Microscopic Study of Domain Structure in Charge Density Wave States in 2H-TaS1.8Se0.2

S. Ohta, Y. Fujisawa, S. Demura, H. Sakata

研究成果: ジャーナルへの寄稿会議記事査読

2 被引用数 (Scopus)


Transition metal dichalcogenides 2H-TaS2 and 2H-TaSe2 show charge density wave (CDW) state and superconductivity. It has been reported that elemental substitution of chalcogenide suppresses the CDW and enhances superconductivity. However, how the CDW order is suppressed by the substitution has not been clarified yet. To clarify this, we performed real space observation of the CDW state in the commensurate phase of 2H-TaS1.8Se0.2 by scanning tunneling microscopy. The existence of domains separated by walls at which the phase of the CDW shifts was observed. The change in the electronic state on the domain boundaries in 2H-TaS1.8Se0.2 was not as drastic as that in 1T-FexTa1-xS2.

ジャーナルJournal of Physics: Conference Series
出版ステータス出版済み - 15 10月 2019
イベント31st International Symposium on Superconductivity, ISS 2018 - Tsukuba, Ibaraki, 日本
継続期間: 12 12月 201814 12月 2018


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