Electronic structure of CeNiGe2 - x Six studied by Ce 4 d - 4 f resonant photoemission

H. J. Im; Takahiro Ito; Shin ichi Kimura; Hyeong Do Kim; J. B. Hong; Y. S. Kwon

doi:10.1016/j.jmmm.2006.10.512

Electronic structure of CeNiGe_{2 - x} Si_x studied by Ce 4 d - 4 f resonant photoemission

H. J. Im, Takahiro Ito, Shin ichi Kimura, Hyeong Do Kim, J. B. Hong, Y. S. Kwon

Department of Physics and Chemistry

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

2 Scopus citations

Abstract

We have performed Ce 4 d - 4 f resonant photoemission (RPE) spectroscopy on the isostructural heavy fermion system CeNiGe_{2 - x} Si_x(0 ≤ x ≤ 1) . With increasing x, the unit volume decreases by about 5% and the ground state originating in Ce 4f character varies from an antiferromagnetic regime (AFM, 0 ≤ x ≤ 0.8) to a quantum critical point (QCP, x = 1). RPE data reveals that the cf-hybridization intensity becomes stronger as the ground state of Ce 4f electron changes from AFM to QCP, which is exclusively caused by the increase of chemical pressure due to the reduction of lattice constant in CeNiGe_{2 - x} Si_x system.

Original language	English
Pages (from-to)	411-413
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.512
State	Published - Mar 2007

Bibliographical note

Funding Information:
This work was performed with the joint studies program of the Institute for Molecular Science (2005) and was partly supported by the Korea Science and Engineering Foundation through the Center for Strongly Correlated Materials Research (CSCMR) at Seoul National University, by Grant no. R01-2003-000-10095-0.

Keywords

CeNiGe Si
Resonant photoemission
cf-hybridization

Access to Document

10.1016/j.jmmm.2006.10.512

Cite this

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title = "Electronic structure of CeNiGe2 - x Six studied by Ce 4 d - 4 f resonant photoemission",

abstract = "We have performed Ce 4 d - 4 f resonant photoemission (RPE) spectroscopy on the isostructural heavy fermion system CeNiGe2 - x Six(0 ≤ x ≤ 1) . With increasing x, the unit volume decreases by about 5% and the ground state originating in Ce 4f character varies from an antiferromagnetic regime (AFM, 0 ≤ x ≤ 0.8) to a quantum critical point (QCP, x = 1). RPE data reveals that the cf-hybridization intensity becomes stronger as the ground state of Ce 4f electron changes from AFM to QCP, which is exclusively caused by the increase of chemical pressure due to the reduction of lattice constant in CeNiGe2 - x Six system.",

keywords = "CeNiGe Si, Resonant photoemission, cf-hybridization",

author = "Im, {H. J.} and Takahiro Ito and Kimura, {Shin ichi} and Kim, {Hyeong Do} and Hong, {J. B.} and Kwon, {Y. S.}",

note = "Funding Information: This work was performed with the joint studies program of the Institute for Molecular Science (2005) and was partly supported by the Korea Science and Engineering Foundation through the Center for Strongly Correlated Materials Research (CSCMR) at Seoul National University, by Grant no. R01-2003-000-10095-0.",

year = "2007",

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doi = "10.1016/j.jmmm.2006.10.512",

language = "English",

volume = "310",

pages = "411--413",

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T1 - Electronic structure of CeNiGe2 - x Six studied by Ce 4 d - 4 f resonant photoemission

AU - Im, H. J.

AU - Ito, Takahiro

AU - Kimura, Shin ichi

AU - Kim, Hyeong Do

AU - Hong, J. B.

AU - Kwon, Y. S.

N1 - Funding Information: This work was performed with the joint studies program of the Institute for Molecular Science (2005) and was partly supported by the Korea Science and Engineering Foundation through the Center for Strongly Correlated Materials Research (CSCMR) at Seoul National University, by Grant no. R01-2003-000-10095-0.

PY - 2007/3

Y1 - 2007/3

N2 - We have performed Ce 4 d - 4 f resonant photoemission (RPE) spectroscopy on the isostructural heavy fermion system CeNiGe2 - x Six(0 ≤ x ≤ 1) . With increasing x, the unit volume decreases by about 5% and the ground state originating in Ce 4f character varies from an antiferromagnetic regime (AFM, 0 ≤ x ≤ 0.8) to a quantum critical point (QCP, x = 1). RPE data reveals that the cf-hybridization intensity becomes stronger as the ground state of Ce 4f electron changes from AFM to QCP, which is exclusively caused by the increase of chemical pressure due to the reduction of lattice constant in CeNiGe2 - x Six system.

AB - We have performed Ce 4 d - 4 f resonant photoemission (RPE) spectroscopy on the isostructural heavy fermion system CeNiGe2 - x Six(0 ≤ x ≤ 1) . With increasing x, the unit volume decreases by about 5% and the ground state originating in Ce 4f character varies from an antiferromagnetic regime (AFM, 0 ≤ x ≤ 0.8) to a quantum critical point (QCP, x = 1). RPE data reveals that the cf-hybridization intensity becomes stronger as the ground state of Ce 4f electron changes from AFM to QCP, which is exclusively caused by the increase of chemical pressure due to the reduction of lattice constant in CeNiGe2 - x Six system.

KW - CeNiGe Si

KW - Resonant photoemission

KW - cf-hybridization

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