Competition of charge-density waves and superconductivity in sulfur.
A one-dimensional charge-density wave (CDW) instability is shown to be responsible for the formation of the incommensurate modulation of the atomic lattice in the high-pressure phase of sulfur. The coexistence of, and competition between, the CDW and the superconducting state leads to the previously observed increase of T{c} up to 17 K, which we attribute to the suppression of the CDW instability, the same phenomenology found in doped layered dichalcogenides.
Degtyareva
O
O
SUPA, School of Physics and Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
Magnitskaya
M V
MV
Kohanoff
J
J
Profeta
G
G
Scandolo
S
S
Hanfland
M
M
McMahon
M I
MI
Gregoryanz
E
E