Enhanced Superconductivity in Restacked TaS2 Nanosheets

Jie Pan, Chenguang Guo, Changsheng Song, Xiaofang Lai, Hui Li, Wei Zhao, Hui Zhang, Gang Mu, Kejun Bu, Tianquan Lin, Xiaoming Xie, Mingwei Chen, Fuqiang Huang

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

Since interface superconductivity was discovered at the interface between two insulating layers LaAlO3 and SrTiO3, such interface-induced superconducting systems have been a research hotspot in superconductivity. Here, we report homogeneous interfaces formed by stacking chemically exfoliated monolayer TaS2 nanosheets randomly. Enhanced superconductivity of Tc = 3 K is observed, compared with 0.8 K of parent 2H-TaS2. The measurement of heat capacity shows the increase of electronic specific-heat coefficient γ of restacked TaS2 nanosheets compared to parent 2H-TaS2 crystals. Density functional theory calculations indicate that increase and delocalization of electron states near the Fermi surface due to the homogeneous interfaces effects could account for the enhanced superconductivity.

Original languageEnglish
Pages (from-to)4623-4626
Number of pages4
JournalJournal of the American Chemical Society
Volume139
Issue number13
DOIs
Publication statusPublished - 2017 Apr 5
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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