Chin. Phys. Lett.  2016, Vol. 33 Issue (05): 057301    DOI: 10.1088/0256-307X/33/5/057301
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Anisotropic Ballistic Transport through a Potential Barrier on Monolayer Phosphorene
Fang Cheng**, Bing He
Department of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410004
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Fang Cheng, Bing He 2016 Chin. Phys. Lett. 33 057301
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Abstract We demonstrate theoretically the anisotropic quantum transport of electrons through a single barrier on monolayer phosphorene. Using an effective ${\boldsymbol k}\cdot{\boldsymbol p}$ Hamiltonian, we find that the transmission probability for transport through n–n–n (or n–p-n) junction is an oscillating function of the incident angle, the barrier height, as well as the incident energy of electrons. The conductance in such systems depends sensitively on the transport direction due to the anisotropic effective mass. By tuning the Fermi energy and gate voltage, the channels can be transited from opaque to transparent, which provides us with an efficient way to control the transport of monolayer phosphorene-based microstructures.
Received: 22 February 2016      Published: 31 May 2016
PACS:  73.22.-f (Electronic structure of nanoscale materials and related systems)  
  73.63.-b (Electronic transport in nanoscale materials and structures)  
  68.65.-k (Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/33/5/057301       OR      https://cpl.iphy.ac.cn/Y2016/V33/I05/057301
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Fang Cheng
Bing He
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