Destabilization of the Charge Density Wave and the Absence of Superconductivity in ScV 6 Sn 6 under High Pressures up to 11 GPa

V Sn ( = Sc, Y, or rare earth) is a new family of kagome metals that have a similar vanadium structural motif as V Sb ( = K, Rb, Cs) compounds. Unlike V Sb , ScV Sn is the only compound among the series of V Sn that displays a charge density wave (CDW) order at ambient pressure, yet it shows no supe...

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Published inMaterials Vol. 15; no. 20
Main Authors Zhang, Xiaoxiao, Hou, Jun, Xia, Wei, Xu, Zhian, Yang, Pengtao, Wang, Anqi, Liu, Ziyi, Shen, Jie, Zhang, Hua, Dong, Xiaoli, Uwatoko, Yoshiya, Sun, Jianping, Wang, Bosen, Guo, Yanfeng, Cheng, Jinguang
Format Journal Article
LanguageEnglish
Published Switzerland 21.10.2022
Subjects
ScV6Sn6
charge density wave
high pressure
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Summary:V Sn ( = Sc, Y, or rare earth) is a new family of kagome metals that have a similar vanadium structural motif as V Sb ( = K, Rb, Cs) compounds. Unlike V Sb , ScV Sn is the only compound among the series of V Sn that displays a charge density wave (CDW) order at ambient pressure, yet it shows no superconductivity (SC) at low temperatures. Here, we perform a high-pressure transport study on the ScV Sn single crystal to track the evolutions of the CDW transition and to explore possible SC. In contrast to V Sb compounds, the CDW order of ScV Sn can be suppressed completely by a pressure of about 2.4 GPa, but no SC is detected down to 40 mK at 2.35 GPa and 1.5 K up to 11 GPa. Moreover, we observed that the resistivity anomaly around the CDW transition undergoes an obvious change at ~2.04 GPa before it vanishes completely. The present work highlights a distinct relationship between CDW and SC in ScV Sn in comparison with the well-studied V Sb .
ISSN:1996-1944
1996-1944