Evolution of electronic states in the Kondo alloy system Yb1-xLuxB12
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00018729
ID | 18729 |
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creator |
Susaki, Tomofumi
Konishi, Takehisa
Sekiyama, Akira
Mizokawa, Takashi
Fujimori, Atsushi
Iwasaki, Takeshi
Ueda, Shigenori
Matsushita, Tomohiro
Suga, Shigemasa
Ishii, Hiroyoshi
Iga, Fumitoshi
Kasaya, Mitsuo
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abstract | We have studied the effect of Lu substitution on the Kondo insulator YbB12 by high-resolution photoemission. Comparison of the spectra of YbB12, Yb0.5Lu0.5B12, and LuB12 reveals that the density of states (DOS) of the B sp-derived conduction band near the Fermi level is reduced in YbB12 over a rather wide (∼ 40 meV) energy region. Lu substitution (i) recovers the reduced B sp DOS, (ii) shifts the Yb 4f-derived Kondo peak towards higher binding energy, and (iii) decreases the Yb valence. These results are consistently analyzed using the Anderson-impurity model, and imply interaction between the Yb 4f ions mediated by the Yb 4f-B sp hybridization in YbB12.
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journal title |
Physical Review B - Condensed Matter and Materials Physics
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volume | Volume 56
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issue | Issue 21
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start page | 13 727
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end page | 13 720
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date of issued | 1997-12-01
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publisher | American Physical Society
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issn | 0163-1829
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publisher doi | |
language |
eng
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nii type |
Journal Article
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HU type |
Journal Articles
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DCMI type | text
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format | application/pdf
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text version | publisher
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rights | Copyright (c) 1997 American Physical Society.
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relation url | |
department |
Graduate School of Advanced Sciences of Matter
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