Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy

H. Kumigashira; T. Sato; T. Yokoya; T. Takahashi; S. Yoshii; M. Kasaya

doi:10.1016/S0921-4526(99)00827-3

Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy

H. Kumigashira, T. Sato, T. Yokoya, T. Takahashi, S. Yoshii, M. Kasaya

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

We report an ultrahigh-resolution (ΔE to approximately 8 meV) temperature-dependent photoemission spectroscopy on the Kondo insulators CeRhAs and CeRhSb. We have observed a pseudogap at the Fermi level at low temperature for both compounds, which is gradually filled-in with increasing temperature. We found that the size of pseudogap is well scaled with the Kondo temperature (T_K) while the temperature evolution is dominated by another characteristic temperature much lower than T_K.

Original language	English
Pages (from-to)	284-285
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	281-282
DOIs	https://doi.org/10.1016/S0921-4526(99)00827-3
Publication status	Published - Jun 1 2000
Externally published	Yes
Event	Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn Duration: Aug 24 1999 → Aug 28 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(99)00827-3

Cite this

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title = "Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy",

abstract = "We report an ultrahigh-resolution (ΔE to approximately 8 meV) temperature-dependent photoemission spectroscopy on the Kondo insulators CeRhAs and CeRhSb. We have observed a pseudogap at the Fermi level at low temperature for both compounds, which is gradually filled-in with increasing temperature. We found that the size of pseudogap is well scaled with the Kondo temperature (TK) while the temperature evolution is dominated by another characteristic temperature much lower than TK.",

author = "H. Kumigashira and T. Sato and T. Yokoya and T. Takahashi and S. Yoshii and M. Kasaya",

note = "Funding Information: The authors are grateful to Prof. O. Sakai for useful discussion. H.K. and T.S. thank the Japan Society for Promotion of Science for financial support. This work was supported by a grant from the Ministry of Education, Science, Sports and Culture of Japan.; Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) ; Conference date: 24-08-1999 Through 28-08-1999",

year = "2000",

month = jun,

day = "1",

doi = "10.1016/S0921-4526(99)00827-3",

language = "English",

volume = "281-282",

pages = "284--285",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy

AU - Kumigashira, H.

AU - Sato, T.

AU - Yokoya, T.

AU - Takahashi, T.

AU - Yoshii, S.

AU - Kasaya, M.

N1 - Funding Information: The authors are grateful to Prof. O. Sakai for useful discussion. H.K. and T.S. thank the Japan Society for Promotion of Science for financial support. This work was supported by a grant from the Ministry of Education, Science, Sports and Culture of Japan.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - We report an ultrahigh-resolution (ΔE to approximately 8 meV) temperature-dependent photoemission spectroscopy on the Kondo insulators CeRhAs and CeRhSb. We have observed a pseudogap at the Fermi level at low temperature for both compounds, which is gradually filled-in with increasing temperature. We found that the size of pseudogap is well scaled with the Kondo temperature (TK) while the temperature evolution is dominated by another characteristic temperature much lower than TK.

AB - We report an ultrahigh-resolution (ΔE to approximately 8 meV) temperature-dependent photoemission spectroscopy on the Kondo insulators CeRhAs and CeRhSb. We have observed a pseudogap at the Fermi level at low temperature for both compounds, which is gradually filled-in with increasing temperature. We found that the size of pseudogap is well scaled with the Kondo temperature (TK) while the temperature evolution is dominated by another characteristic temperature much lower than TK.

UR - http://www.scopus.com/inward/record.url?scp=0033897863&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033897863&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(99)00827-3

DO - 10.1016/S0921-4526(99)00827-3

M3 - Conference article

AN - SCOPUS:0033897863

SN - 0921-4526

VL - 281-282

SP - 284

EP - 285

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)

Y2 - 24 August 1999 through 28 August 1999

ER -

Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy

Abstract

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