Low-Energy Electronic Structure of the Kondo Insulator YbB12
Physical Review Letters Volume 77 Issue 20
Page 4269-4272
published_at 1996-11-11
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| File | |
| Title ( eng ) |
Low-Energy Electronic Structure of the Kondo Insulator YbB12
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| Creator |
Susaki Tomofumi
Sekiyama Akira
Kobayashi Kensuke
Mizokawa Takashi
Fujimori Atsushi
Tsunekawa Masanori
Muro Takayuki
Matsushita Tomohiro
Suga Shigemasa
Ishii Hiroyoshi
Hanyu Takaaki
Miyahara Tsuneaki
Iga Fumitoshi
Kasaya Mitsuo
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| Source Title |
Physical Review Letters
|
| Volume | 77 |
| Issue | 20 |
| Start Page | 4269 |
| End Page | 4272 |
| Abstract |
We have studied the low-energy electronic structure of a Kondo insulator YbB12 by high-resolution photoemission spectroscopy. A "Kondo peak" is observed ~25 meV below the Fermi level, which agrees well with the Kondo temperature, whereas the gap at the Fermi level is found much smaller, indicating that the magnetic properties at higher temperatures (>75 K) are indeed determined by the Kondo effect in spite of the gap formation at lower temperatures. A renormalized band picture is presented to describe the coexistence of the Kondo peak and the transport gap as well as the highly asymmetric line shape of the Kondo peak.
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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 | 1996-11-11 |
| Rights |
Copyright (c) 1996 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.77.4269
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.77.4269
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