Coexistence of superconductivity and charge-density-wave domain in $1T$-Fe${}_x$Ta${}_{1-x}$SSe

Abstract

A series of $1T$-Fe${}_x$Ta${}_{1-x}$SSe (0 $\le x\le$ 0.1) single crystals was fabricated via the chemical-vapor-transport (CVT) method and investigated by structure, transport, and magnetic measurements along with the density-functional-theory (DFT) calculations. The superconductivity (SC) in parent $1T$-TaSSe can be gradually suppressed by Fe-substitution ($x\le 0.03$), accompanied by the disappearance of charge-density-wave (CDW). DFT calculations show that the Fe-substitution effectively inhibits the CDW superstructure and thereby the CDW domains are destroyed. With further increasing $x$ ($x>0.03$), the disorder-induced scattering increases, and the system enters into the possible Anderson localization (AL) state. Our results prove the SC develops in the CDW phase and coexists with the CDW domain in $1T$-TaSSe system.

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Cited by in corpus (3)

• Ultrafast transmission electron microscopy on dynamic process of a CDW transition in 1T-TaSe2
• NbSeTe -A New Layered Transition Metal Dichalcogenide Superconductor
• Pseudogap and weak multifractality in disordered Mott charge-density-wave insulator