Magnetic properties of heavy fermion system Ce1-x Gdx CoSi3

J. B. Hong; H. J. Oh; Y. S. Kwon

doi:10.1063/1.3076604

Magnetic properties of heavy fermion system Ce1-x Gdx CoSi3

J. B. Hong
, H. J. Oh
, Y. S. Kwon

Department of Physics and Chemistry

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

3 Scopus citations

Abstract

We have investigated magnetic properties of the heavy fermion system Ce1-x Gdx CoSi3 (0x1) via specific heat and electrical resistivity measurements. The specific heat shows antiferromagnetism at 9 K for GdCoSi3 (x=1.0). With increasing Ce concentration, TN linearly decreases and is suppressed at x=0.1. An anomalous hump in specific heat was found below the ordering temperature for x0.4. For x=0.1, non-Fermi-liquid behavior was found in electrical resistivity and -ln T divergence in C/T below 3 K. Our results indicate that x=0.1 is a quantum critical point.

Original language	English
Article number	07E122
Journal	Journal of Applied Physics
Volume	105
Issue number	7
DOIs	https://doi.org/10.1063/1.3076604
State	Published - 2009

Bibliographical note

Funding Information:
This work was performed for the Nuclear R&D Programs funded by the Ministry of Science & Technology (MOST) of Korea and was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MEST) (Nos. R01-2008-000-20586-0 and R01-2008-000-20586-0) and by the Korea Research Foundation grant funded by the Korean Government (No. KRF-2008-313-C00293).

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title = "Magnetic properties of heavy fermion system Ce1-x Gdx CoSi3",

abstract = "We have investigated magnetic properties of the heavy fermion system Ce1-x Gdx CoSi3 (0x1) via specific heat and electrical resistivity measurements. The specific heat shows antiferromagnetism at 9 K for GdCoSi3 (x=1.0). With increasing Ce concentration, TN linearly decreases and is suppressed at x=0.1. An anomalous hump in specific heat was found below the ordering temperature for x0.4. For x=0.1, non-Fermi-liquid behavior was found in electrical resistivity and -ln T divergence in C/T below 3 K. Our results indicate that x=0.1 is a quantum critical point.",

author = "Hong, \{J. B.\} and Oh, \{H. J.\} and Kwon, \{Y. S.\}",

note = "Funding Information: This work was performed for the Nuclear R\&D Programs funded by the Ministry of Science \& Technology (MOST) of Korea and was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MEST) (Nos. R01-2008-000-20586-0 and R01-2008-000-20586-0) and by the Korea Research Foundation grant funded by the Korean Government (No. KRF-2008-313-C00293).",

year = "2009",

doi = "10.1063/1.3076604",

language = "English",

volume = "105",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

number = "7",

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TY - JOUR

T1 - Magnetic properties of heavy fermion system Ce1-x Gdx CoSi3

AU - Hong, J. B.

AU - Oh, H. J.

AU - Kwon, Y. S.

N1 - Funding Information: This work was performed for the Nuclear R&D Programs funded by the Ministry of Science & Technology (MOST) of Korea and was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MEST) (Nos. R01-2008-000-20586-0 and R01-2008-000-20586-0) and by the Korea Research Foundation grant funded by the Korean Government (No. KRF-2008-313-C00293).

PY - 2009

Y1 - 2009

N2 - We have investigated magnetic properties of the heavy fermion system Ce1-x Gdx CoSi3 (0x1) via specific heat and electrical resistivity measurements. The specific heat shows antiferromagnetism at 9 K for GdCoSi3 (x=1.0). With increasing Ce concentration, TN linearly decreases and is suppressed at x=0.1. An anomalous hump in specific heat was found below the ordering temperature for x0.4. For x=0.1, non-Fermi-liquid behavior was found in electrical resistivity and -ln T divergence in C/T below 3 K. Our results indicate that x=0.1 is a quantum critical point.

AB - We have investigated magnetic properties of the heavy fermion system Ce1-x Gdx CoSi3 (0x1) via specific heat and electrical resistivity measurements. The specific heat shows antiferromagnetism at 9 K for GdCoSi3 (x=1.0). With increasing Ce concentration, TN linearly decreases and is suppressed at x=0.1. An anomalous hump in specific heat was found below the ordering temperature for x0.4. For x=0.1, non-Fermi-liquid behavior was found in electrical resistivity and -ln T divergence in C/T below 3 K. Our results indicate that x=0.1 is a quantum critical point.

UR - https://www.scopus.com/pages/publications/65249134493

U2 - 10.1063/1.3076604

DO - 10.1063/1.3076604

M3 - Article

AN - SCOPUS:65249134493

SN - 0021-8979

VL - 105

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

M1 - 07E122

ER -

Magnetic properties of heavy fermion system Ce1-x Gdx CoSi3

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