, Francesco, Walkey, Mark C., Hoffman, Gabriela, Carravetta, Marina, Lees, Martin R., Whitby, Richard J. and Levitt, Malcolm H. (2023) Solid-state 3He NMR of the superconducting rubidium endofulleride Rb3(3He@C60). Applied Magnetic Resonance, 54 (11-12), 1177-1192. (doi:10.1007/s00723-023-01606-y).

Record type: Article

Abstract

A new variant of the superconducting fulleride Rb 3 C 60 is presented, with 3 He atoms encapsulated in the C 60 cages. The 3 He nuclei act as sensitive NMR probes embedded in the material. The superconducting and normal states are characterized by 3 He NMR. Evidence is found for coexisting vortex liquid and vortex solid phases below the superconducting transition temperature. A strong dependence of the spin–lattice relaxation time constant on spectral frequency is observed in the superconducting state, as revealed by two-dimensional NMR utilizing an inverse Laplace transform. Surprisingly, this phenomenon persists, in attenuated form, at temperatures well above the superconducting transition.

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Accepted/In Press date: 19 August 2023
Published date: December 2023
Additional Information: Funding Information: This work was supported by the Engineering and Physical Sciences Research Council (UK), grant numbers EP/T004320/1, EP/P009980/1, EP/M001962/1, EP/K00509X/1 and EP/P030491/1. The powder diffraction facilities (Rigaku Smartlab) were supported through grant number EP/K009877/1.
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Identifiers

Local EPrints ID: 482746
URI: http://eprints.soton.ac.uk/id/eprint/482746
DOI: doi:10.1007/s00723-023-01606-y
ISSN: 1613-7507
PURE UUID: d69dfec6-1f54-4cb5-91da-0dd41c24631e
ORCID for Murari Soundararajan: ORCID iD orcid.org/0000-0003-0767-8263
ORCID for George R. Bacanu: ORCID iD orcid.org/0000-0003-0822-8643
ORCID for Francesco Giustiniano: ORCID iD orcid.org/0000-0001-9277-8538
ORCID for Marina Carravetta: ORCID iD orcid.org/0000-0002-6296-2104
ORCID for Richard J. Whitby: ORCID iD orcid.org/0000-0002-9891-5502
ORCID for Malcolm H. Levitt: ORCID iD orcid.org/0000-0001-9878-1180

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Date deposited: 12 Oct 2023 16:39
Last modified: 18 Mar 2024 04:04

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Contributors

Author: Murari Soundararajan ORCID iD
Author: George R. Bacanu ORCID iD
Author: Francesco Giustiniano ORCID iD
Author: Mark C. Walkey
Author: Gabriela Hoffman
Author: Marina Carravetta ORCID iD
Author: Martin R. Lees
Author: Richard J. Whitby ORCID iD
Author: Malcolm H. Levitt ORCID iD

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