A physical limitation of the Wigner "distribution" function in molecular transport

• Verfasst von: Bâldea, Ioan [VerfasserIn]
• Verfasst von: Köppel, Horst [VerfasserIn]
• Titel: A physical limitation of the Wigner "distribution" function in molecular transport
• Verf.angabe: Ioan Bâldea, Horst Köppel
• E-Jahr: 2012
• Jahr: 29 March 2012
• Umfang: 2 S.
• Fussnoten: Available online 29 March 2012 ; Gesehen am 03.08.2018
• Titel Quelle: Enthalten in: Physics letters / A
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2012
• Band/Heft Quelle: 376(2012), 19, Seite 1645-1646
• ISSN Quelle: 1873-2429
• DOI: doi:10.1016/j.physleta.2012.03.054
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Molecular electronics
• Sach-SW: Nanotransport
• Sach-SW: Nonequilibrium phenomena
• Sach-SW: Wigner function
• K10plus-PPN: 1578249074

Abstract

We present an example revealing that the sign of the "momentum" P of the Wigner "distribution" function f(q,P) is not necessarily associated with the direction of motion in the real world. This aspect, which is not related to the well-known limitation of the Wigner function that traces back to the Heisenberg's uncertainty principle, is particularly relevant in transport studies, wherein it is helpful to distinguish between electrons flowing from electrodes into devices and vice versa.