Title

Magnetic Quantum Coherence Effect Inni4 Molecular Transistors

Keywords

Landauer formula; magnetic quantum tunneling; single molecule magnets

Abstract

We present a theoretical study of electron transport in Ni4 molecular transistors in the presence of Zeeman spin splitting and magnetic quantum coherence (MQC). The Zeeman interaction is extended along the leads which produces gaps in the energy spectrum which allow electron transport with spin polarized along a certain direction. We show that the coherent states in resonance with the spin up or down states in the leads induces an effective coupling between localized spin states and continuum spin states in the single molecule magnet and leads, respectively. We investigate the conductance at zero temperature as a function of the applied bias and magnetic field by means of the Landauer formula, and show that the MQC is responsible for the appearence of resonances. Accordingly, we name them MQC resonances. © 2014 IOP Publishing Ltd.

Publication Date

7-9-2014

Publication Title

Journal of Physics Condensed Matter

Volume

26

Issue

27

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/0953-8984/26/27/275302

Socpus ID

84902670025 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84902670025

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