by Suga, S, Sekiyama, A, Imada, S, Shigemoto, A, Yamasaki, A, Tsunekawa, M, Dallera, C, Braicovich, L, Lee, TL, Sakai, O, Ebihara, T and Onukis, Y
Abstract:
By use of high-resolution soft X-rays, intrinsic temperature dependences of bulk Yb 4f photoelectron spectra were obtained for fractured surfaces of high-purity YbAl3 single crystals. The spectra of not only bulk 4f(13) but also 4f(12) final states are analyzed by noncrossing approximation (NCA) calculation for the f(14), f(13), and f(12) initial states based on the single impurity Anderson model (SIAM). In order to consistently interpret the temperature dependences of both 4f(13) and 4f(12) final states, however, it is found that a constant set of parameters of the hybridization strength Delta, bare 4f energy epsilon(f) and electron correlation energy U-ff is insufficient. The limitation of SIAM is confirmed for YbAl3 and the importance of the Kondo lattice effects is suggested.
Reference:
Kondo lattice effects of YbAl3 suggested by temperature dependence of high-accuracy high-energy photoelectron spectroscopy (Suga, S, Sekiyama, A, Imada, S, Shigemoto, A, Yamasaki, A, Tsunekawa, M, Dallera, C, Braicovich, L, Lee, TL, Sakai, O, Ebihara, T and Onukis, Y), In JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, PHYSICAL SOC JAPAN, volume 74, 2005.
Bibtex Entry:
@article{ ISI:000233414100002,
Author = {Suga, S and Sekiyama, A and Imada, S and Shigemoto, A and Yamasaki, A
   and Tsunekawa, M and Dallera, C and Braicovich, L and Lee, TL and Sakai,
   O and Ebihara, T and Onukis, Y},
Title = {{Kondo lattice effects of YbAl3 suggested by temperature dependence of
   high-accuracy high-energy photoelectron spectroscopy}},
Journal = {{JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN}},
Year = {{2005}},
Volume = {{74}},
Number = {{11}},
Pages = {{2880-2884}},
Month = {{NOV}},
Abstract = {{By use of high-resolution soft X-rays, intrinsic temperature dependences
   of bulk Yb 4f photoelectron spectra were obtained for fractured surfaces
   of high-purity YbAl3 single crystals. The spectra of not only bulk
   4f(13) but also 4f(12) final states are analyzed by noncrossing
   approximation (NCA) calculation for the f(14), f(13), and f(12) initial
   states based on the single impurity Anderson model (SIAM). In order to
   consistently interpret the temperature dependences of both 4f(13) and
   4f(12) final states, however, it is found that a constant set of
   parameters of the hybridization strength Delta, bare 4f energy
   epsilon(f) and electron correlation energy U-ff is insufficient. The
   limitation of SIAM is confirmed for YbAl3 and the importance of the
   Kondo lattice effects is suggested.}},
Publisher = {{PHYSICAL SOC JAPAN}},
Address = {{YUSHIMA URBAN BUILDING 5F, 2-31-22 YUSHIMA, BUNKYO-KU, TOKYO, 113-0034,
   JAPAN}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Suga, S (Corresponding Author), Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan.
   Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan.
   Politecn Milan, Dipartimento Fis, INFM, I-20133 Milan, Italy.
   European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Tokyo Metropolitan Univ, Grad Sch Sci, Hachioji, Tokyo 1920397, Japan.
   Shizuoka Univ, Fac Sci, Dept Phys, Shizuoka 4228529, Japan.
   Osaka Univ, Grad Sch Sci, Dept Phys, Toyonaka, Osaka 5600043, Japan.}},
DOI = {{10.1143/JPSJ.74.2880}},
ISSN = {{0031-9015}},
Keywords = {{Kondo lattice effects; Kondo resonance; temperature dependence; 4f level
   shift; hybridization change; bulk electronic states; high resolution}},
Keywords-Plus = {{RESOLUTION RESONANCE PHOTOEMISSION; HEAVY FERMIONS; CE COMPOUNDS;
   STATES; SPECTRA; SYSTEMS; METALS; MODEL}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Multidisciplinary}},
Author-Email = {{suga@mp.es.osaka-u.ac.jp}},
ResearcherID-Numbers = {{Sekiyama, Akira/G-1851-2016
   Imada, Shin/F-1113-2014
   }},
ORCID-Numbers = {{Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{29}},
Times-Cited = {{64}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{20}},
Journal-ISO = {{J. Phys. Soc. Jpn.}},
Doc-Delivery-Number = {{985YF}},
Unique-ID = {{ISI:000233414100002}},
DA = {{2020-12-22}},
}

Categories:

Tags:

Comments are closed