We study the electronic transport of a quantum wire partly irradiated under an external terahertz (THz) electromagnetic field. Using the free-electron model and scattering matrix approach we demonstrate that although the electrons in a ballistic quantum wire only suffer from lateral collision with photons, the reflection of electrons also takes place. More interestingly there is a sharp step-structure in the transmission probability as the total energy of electron increases to a threshold value when the frequency of electromagnetic field is resonant with the separation of lateral levels of the wire. The interference structure of transmission for the system apparently appears when the field only irradiates the middle part of the wire.
部门归属
hunan normal univ, dept phys, changsha 410081, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;zhou, gh (reprint author), hunan normal univ, dept phys, changsha 410081, peoples r china
M. Yang,G. H. Zhou. Electronic transport for a quantum wire partly irradiated under THz electromagnetic wave[J]. Chinese Physics Letters,2003,20(6):901-904.
APA
M. Yang,&G. H. Zhou.(2003).Electronic transport for a quantum wire partly irradiated under THz electromagnetic wave.Chinese Physics Letters,20(6),901-904.
MLA
M. Yang,et al."Electronic transport for a quantum wire partly irradiated under THz electromagnetic wave".Chinese Physics Letters 20.6(2003):901-904.
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