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http://hdl.handle.net/10397/5393
Title: | Landauer-Büttiker formula for time-dependent transport through resonant-tunneling structures : a nonequilibrium Green’s function approach | Authors: | You, JQ Lam, CH Zheng, HZ |
Issue Date: | 15-Jul-2000 | Source: | Physical review. B, Condensed matter and materials physics, 15 July 2000, v. 62, no. 3, p. 1978-1983 | Abstract: | A nonequilibrium Green’s-function formalism is employed to study the time-dependent transport through resonant-tunneling structures. With this formalism, we derive a time-dependent Landauer-Büttiker formula that guarantees current conservation and gauge invariance. Furthermore, we apply the formula to calculate the response behaviors of the resonant-tunneling structures in the presence of rectangular-pulse and harmonic-modulation fields. The results show that the displacement current plays the role of retarding the tunneling current. | Keywords: | Green's function methods Resonant tunnelling Current partition Conductance Systems |
Publisher: | American Physical Society | Journal: | Physical review. B, Condensed matter and materials physics | ISSN: | 1098-0121 | EISSN: | 1550-235X | DOI: | 10.1103/PhysRevB.62.1978 | Rights: | Physical Review B © 2000 The American Physical Society. The Journal's web site is located at http://prb.aps.org/ |
Appears in Collections: | Journal/Magazine Article |
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You_Landauer_Time-dependent_Transport.pdf | 88.43 kB | Adobe PDF | View/Open |
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