High quality PdTe2 thin films grown by molecular beam epitaxy

doi:10.1088/1674-1056/27/8/086804

中国物理B ›› 2018, Vol. 27 ›› Issue (8): 86804-086804.doi: 10.1088/1674-1056/27/8/086804

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

High quality PdTe₂ thin films grown by molecular beam epitaxy

1 Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China;
2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2018-04-28 修回日期:2018-05-04 出版日期:2018-08-05 发布日期:2018-08-05
通讯作者: Xiao Lin, Hong-Jun Gao E-mail:xlin@ucas.ac.cn;hjgao@iphy.ac.cn

High quality PdTe₂ thin films grown by molecular beam epitaxy

En Li(李恩)¹, Rui-Zi Zhang(张瑞梓)¹, Hang Li(李航)¹, Chen Liu(刘晨)², Geng Li(李更)¹, Jia-Ou Wang(王嘉鸥)², Tian Qian(钱天)¹, Hong Ding(丁洪)¹, Yu-Yang Zhang(张余洋)¹, Shi-Xuan Du(杜世萱)¹, Xiao Lin(林晓)¹, Hong-Jun Gao(高鸿钧)¹

1 Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China;
2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received:2018-04-28 Revised:2018-05-04 Online:2018-08-05 Published:2018-08-05
Contact: Xiao Lin, Hong-Jun Gao E-mail:xlin@ucas.ac.cn;hjgao@iphy.ac.cn

摘要/Abstract

摘要：

PdTe₂, a member of layered transition metal dichalcogenides (TMDs), has aroused significant research interest due to the coexistence of superconductivity and type-Ⅱ Dirac fermions. It provides a promising platform to explore the interplay between superconducting quasiparticles and Dirac fermions. Moreover, PdTe₂ has also been used as a substrate for monolayer antimonene growth. Here in this paper, we report the epitaxial growth of high quality PdTe₂ films on bilayer graphene/SiC(0001) by molecular beam epitaxy (MBE). Atomically thin films are characterized by scanning tunneling microscopy (STM), X-ray photoemission spectroscopy (XPS), low-energy electron diffraction (LEED), and Raman spectroscopy. The band structure of 6-layer PdTe₂ film is measured by angle-resolved photoemission spectroscopy (ARPES). Moreover, our air exposure experiments show excellent chemical stability of epitaxial PdTe₂ film. High-quality PdTe₂ films provide opportunities to build antimonene/PdTe₂ heterostructure in ultrahigh vacuum for future applications in electronic and optoelectronic nanodevices.

关键词: two-dimensional materials, transition-metal dichalcogenides, PdTe₂, molecular beam epitaxy

Abstract:

Key words: two-dimensional materials, transition-metal dichalcogenides, PdTe₂, molecular beam epitaxy

中图分类号: (Scanning tunneling microscopy (including chemistry induced with STM))

68.37.Ef

68.55.-a (Thin film structure and morphology) 81.15.Hi (Molecular, atomic, ion, and chemical beam epitaxy) 61.05.jh (Low-energy electron diffraction (LEED) and reflection high-energy electron diffraction (RHEED))

李恩, 张瑞梓, 李航, 刘晨, 李更, 王嘉鸥, 钱天, 丁洪, 张余洋, 杜世萱, 林晓, 高鸿钧. High quality PdTe₂ thin films grown by molecular beam epitaxy[J]. 中国物理B, 2018, 27(8): 86804-086804.

En Li(李恩), Rui-Zi Zhang(张瑞梓), Hang Li(李航), Chen Liu(刘晨), Geng Li(李更), Jia-Ou Wang(王嘉鸥), Tian Qian(钱天), Hong Ding(丁洪), Yu-Yang Zhang(张余洋), Shi-Xuan Du(杜世萱), Xiao Lin(林晓), Hong-Jun Gao(高鸿钧). High quality PdTe₂ thin films grown by molecular beam epitaxy[J]. Chin. Phys. B, 2018, 27(8): 86804-086804.

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High quality PdTe₂ thin films grown by molecular beam epitaxy

High quality PdTe₂ thin films grown by molecular beam epitaxy

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