Smith, RP;
Kusmartseva, A;
Ko, YTC;
Saxena, SS;
Akrap, A;
Forro, L;
Laad, M;
... Skipper, NT; + view all
(2006)
Pressure dependence of the superconducting transition temperature in C6Yb and C6Ca.
PHYS REV B
, 74
(2)
, Article 024505. 10.1103/PhysRevB.74.024505.
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Abstract
We have studied the evolution, with hydrostatic pressure, of the recently-discovered superconductivity in the graphite intercalation compounds C6Yb and C6Ca. We present pressure-temperature phase diagrams, for both superconductors, established by electrical transport and magnetization measurements. In the range 0-1.2 GPa the superconducting transition temperature increases linearly with pressure in both materials with dT(c)/dP=+0.37 +/- 0.01 and +0.50 +/- 0.05 K/GPa for C6Yb and C6Ca, respectively. The transition temperature in C6Yb, which has been measured up to 2.3 GPa, reaches a peak at around 1.8 GPa and then starts to drop. We also discuss how this pressure dependence may be explained within a plasmon pairing mechanism. (c) 2006 American Institute of Physics.
| Type: | Article |
|---|---|
| Title: | Pressure dependence of the superconducting transition temperature in C6Yb and C6Ca |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.74.024505 |
| Keywords: | GRAPHITE-INTERCALATION COMPOUNDS, STATE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9476 |
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