Abstract

The two charge density wave (CDW) transitions in 4Hb TaS2 have been followed under pressure. They both fell in temperature; the 315 K atmospheric-pressure transition would be suppressed at 35 kbar, the 22 K transition was suppressed at 8.5 kbar. The fall in the 22 K transition, associated with CDW formation in the trigonal prismatic layers, correlates with the rise in superconducting transition temperature.

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