On the ‘Supersolid’ Response of the Second Layer of 4He on Graphite

Jan Nyeki; Anastasia Phillis; Brian Cowan; John Saunders

doi:10.1007/s10909-017-1779-x

On the ‘Supersolid’ Response of the Second Layer of ⁴He on Graphite

Jan Nyeki, Anastasia Phillis, Brian Cowan, John Saunders

Research output: Contribution to journal › Special issue › peer-review

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Abstract

Recent torsional oscillator measurements on the second layer of 4He adsorbed on graphite have identified an anomalous superfluid response over a coverage range near third layer promotion, with four distinct coverage regimes. Here we present details of the superfluid response in the coverage regime immediately below third layer promotion. A scaling analysis of the inferred superfluid fraction shows the characteristic temperature governing the superfluid response to decrease, approaching zero near the coverage at which simulations predict the second layer to form a conventional incommensurate solid.

Original language	English
Pages (from-to)	475-481
Number of pages	7
Journal	Journal of Low Temperature Physics
Volume	187
Issue number	5-6
Early online date	27 Apr 2017
DOIs	https://doi.org/10.1007/s10909-017-1779-x
Publication status	Published - Jun 2017

Keywords

Superfluid Helium-4
Helium Film
Supersolid

Access to Document

10.1007/s10909-017-1779-xLicence: CC BY

Accepted ManuscriptAccepted author manuscript, 1.12 MBLicence: CC BY

1 Letter

Intertwined superfluid and density wave order in two-dimensional 4He
Nyeki, J., Phillis, A., Ho, A., Lee, D., Coleman, P., Parpia, J., Cowan, B. & Saunders, J., 6 Feb 2017, In: Nature Physics. 13, p. 455-459 5 p.
Research output: Contribution to journal › Letter › peer-review

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1 Finished

Quantum Phase Transitions and Quantum Criticality in Helium Films
Saunders, J. (PI), Casey, A. (CoI), Nyeki, J. (CoI), Lusher, C. (CoI), Cowan, B. (CoI), Yager, B. (CoI), Kent, K. (CoI) & Arnold, F. (CoI)
Eng & Phys Sci Res Council EPSRC
1/06/10 → 1/11/13
Project: Research

Cite this

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title = "On the {\textquoteleft}Supersolid{\textquoteright} Response of the Second Layer of 4He on Graphite",

abstract = "Recent torsional oscillator measurements on the second layer of 4He adsorbed on graphite have identified an anomalous superfluid response over a coverage range near third layer promotion, with four distinct coverage regimes. Here we present details of the superfluid response in the coverage regime immediately below third layer promotion. A scaling analysis of the inferred superfluid fraction shows the characteristic temperature governing the superfluid response to decrease, approaching zero near the coverage at which simulations predict the second layer to form a conventional incommensurate solid.",

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AU - Nyeki, Jan

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AU - Saunders, John

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N2 - Recent torsional oscillator measurements on the second layer of 4He adsorbed on graphite have identified an anomalous superfluid response over a coverage range near third layer promotion, with four distinct coverage regimes. Here we present details of the superfluid response in the coverage regime immediately below third layer promotion. A scaling analysis of the inferred superfluid fraction shows the characteristic temperature governing the superfluid response to decrease, approaching zero near the coverage at which simulations predict the second layer to form a conventional incommensurate solid.

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KW - Superfluid Helium-4

KW - Helium Film

KW - Supersolid

U2 - 10.1007/s10909-017-1779-x

DO - 10.1007/s10909-017-1779-x

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EP - 481

JO - Journal of Low Temperature Physics

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On the ‘Supersolid’ Response of the Second Layer of 4He on Graphite

Abstract

Keywords

Access to Document

Research output

Intertwined superfluid and density wave order in two-dimensional 4He

Projects

Quantum Phase Transitions and Quantum Criticality in Helium Films

Cite this

On the ‘Supersolid’ Response of the Second Layer of ⁴He on Graphite