Spin-flip inelastic electron tunneling spectroscopy in atomic chains
File Type:
PDFItem Type:
Journal ArticleDate:
2011Citation:
Aaron Hurley, Nadjib Baadji, and Stefano Sanvito, Spin-flip inelastic electron tunneling spectroscopy in atomic chains, Physical Review B, 84, 3, 2011, 035427Download Item:
Spin-flip inelastic electron tunneling spectroscopy in atomic chains.pdf (Published (publisher's copy) - Peer Reviewed) 418.1Kb
Abstract:
We present a theoretical study of the spin transport properties of monoatomic magnetic chains with a focus on the spectroscopical features of the I - V curve associated with spin-flip processes. Our calculations are based on the s-d model for magnetism with the electron transport treated at the level of the nonequilibrium Green's function formalism. Inelastic spin-flip scattering processes are introduced perturbatively via the first Born approximation, and an expression for the associated self-energy is derived. The computational method is then applied to describe the I - V characteristics and its derivatives of one-dimensional chains of Mn atoms, and the results are then compared to available experimental data. We find a qualitative and quantitative agreement between the calculated and the experimental conductance spectra. Significantly we are able to describe the relative intensities of the spin excitation features in the I - V curve, by means of a careful analysis of the spin transition selection rules associated with the atomic chains.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
08/ERA/I1759
Irish Research Council for Science and Engineering Technology (IRCSET)
Author's Homepage:
http://people.tcd.ie/sanvitosDescription:
PUBLISHEDType of material:
Journal ArticleCollections:
Series/Report no:
Physical Review B84
3
Availability:
Full text availableSubject (TCD):
Nanoscience & MaterialsDOI:
http://dx.doi.org/10.1103/PhysRevB.84.035427Licences: