Anomalous pressure dependence of the superconducting transition temperature in
Physical Review B, 2014•APS
We report the pressure dependence of the superconducting transition temperature T c in
TlNi 2 Se 2− x S x detected via the ac susceptibility method. The pressure-temperature
phase diagram constructed for TlNi 2 Se 2, TlNi 2 S 2, and TlNi 2 SeS exhibits two
unexpected features:(a) a sudden collapse of the superconducting state at moderate
pressure for all three compositions and (b) a dome-shaped pressure dependence of T c for
TlNi 2 SeS. These results point to the nontrivial role of S substitution and its subtle interplay …
TlNi 2 Se 2− x S x detected via the ac susceptibility method. The pressure-temperature
phase diagram constructed for TlNi 2 Se 2, TlNi 2 S 2, and TlNi 2 SeS exhibits two
unexpected features:(a) a sudden collapse of the superconducting state at moderate
pressure for all three compositions and (b) a dome-shaped pressure dependence of T c for
TlNi 2 SeS. These results point to the nontrivial role of S substitution and its subtle interplay …
We report the pressure dependence of the superconducting transition temperature in detected via the ac susceptibility method. The pressure-temperature phase diagram constructed for , , and exhibits two unexpected features: (a) a sudden collapse of the superconducting state at moderate pressure for all three compositions and (b) a dome-shaped pressure dependence of for . These results point to the nontrivial role of S substitution and its subtle interplay with applied pressure, as well as interesting superconducting properties of the system.
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