Evolution of electronic states in the Kondo alloy system Yb1-xLuxB12
Physical Review B - Condensed Matter and Materials Physics Volume 56 Issue 21
Page 13 727-13 720
published_at 1997-12-01
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| File | |
| Title ( eng ) |
Evolution of electronic states in the Kondo alloy system Yb1-xLuxB12
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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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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 56 |
| Issue | 21 |
| Start Page | 13 727 |
| End Page | 13 720 |
| 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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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 1997-12-01 |
| Rights |
Copyright (c) 1997 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0163-1829
[DOI] 10.1103/PhysRevB.56.13727
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.56.13727
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