Phase transition and in situ construction of lateral heterostructure of 2D superconducting α/β Mo2 C with sharp interface by electron beam irradiation

Nanoscale
Zhibo LiuWencai Ren

Abstract

Lateral heterostructures of 2D materials have several interesting properties and potential applications, and they are usually fabricated by chemical vapor deposition. However, it still remains a great challenge to fabricate 2D lateral heterostructures with well-controlled patterns and sharp interfaces. Herein, we found that the 2D α-Mo2C crystal, a recently emerging 2D superconductor, experiences a phase transition from the α phase to β phase on electron beam irradiation in a transmission electron microscope because of the migration of carbon atoms among the molybdenum octahedrons. Combined with first-principles calculations, the carbon atom migration paths and the corresponding energy barriers were discussed. Utilizing this unique phase transition property of 2D α-Mo2C crystal, we demonstrated the precise in situ construction of the lateral heterostructure of 2D superconducting α/β Mo2C with a well-controlled pattern and sharp interface using advanced aberration-corrected scanning transmission electron microscopy.

References

May 15, 1991·Physical Review. B, Condensed Matter·D YangR F Frindt
Feb 15, 2001·Physical Review Letters·L F ChibotaruV V Moshchalkov
Mar 28, 2009·Science·Caglar O GiritA Zettl
Jan 29, 2013·Journal of the American Chemical Society·Weiqing ZhengRobert Schlögl
Jan 29, 2013·Nature Nanotechnology·Zheng LiuPulickel M Ajayan
Jun 22, 2013·Physical Chemistry Chemical Physics : PCCP·José Roberto dos Santos PolitiFrancesc Illas
Jul 16, 2013·Nature Materials·Wei YangGuangyu Zhang
Dec 21, 2013·Advanced Materials·Michael NaguibYury Gogotsi
Apr 22, 2014·Nature Nanotechnology·Yung-Chang LinKazu Suenaga
Aug 26, 2014·Nature Materials·Chunming HuangXiaodong Xu
Aug 26, 2014·Nature Nanotechnology·Xiaoping HongFeng Wang
Sep 27, 2014·Physical Review Letters·Toma SusiQuentin Ramasse
Sep 30, 2014·Nature Materials·Yongji GongPulickel M Ajayan
Aug 19, 2015·Nature Materials·Chuan XuWencai Ren
Jul 30, 2016·Science·K S NovoselovA H Castro Neto

❮ Previous
Next ❯

Citations

Jul 25, 2018·Advanced Materials·Xiaolong Liu, Mark C Hersam
Dec 7, 2019·Nanoscale·Huilin WangDongfeng Xue
Jul 31, 2020·Proceedings of the National Academy of Sciences of the United States of America·Fu ZhangMauricio Terrones
Feb 27, 2021·The Journal of Physical Chemistry Letters·Junli ZhangXixiang Zhang
Nov 27, 2019·Nano Letters·Yuwei GuoJian Shi

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Migration

Cell migration is involved in a variety of physiological and pathological processes such as embryonic development, cancer metastasis, blood vessel formation and remoulding, tissue regeneration, immune surveillance and inflammation. Here is the latest research.