Quantum Theory of Magnetoelectromotive Instability in Nanoelectromechanical Systems with Positive Differential Conductance

Znanstveni rad - Izvorni znanstveni rad

• Autor: Danko Radić
• Autor: Leonid Gorelik
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

We consider dc-electronic transport through a nanowire suspended between two normal-metal leads in the presence of an external magnetic field. We show the very mechanism through which such a system, whose stationary current-voltage characteristic is essentially characterized by positive differential conductance, becomes unstable with respect to an onset of self-excited oscillations in electrical transport and mechanical vibrations. The self-excitation mechanism is based on the correlation between the occupancy of the quantized spin-split electronic energy levels inside the nanowire and the velocity of the nanowire with the crucial influence of strong enough retardation effects in magnetomotive coupling coming from mechanical vibrations.

• Ključne riječi (engleski): quantum electromechanical systems (QNEMS); magnetoelectromotive instability; self-excited oscillations; tunneling
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review Letters
• Brojčani podaci: vol. 111, br. 18, 186802
• p-ISSN: 0031-9007
• e-ISSN: 1079-7114
• DOI: https://doi.org/10.1103/PhysRevLett.111.186802
• URN:NBN: urn:nbn:hr:217:709671
• Datum objave publikacije: 2013
• Projekt: Šifra: 119-1191458-1023; Naziv (hrvatski): Sustavi s prostornim i dimenzijskim ograničenjima: korelacije i spinski efekti; Voditelj: Amir Hamzić; Pravna nadležnost: Hrvatska; Financijer: MZOS; Linija financiranja: ZP
• URL dokumenta: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.111.186802
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (2013) by the American Physical Society. Received 13 March 2013; published 29 October 2013.
• Datum i vrijeme pohrane: 2019-11-26 21:09:33