Magnetic circular dichroism in x-ray resonant Raman scattering in perpendicular geometry from CoFe2O4 and Co metal: A comparison of valence and inner-shell channels

@article{ ISI:000179611700079,
Author = {Braicovich, L and van der Laan, G and Ghiringhelli, G and Tagliaferri, A
   and Brookes, NB},
Title = {{Magnetic circular dichroism in x-ray resonant Raman scattering in
   perpendicular geometry from CoFe2O4 and Co metal: A comparison of
   valence and inner-shell channels}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2002}},
Volume = {{66}},
Number = {{17}},
Month = {{NOV 1}},
Abstract = {{We present results on resonant Raman scattering (RRS) in perpendicular
   geometry excited with circularly polarized x rays at the Co L-3,L-2
   edges in CoFe2O4 (Co ferrite) and Co metal. In this geometry the
   incident x-ray beam is perpendicular to the magnetization and the
   magnetic dichroism is only present in the RRS and not in the absorption.
   We compare the 3s-RRS channel terminating in an inner shell 3s hole and
   extra 3d electron (2p(6)3d(n)-->2p(5)3d(n+1)-->2p(6)3s(1)3d(n+1)) and
   the 3d-RRS channel ending in a 3d electron-hole pair
   (2p(6)3d(n)-->2p(5)3d(n+1)-->2p(6)3d(n)). The work is based on the
   measurement of the spectra vs the incident photon energy and integrated
   over the scattered photon energy. In both samples the dichroism of the
   inner-shell channel is about an order of magnitude larger than that of
   the valence channel. The result is explained by a theory based on the
   fast-collision approximation. We show that this theory provides a
   general way to choose the optimum scattering channel in the study of
   magnetic dichroism in perpendicular geometry. The impact of the results
   is briefly discussed.}},
Publisher = {{AMERICAN PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Braicovich, L (Corresponding Author), Politecn Milan, INFM, Dipartimento Fis, P Leonardo da Vinci 32, I-20133 Milan, Italy.
   Politecn Milan, INFM, Dipartimento Fis, I-20133 Milan, Italy.
   SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
   European Synchrotron Radiat Facil, F-38043 Grenoble, France.}},
DOI = {{10.1103/PhysRevB.66.174435}},
Article-Number = {{174435}},
ISSN = {{1098-0121}},
Keywords-Plus = {{EMISSION-SPECTROSCOPY; HELICAL UNDULATOR; HOLE POLARIZATION; SUM-RULES;
   PHOTOEMISSION; ABSORPTION; FE; IRON}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Tagliaferri, Alberto/L-2903-2015
   Brookes, Nicholas B/C-6718-2019
   Ghiringhelli, Giacomo/D-1159-2014
   van der Laan, Gerrit/Q-1662-2015
   }},
ORCID-Numbers = {{Tagliaferri, Alberto/0000-0001-8001-1786
   Brookes, Nicholas B/0000-0002-1342-9530
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   van der Laan, Gerrit/0000-0001-6852-2495
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{27}},
Times-Cited = {{12}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{5}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{621VL}},
Unique-ID = {{ISI:000179611700079}},
DA = {{2020-12-22}},
}