Abstract:Valence-band electronic structure of YbXCu4 (X = In, Cd, Mg)
has been investigated by means of high-energy-resolution
photoemission spectroscopy with an He I resonance line (hν = 21.22 eV) from 10 to 300 K. In the photoemission spectra of
YbInCu4 and YbCdCu4 near the Fermi level (EF)
measured at 10 K, the prominent peak structures due to the
Yb2+ 4f7/2 states are clearly observed at 46 and
31 meV, respectively. The difference of the peak energies
qualitatively reflects that of the Kondo temperatures betw… Show more
“…They differ for both crystals. For PYN the main line shows a multiplet structure characteristic for Yb 3 + , which appears due to the Coulomb interaction between the 4d core hole and 4f electrons [17]. The lines are spread between 184 and 198.3 eV.…”
“…They differ for both crystals. For PYN the main line shows a multiplet structure characteristic for Yb 3 + , which appears due to the Coulomb interaction between the 4d core hole and 4f electrons [17]. The lines are spread between 184 and 198.3 eV.…”
“…YbCu 4 Mg with cubic MgCu 4 Sn type structure has intensively been studied within the whole series of YbCu 4 X (X ¼ Ag, Au, In, Cd, Tl, Mg) compounds [58,[116][117][118][119][120]. YbCu 4 Mg is a Kondo compound with a Kondo temperature of ca.…”
“…In addition, from the similar temperature dependence of the Yb 2+ 4f 7/2 peak observed in the photoemission spectra of YbAgCu 4 [12] and YbInCu 4 [13] measured at hν = 21.2 eV, YbAgCu 4 is also expected to have the electronic structure similar to YbInCu 4 . It is noted that the Ag, Cd, In and Sn atoms locate in this order in the periodic table.…”
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