Plasma-enhanced pulsed-laser deposition of single-crystalline M o2 C ultrathin superconducting films

Fan Zhang, Zhi Zhang, Huichao Wang, Cheuk Ho Chan, Ngai Yui Chan, Xin Xin Chen, Ji Yan Dai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

71 Citations (Scopus)


Transition-metal carbides (TMCs) possess many intriguing properties and inspiring application potentials, and recently the study of a two-dimensional form of TMCs has attracted great attention. Herein, we report successful fabrication of continuous Mo2C ultrathin single-crystalline films at 700°C with an approach of plasma-enhanced pulsed-laser deposition. By sophisticated structural analyses, the Mo2C films are characterized as single crystal with a rarely reported face-centered cubic structure. In further electrical transport measurements, superconductivity observed in the Mo2C films demonstrates a typical two-dimensional feature, which is consistent with Berezinskii-Kosterlitz-Thouless transitions. Besides, large upper critical magnetic fields are discovered in this system. Our work offers an approach to grow large-area and high-quality TMCs at relatively low temperatures. This study may stimulate more related investigations on the synthesis, characterizations, and applications of two-dimensional TMCs.

Original languageEnglish
Article number034002
JournalPhysical Review Materials
Issue number3
Publication statusPublished - 21 Aug 2017

ASJC Scopus subject areas

  • General Materials Science
  • Physics and Astronomy (miscellaneous)


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