Work

Spin-Polarized Tunneling Spectroscopy in Tunnel Junctions with Half-Metallic Electrodes

Year: 2005

Type: article

Abstract: We have studied the magnetoresistance (TMR) of tunnel junctions with electrodes of La(2/3)Sr(1/3)MnO3 and we show how the variation of the conductance and TMR with the bias voltage can be exploited to obtain precise information on the spin and energy dependence of the density of states. Our analysis leads to a quantitative description of the band structure of La(2/3)Sr(1/3)MnO3 including the energy gap delta between the Fermi level and the bottom of the t(2g) minority-spin band, in good agreement with data from spin-polarized inverse photoemission experiments. This shows the potential of magnetic tunnel junctions with half-metallic electrodes for spin-resolved spectroscopic studies.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.95.137203

Authors: M. Bowen, A. Barthélémy, M. Bibes, E. Jacquet, J.-P. Contour, A. Fert, F. Ciccacci, L. Duò, R. Bertacco

Institutions: Centre National de la Recherche Scientifique, Laboratoire Albert Fert, Politecnico di Milano

Language: English

Topic: Magnetic and transport properties of perovskites and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2048433542

FWCI: 5.931

Cites: 20

Cited by: 88

Related to: 10