Electron-Magnon Coupling and Nonlinear Tunneling Transport in Magnetic Nanoparticles
(2006) In Physical Review Letters 97(9).- Abstract
- We present a theory of single-electron tunneling transport through a ferromagnetic nanoparticle in which particle-hole excitations are coupled to spin collective modes. The model employed to describe the interaction between quasiparticles and collective excitations captures the salient features of a recent microscopic study. Our analysis of nonlinear quantum transport in the regime of weak coupling to the external electrodes is based on a rate-equation formalism for the nonequilibrium occupation probability of the nanoparticle many-body states. For strong electron-boson coupling, we find that the tunneling conductance as a function of bias voltage is characterized by a large and dense set of resonances. Their magnetic field dependence in... (More)
- We present a theory of single-electron tunneling transport through a ferromagnetic nanoparticle in which particle-hole excitations are coupled to spin collective modes. The model employed to describe the interaction between quasiparticles and collective excitations captures the salient features of a recent microscopic study. Our analysis of nonlinear quantum transport in the regime of weak coupling to the external electrodes is based on a rate-equation formalism for the nonequilibrium occupation probability of the nanoparticle many-body states. For strong electron-boson coupling, we find that the tunneling conductance as a function of bias voltage is characterized by a large and dense set of resonances. Their magnetic field dependence in the large-field regime is linear, with slopes of the same sign. Both features are in agreement with recent tunneling experiments. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/0bbaba9b-9a73-48cf-8bbf-6f33490d3d0d
- author
- Michalak, Lukasz LU ; Canali, Carlo and Benza, Vincenzo G.
- publishing date
- 2006-09-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 97
- issue
- 9
- article number
- 096804
- pages
- 4 pages
- publisher
- American Physical Society
- external identifiers
-
- scopus:33748288286
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.97.096804
- language
- English
- LU publication?
- no
- id
- 0bbaba9b-9a73-48cf-8bbf-6f33490d3d0d
- date added to LUP
- 2020-02-18 16:48:59
- date last changed
- 2022-02-01 03:40:47
@article{0bbaba9b-9a73-48cf-8bbf-6f33490d3d0d,
abstract = {{We present a theory of single-electron tunneling transport through a ferromagnetic nanoparticle in which particle-hole excitations are coupled to spin collective modes. The model employed to describe the interaction between quasiparticles and collective excitations captures the salient features of a recent microscopic study. Our analysis of nonlinear quantum transport in the regime of weak coupling to the external electrodes is based on a rate-equation formalism for the nonequilibrium occupation probability of the nanoparticle many-body states. For strong electron-boson coupling, we find that the tunneling conductance as a function of bias voltage is characterized by a large and dense set of resonances. Their magnetic field dependence in the large-field regime is linear, with slopes of the same sign. Both features are in agreement with recent tunneling experiments.}},
author = {{Michalak, Lukasz and Canali, Carlo and Benza, Vincenzo G.}},
issn = {{1079-7114}},
language = {{eng}},
month = {{09}},
number = {{9}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Electron-Magnon Coupling and Nonlinear Tunneling Transport in Magnetic Nanoparticles}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.97.096804}},
doi = {{10.1103/PhysRevLett.97.096804}},
volume = {{97}},
year = {{2006}},
}