EMPTY AND FILLED VALENCE-ELECTRON STATES OF LU TRANSITION-METAL COMPOUNDS – AN UV SPECTROSCOPY STUDY

@article{ ISI:A1994NJ75600010,
Author = {DUO, L and VAVASSORI, P and FINAZZI, M and BRAICOVICH, L and OLCESE, GL},
Title = {{EMPTY AND FILLED VALENCE-ELECTRON STATES OF LU TRANSITION-METAL
   COMPOUNDS - AN UV SPECTROSCOPY STUDY}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{1994}},
Volume = {{49}},
Number = {{15}},
Pages = {{10159-10165}},
Month = {{APR 15}},
Abstract = {{Ajoint uv-photoemission (hnu=21.2 and 40.8 eV) and inverse-photoemission
   (hnu=11-17 eV) spectroscopy investigation is reported on Lu and some
   Lu-transition-metal (M compounds, namely LuCo2, LuRh2, and Lu7Rh3
   focused on the Lu and the M d-derived filled and empty electron states.
   The analysis is performed by considering the substitution effects of a
   3d with a 4d M partner (LuCo2 VS LuRh2) and by changing the
   stoichiometry and structure within the Lu-Rh phase diagram (LuRh2 VS
   Lu7Rh3 vs pure Lu). In LuRh2 the electron states, both below and above
   the Fermi level (E(F)), appear at lower energy (i.e., more bounded) as
   compared to LuCo2. Lu7Rh3 shows a strong narrowing of the Rh d band
   below E(F), due to a strongly decreased Rh-Rh interaction whereas above
   E(F) a similarity with pure Lu at high-electron energies and a
   significant redistribution of the Rh 4d states are observed. A critical
   discussion of the results considering (i) the crystal structures and the
   atomic coordinations, and (ii) thermochemical estimations is performed.
   A comparison of the LuCo2 data with published theoretical results
   indicates that the d-derived empty electron states are appropriately
   described within a single-particle picture at variance with the d
   occupied states for which remarkable discrepancies between theory and
   experiment are found probably due to the larger radial extent and more
   pronounced delocalization of the antibonding empty states with respect
   to the filled states. Some general consequences of these effects will be
   discussed.}},
Publisher = {{AMERICAN PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{DUO, L (Corresponding Author), POLITECN MILAN,CESNEF,DIPARTIMENTO FIS,PIAZZA LEONARDO DA VINCI 32,I-20133 MILAN,ITALY.
   UNIV GENOA,INST CHIM FIS,I-16132 GENOA,ITALY.}},
DOI = {{10.1103/PhysRevB.49.10159}},
ISSN = {{0163-1829}},
Keywords-Plus = {{ULTRAVIOLET INVERSE-PHOTOEMISSION; LAVES PHASE-COMPOUNDS;
   MAGNETIC-PROPERTIES; ALLOYS; LUCO2; DENSITY; HEAT; YCO2}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Duo, Lamberto/N-9311-2014
   Finazzi, Marco/M-7401-2015
   Vavassori, Paolo/B-4299-2014
   }},
ORCID-Numbers = {{Finazzi, Marco/0000-0002-9197-3654
   Vavassori, Paolo/0000-0002-4735-6640
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{34}},
Times-Cited = {{9}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{3}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{NJ756}},
Unique-ID = {{ISI:A1994NJ75600010}},
DA = {{2020-12-22}},
}