Strain-modulation of spin-dependent transport in graphene

Autor:	Yan-Fu Cheng, Zhen-Zhou Cao, Guan-Qiang Li, Jin Hou
Rok vydání:	2014
Předmět:	Physics Amplitude modulation Physics and Astronomy (miscellaneous) Condensed matter physics Modulation Graphene law Electron optics Transfer-matrix method (optics) Conductance Electron Electron transport chain law.invention
Zdroj:	Applied Physics Letters. 105:172407
ISSN:	1077-3118 0003-6951
Popis:	We investigate strain modulation of the spin-dependent electron transport in a graphene junction using the transfer matrix method. As an analogy to optics, we define the modulation depth in the electron optics domain. Additionally, we discuss the transport properties and show that the modulation depth and the conductance depend on the spin-orbit coupling strength, the strain magnitude, the width of the strained area, and the energy of the incident electron. The conductances of the spin-down and spin-up electrons have opposite and symmetrical variations, which results in the analogous features of their modulation depths. The maximum conditions for both the modulation depth and the electron spin upset rate are also analyzed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::96e61e4f823a0c8b3cf12ac324b4170f https://doi.org/10.1063/1.4900837 Zobrazit plný text záznamu