Spin-dependent on-site electron correlations and localization in itinerant ferromagnets

R. Gotter; G. Fratesi; Robert Bartynski; F. Da Pieve; F. Offi; A. Ruocco; S. Ugenti; M. I. Trioni; G. P. Brivio; G. Stefani

doi:10.1103/PhysRevLett.109.126401

Spin-dependent on-site electron correlations and localization in itinerant ferromagnets

R. Gotter, G. Fratesi, Robert Bartynski, F. Da Pieve, F. Offi, A. Ruocco, S. Ugenti, M. I. Trioni, G. P. Brivio, G. Stefani

School of Arts and Sciences, Physics & Astronomy

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Spin selectivity in angle-resolved Auger photoelectron coincidence spectroscopy (AR-APECS) is used to probe electron correlation in ferromagnetic thin films. In particular, exploiting the AR-APECS capability to discriminate Auger electron emission events characterized by valence hole pairs created either in the high or in the low total spin state, a strong correlation effect in the Fe M _2,3VV Auger line shape (measured in coincidence with the Fe 3p photoelectrons) of Fe/Cu(001) thin films is detected and ascribed to interactions within the majority spin subband. Such an assignment follows from a close comparison of the experimental AR-APECS line shapes with the predictions of a model based on spin polarized density functional theory and the Cini-Sawatzky approach.

Original language	English (US)
Article number	126401
Journal	Physical review letters
Volume	109
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.109.126401
State	Published - Sep 17 2012

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.109.126401

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title = "Spin-dependent on-site electron correlations and localization in itinerant ferromagnets",

abstract = "Spin selectivity in angle-resolved Auger photoelectron coincidence spectroscopy (AR-APECS) is used to probe electron correlation in ferromagnetic thin films. In particular, exploiting the AR-APECS capability to discriminate Auger electron emission events characterized by valence hole pairs created either in the high or in the low total spin state, a strong correlation effect in the Fe M 2,3VV Auger line shape (measured in coincidence with the Fe 3p photoelectrons) of Fe/Cu(001) thin films is detected and ascribed to interactions within the majority spin subband. Such an assignment follows from a close comparison of the experimental AR-APECS line shapes with the predictions of a model based on spin polarized density functional theory and the Cini-Sawatzky approach.",

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AU - Gotter, R.

AU - Fratesi, G.

AU - Bartynski, Robert

AU - Da Pieve, F.

AU - Offi, F.

AU - Ruocco, A.

AU - Ugenti, S.

AU - Trioni, M. I.

AU - Brivio, G. P.

AU - Stefani, G.

PY - 2012/9/17

Y1 - 2012/9/17

N2 - Spin selectivity in angle-resolved Auger photoelectron coincidence spectroscopy (AR-APECS) is used to probe electron correlation in ferromagnetic thin films. In particular, exploiting the AR-APECS capability to discriminate Auger electron emission events characterized by valence hole pairs created either in the high or in the low total spin state, a strong correlation effect in the Fe M 2,3VV Auger line shape (measured in coincidence with the Fe 3p photoelectrons) of Fe/Cu(001) thin films is detected and ascribed to interactions within the majority spin subband. Such an assignment follows from a close comparison of the experimental AR-APECS line shapes with the predictions of a model based on spin polarized density functional theory and the Cini-Sawatzky approach.

AB - Spin selectivity in angle-resolved Auger photoelectron coincidence spectroscopy (AR-APECS) is used to probe electron correlation in ferromagnetic thin films. In particular, exploiting the AR-APECS capability to discriminate Auger electron emission events characterized by valence hole pairs created either in the high or in the low total spin state, a strong correlation effect in the Fe M 2,3VV Auger line shape (measured in coincidence with the Fe 3p photoelectrons) of Fe/Cu(001) thin films is detected and ascribed to interactions within the majority spin subband. Such an assignment follows from a close comparison of the experimental AR-APECS line shapes with the predictions of a model based on spin polarized density functional theory and the Cini-Sawatzky approach.

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