2134/17364
Robert P. Smith
Robert P.
Smith
Anna Kusmartseva
Anna
Kusmartseva
Yuen T.C. Ko
Yuen T.C.
Ko
Siddharth S. Saxena
Siddharth S.
Saxena
Ana Akrap
Ana
Akrap
Laszlo Forro
Laszlo
Forro
Mukul S. Laad
Mukul S.
Laad
Thomas E. Weller
Thomas E.
Weller
Mark Ellerby
Mark
Ellerby
Neal T. Skipper
Neal T.
Skipper
Pressure dependence of the superconducting transition temperature in C6Yb and C6Ca
Loughborough University
2015
untagged
Physical Sciences not elsewhere classified
2015-04-24 14:09:32
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Pressure_dependence_of_the_superconducting_transition_temperature_in_C6Yb_and_C6Ca/9408398
We have studied the evolution, with hydrostatic pressure, of the recently-discovered superconductivity in the graphite intercalation compounds C 6 Yb and C 6 Ca . We present pressure-temperature phase diagrams, for both superconductors, established by electrical transport and magnetization measurements. In the range 0–1.2GPa the superconducting transition temperature increases linearly with pressure in both materials with dT c ∕dP=+0.37±0.01 and +0.50±0.05K∕GPa for C 6 Yb and C 6 Ca , respectively. The transition temperature in C 6 Yb , which has been measured up to 2.3GPa , reaches a peak at around 1.8GPa and then starts to drop. We also discuss how this pressure dependence may be explained within a plasmon pairing mechanism.