by Amorese, A., Caroca-Canales, N., Seiro, S., Krellner, C. and Ghiringhelli, G., Brookes, N. B., Vyalikh, D. V., Geibel, C. and Kummer, K.
Abstract:
Themagnetic properties of rare earth compounds are usually well captured by assuming a fully localized f shell and only considering the Hund’s rule ground state multiplet split by a crystal electric field (CEF). Currently, the standard technique for probing CEF excitations in lanthanides is inelastic neutron scattering. Here we show that with the recent leap in energy resolution, resonant inelastic soft x-ray scattering (RIXS) has become an attractive alternative for looking at CEF excitations. This has been used for studying the CEF scheme in CeRh2Si2, a system that has been investigated intensely for more than two decades now but for which no consensus has been reached yet as to its CEF scheme. Using high energy resolution of about 30 meV as well as polarization analysis in the scattered beam, both features that have become available only very recently in RIXS, allowed us to find a unique CEF description for CeRh2Si2. The result agrees well with previous inelastic neutron scattering and magnetic susceptibility studies. Due to its strong resonant character, RIXS is applicable to very small samples, presents very high cross sections for all lanthanides, and further benefits from the very weak coupling to phonon excitations. The foreseeable further progress in energy resolution will make this technique increasingly attractive for the investigation of the CEF scheme in lanthanides.
Reference:
Crystal electric field in CeRh2Si2 studied with high-resolution resonant inelastic soft x-ray scattering (Amorese, A., Caroca-Canales, N., Seiro, S., Krellner, C. and Ghiringhelli, G., Brookes, N. B., Vyalikh, D. V., Geibel, C. and Kummer, K.), In PHYSICAL REVIEW B, AMER PHYSICAL SOC, volume 97, 2018.
Bibtex Entry:
@article{ ISI:000435545100003,
Author = {Amorese, A. and Caroca-Canales, N. and Seiro, S. and Krellner, C. and
   Ghiringhelli, G. and Brookes, N. B. and Vyalikh, D. V. and Geibel, C.
   and Kummer, K.},
Title = {{Crystal electric field in CeRh2Si2 studied with high-resolution resonant
   inelastic soft x-ray scattering}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2018}},
Volume = {{97}},
Number = {{24}},
Month = {{JUN 19}},
Abstract = {{Themagnetic properties of rare earth compounds are usually well captured
   by assuming a fully localized f shell and only considering the Hund's
   rule ground state multiplet split by a crystal electric field (CEF).
   Currently, the standard technique for probing CEF excitations in
   lanthanides is inelastic neutron scattering. Here we show that with the
   recent leap in energy resolution, resonant inelastic soft x-ray
   scattering (RIXS) has become an attractive alternative for looking at
   CEF excitations. This has been used for studying the CEF scheme in
   CeRh2Si2, a system that has been investigated intensely for more than
   two decades now but for which no consensus has been reached yet as to
   its CEF scheme. Using high energy resolution of about 30 meV as well as
   polarization analysis in the scattered beam, both features that have
   become available only very recently in RIXS, allowed us to find a unique
   CEF description for CeRh2Si2. The result agrees well with previous
   inelastic neutron scattering and magnetic susceptibility studies. Due to
   its strong resonant character, RIXS is applicable to very small samples,
   presents very high cross sections for all lanthanides, and further
   benefits from the very weak coupling to phonon excitations. The
   foreseeable further progress in energy resolution will make this
   technique increasingly attractive for the investigation of the CEF
   scheme in lanthanides.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Kummer, K (Corresponding Author), European Synchrotron Radiat Facil, 71 Ave Martyrs,CS40220, F-38043 Grenoble 9, France.
   Amorese, A.; Brookes, N. B.; Kummer, K., European Synchrotron Radiat Facil, 71 Ave Martyrs,CS40220, F-38043 Grenoble 9, France.
   Caroca-Canales, N.; Seiro, S.; Geibel, C., Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany.
   Seiro, S., IFW Dresden, Inst Solid State Phys, Helmholtzstr 20, D-01069 Dresden, Germany.
   Krellner, C., Goethe Univ Frankfurt, Kristall & Mat Lab, Phys Inst, Max von Laue Stasse 1, D-60438 Frankfurt, Germany.
   Ghiringhelli, G., Politecn Milan, CNR SPIN, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy.
   Ghiringhelli, G., Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy.
   Vyalikh, D. V., DIPC, Dept Fis Mat, San Sebastian 20080, Spain.
   Vyalikh, D. V., CFM MPC UPV EHU, San Sebastian 20080, Spain.
   Vyalikh, D. V., Basque Fdn Sci, Ikerbasque, Bilbao 48011, Spain.}},
DOI = {{10.1103/PhysRevB.97.245130}},
Article-Number = {{245130}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{MAGNETIC-PROPERTIES; PRESSURE; SUPERCONDUCTIVITY; EXCITATIONS}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
Author-Email = {{kurt.kummer@esrf.fr}},
ResearcherID-Numbers = {{Ghiringhelli, Giacomo/D-1159-2014
   Krellner, Cornelius/A-5389-2009
   Amorese, Andrea/AAA-7510-2020
   Brookes, Nicholas B/C-6718-2019
   }},
ORCID-Numbers = {{Ghiringhelli, Giacomo/0000-0003-0867-7748
   Krellner, Cornelius/0000-0002-0671-7729
   Brookes, Nicholas B/0000-0002-1342-9530
   Amorese, Andrea/0000-0003-0271-0543}},
Funding-Acknowledgement = {{German Research Foundation (DFG)German Research Foundation (DFG) {[}GE
   602/4-1, KR 3831/5-1]; Fermi-NEst}},
Funding-Text = {{We would like thank O. Isnard, G. van der Laan, L. H. Tjeng, and A.
   Severing for valuable discussions, I. P. Makarova for providing us with
   the Ce<SUP>4+</SUP> reference sample, and L. Braicovich for his work on
   the polarimeter and help with using it. This work was supported by the
   German Research Foundation (DFG) through Grant Nos. GE 602/4-1, KR
   3831/5-1 and Fermi-NEst.}},
Number-of-Cited-References = {{35}},
Times-Cited = {{5}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{27}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{GJ7DK}},
Unique-ID = {{ISI:000435545100003}},
OA = {{Green Published}},
DA = {{2020-12-22}},
}

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