摘要
Two-dimensional honeycomb crystals have inspired intense research interest for their novel properties and great potential in electronics and optoelectronics. Here, through molecular beam epitaxy on SrTiO_3(001), we report successful epitaxial growth of metal-rich chalcogenide Fe_(2)Te, a honeycomb-structured film that has no direct bulk analogue, under Te-limited growth conditions. The structural morphology and electronic properties of Fe_(2)Te are explored with scanning tunneling microscopy and angle resolved photoemission spectroscopy, which reveal electronic bands cross the Fermi level and nearly flat bands. Moreover, we find a weak interfacial interaction between Fe_(2)Te and the underlying substrates, paving a newly developed alternative avenue for honeycomb-based electronic devices.
作者
Jia-Qi Guan
Li Wang
Pengdong Wang
Wei Ren
Shuai Lu
Rong Huang
Fangsen Li
Can-Li Song
Xu-Cun Ma
Qi-Kun Xue
关佳其;王利;王鹏栋;任伟;卢帅;黄荣;李坊森;宋灿立;马旭村;薛其坤(State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China;Vacuum Interconnected Nanotech Workstation(Nano-X),Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO),Chinese Academy of Sciences,Suzhou 215123,China;Frontier Science Center for Quantum Information,Beijing 100084,China;Beijing Academy of Quantum Information Sciences,Beijing 100193,China;Southern University of Science and Technology,Shenzhen 518055,China)
基金
Supported by the National Natural Science Foundation of China (Grant Nos. 51788104, 11604366, 11774192, and 11634007)
the National Key R&D Program of China (Grant Nos. 2017YFA0304600 and 2018YFA0305603)。
