Anomalous duality of 4f electrons in filled skutterudite CeOs4Sb12

M. Matsunami; R. Eguchi; T. Kiss; K. Horiba; A. Chainani; M. Taguchi; K. Yamamoto; T. Togashi; S. Watanabe; X. Y. Wang; C. T. Chen; Y. Senba; H. Ohashi; H. Sugawara; H. Sato; H. Harima; S. Shin

doi:10.1103/PhysRevLett.102.036403

Anomalous duality of 4f electrons in filled skutterudite CeOs4Sb12

M. Matsunami, R. Eguchi, T. Kiss, K. Horiba, A. Chainani, M. Taguchi, K. Yamamoto, T. Togashi, S. Watanabe, X. Y. Wang, C. T. Chen, Y. Senba, H. Ohashi, H. Sugawara, H. Sato, H. Harima, S. Shin

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We study the electronic structure of the filled skutterudite CeOs4Sb12 using photoemission spectroscopy (PES). Soft x-ray excited Ce 3d-4f resonant PES confirms the existence of Ce 4f states at the Fermi level (EF). Temperature dependent high-resolution laser-PES spectra reveal a pseudogap formation around EF, which can be explained in terms of the hybridization gap. Simultaneously, a sharp feature is formed just above EF with decreasing temperature. The heavy-fermion-like specific heat is attributed to the occupation of this feature. The results identify the origin of the anomalous coexistence of heavy-fermion and pseudogap behavior in terms of a symmetry dependent hybridization.

Original language	English
Article number	036403
Journal	Physical Review Letters
Volume	102
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.102.036403
Publication status	Published - Jan 20 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.102.036403

Cite this

Matsunami, M., Eguchi, R., Kiss, T., Horiba, K., Chainani, A., Taguchi, M., Yamamoto, K., Togashi, T., Watanabe, S., Wang, X. Y., Chen, C. T., Senba, Y., Ohashi, H., Sugawara, H., Sato, H., Harima, H., & Shin, S. (2009). Anomalous duality of 4f electrons in filled skutterudite CeOs4Sb12. Physical Review Letters, 102(3), [036403]. https://doi.org/10.1103/PhysRevLett.102.036403

Anomalous duality of 4f electrons in filled skutterudite CeOs4Sb12. / Matsunami, M.; Eguchi, R.; Kiss, T.; Horiba, K.; Chainani, A.; Taguchi, M.; Yamamoto, K.; Togashi, T.; Watanabe, S.; Wang, X. Y.; Chen, C. T.; Senba, Y.; Ohashi, H.; Sugawara, H.; Sato, H.; Harima, H.; Shin, S.

In: Physical Review Letters, Vol. 102, No. 3, 036403, 20.01.2009.

Research output: Contribution to journal › Article › peer-review

@article{b7270553c79047b1a5e2808b222a2cba,

title = "Anomalous duality of 4f electrons in filled skutterudite CeOs4Sb12",

abstract = "We study the electronic structure of the filled skutterudite CeOs4Sb12 using photoemission spectroscopy (PES). Soft x-ray excited Ce 3d-4f resonant PES confirms the existence of Ce 4f states at the Fermi level (EF). Temperature dependent high-resolution laser-PES spectra reveal a pseudogap formation around EF, which can be explained in terms of the hybridization gap. Simultaneously, a sharp feature is formed just above EF with decreasing temperature. The heavy-fermion-like specific heat is attributed to the occupation of this feature. The results identify the origin of the anomalous coexistence of heavy-fermion and pseudogap behavior in terms of a symmetry dependent hybridization.",

author = "M. Matsunami and R. Eguchi and T. Kiss and K. Horiba and A. Chainani and M. Taguchi and K. Yamamoto and T. Togashi and S. Watanabe and Wang, {X. Y.} and Chen, {C. T.} and Y. Senba and H. Ohashi and H. Sugawara and H. Sato and H. Harima and S. Shin",

year = "2009",

month = jan,

day = "20",

doi = "10.1103/PhysRevLett.102.036403",

language = "English",

volume = "102",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Anomalous duality of 4f electrons in filled skutterudite CeOs4Sb12

AU - Matsunami, M.

AU - Eguchi, R.

AU - Kiss, T.

AU - Horiba, K.

AU - Chainani, A.

AU - Taguchi, M.

AU - Yamamoto, K.

AU - Togashi, T.

AU - Watanabe, S.

AU - Wang, X. Y.

AU - Chen, C. T.

AU - Senba, Y.

AU - Ohashi, H.

AU - Sugawara, H.

AU - Sato, H.

AU - Harima, H.

AU - Shin, S.

PY - 2009/1/20

Y1 - 2009/1/20

N2 - We study the electronic structure of the filled skutterudite CeOs4Sb12 using photoemission spectroscopy (PES). Soft x-ray excited Ce 3d-4f resonant PES confirms the existence of Ce 4f states at the Fermi level (EF). Temperature dependent high-resolution laser-PES spectra reveal a pseudogap formation around EF, which can be explained in terms of the hybridization gap. Simultaneously, a sharp feature is formed just above EF with decreasing temperature. The heavy-fermion-like specific heat is attributed to the occupation of this feature. The results identify the origin of the anomalous coexistence of heavy-fermion and pseudogap behavior in terms of a symmetry dependent hybridization.

AB - We study the electronic structure of the filled skutterudite CeOs4Sb12 using photoemission spectroscopy (PES). Soft x-ray excited Ce 3d-4f resonant PES confirms the existence of Ce 4f states at the Fermi level (EF). Temperature dependent high-resolution laser-PES spectra reveal a pseudogap formation around EF, which can be explained in terms of the hybridization gap. Simultaneously, a sharp feature is formed just above EF with decreasing temperature. The heavy-fermion-like specific heat is attributed to the occupation of this feature. The results identify the origin of the anomalous coexistence of heavy-fermion and pseudogap behavior in terms of a symmetry dependent hybridization.

UR - http://www.scopus.com/inward/record.url?scp=59549103620&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=59549103620&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.102.036403

DO - 10.1103/PhysRevLett.102.036403

M3 - Article

AN - SCOPUS:59549103620

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

M1 - 036403

ER -

Anomalous duality of 4f electrons in filled skutterudite CeOs4Sb12

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this