Pressure-induced antiferromagnetic superconductivity in CeNiGe3: A 73Ge-NQR study under pressure

A. Harada; S. Kawasaki; H. Mukuda; Y. Kitaoka; A. Thamizhavel; Y. Okuda; R. Settai; Y. Onuki; K. M. Itoh; E. E. Haller; H. Harima

doi:10.1016/j.jmmm.2006.10.883

Pressure-induced antiferromagnetic superconductivity in CeNiGe₃: A ⁷³Ge-NQR study under pressure

A. Harada, S. Kawasaki, H. Mukuda, Y. Kitaoka, A. Thamizhavel, Y. Okuda, R. Settai, Y. Onuki, K. M. Itoh, E. E. Haller, H. Harima

Department of Applied Physics and Physico-Informatics

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

5 Citations (Scopus)

Abstract

We report on antiferromagnetic (AF) properties of pressure-induced superconductivity in CeNiGe₃ via the ⁷³Ge nuclear-quadrupole-resonance (NQR) measurements under pressure (P). The NQR-spectrum measurements have revealed that the incommensurate antiferromagnetic ordering is robust against increasing P with the increase of ordered moment and ordering temperature. Nevertheless the measurements of nuclear spin-lattice relaxation rate (1 / T₁) have pointed to the onset of superconductivity as a consequence of Ce-4f electrons delocalized by applying P. The emergence of superconductivity under the development of AF order suggests that a novel type of superconducting mechanism works in this compound.

Original language	English
Pages (from-to)	614-616
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.2006.10.883
Publication status	Published - 2007 Mar

Keywords

Antiferromagnetism
CeNiGe
Heavy fermion
NQR under pressure
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2006.10.883

Cite this

@article{1a28660bb92a4f7fb985ef81f8f1ba0d,

title = "Pressure-induced antiferromagnetic superconductivity in CeNiGe3: A 73Ge-NQR study under pressure",

abstract = "We report on antiferromagnetic (AF) properties of pressure-induced superconductivity in CeNiGe3 via the 73Ge nuclear-quadrupole-resonance (NQR) measurements under pressure (P). The NQR-spectrum measurements have revealed that the incommensurate antiferromagnetic ordering is robust against increasing P with the increase of ordered moment and ordering temperature. Nevertheless the measurements of nuclear spin-lattice relaxation rate (1 / T1) have pointed to the onset of superconductivity as a consequence of Ce-4f electrons delocalized by applying P. The emergence of superconductivity under the development of AF order suggests that a novel type of superconducting mechanism works in this compound.",

keywords = "Antiferromagnetism, CeNiGe, Heavy fermion, NQR under pressure, Superconductivity",

author = "A. Harada and S. Kawasaki and H. Mukuda and Y. Kitaoka and A. Thamizhavel and Y. Okuda and R. Settai and Y. Onuki and Itoh, {K. M.} and Haller, {E. E.} and H. Harima",

note = "Funding Information: This work was supported by Grant-in-Aid for Creative Scientific Research (15GS0213), MEXT and the 21st Century COE Program supported by Japan Society of the Promotion of Science.",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.883",

language = "English",

volume = "310",

pages = "614--616",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "2 SUPPL. PART 1",

}

TY - JOUR

T1 - Pressure-induced antiferromagnetic superconductivity in CeNiGe3

T2 - A 73Ge-NQR study under pressure

AU - Harada, A.

AU - Kawasaki, S.

AU - Mukuda, H.

AU - Kitaoka, Y.

AU - Thamizhavel, A.

AU - Okuda, Y.

AU - Settai, R.

AU - Onuki, Y.

AU - Itoh, K. M.

AU - Haller, E. E.

AU - Harima, H.

N1 - Funding Information: This work was supported by Grant-in-Aid for Creative Scientific Research (15GS0213), MEXT and the 21st Century COE Program supported by Japan Society of the Promotion of Science.

PY - 2007/3

Y1 - 2007/3

N2 - We report on antiferromagnetic (AF) properties of pressure-induced superconductivity in CeNiGe3 via the 73Ge nuclear-quadrupole-resonance (NQR) measurements under pressure (P). The NQR-spectrum measurements have revealed that the incommensurate antiferromagnetic ordering is robust against increasing P with the increase of ordered moment and ordering temperature. Nevertheless the measurements of nuclear spin-lattice relaxation rate (1 / T1) have pointed to the onset of superconductivity as a consequence of Ce-4f electrons delocalized by applying P. The emergence of superconductivity under the development of AF order suggests that a novel type of superconducting mechanism works in this compound.

AB - We report on antiferromagnetic (AF) properties of pressure-induced superconductivity in CeNiGe3 via the 73Ge nuclear-quadrupole-resonance (NQR) measurements under pressure (P). The NQR-spectrum measurements have revealed that the incommensurate antiferromagnetic ordering is robust against increasing P with the increase of ordered moment and ordering temperature. Nevertheless the measurements of nuclear spin-lattice relaxation rate (1 / T1) have pointed to the onset of superconductivity as a consequence of Ce-4f electrons delocalized by applying P. The emergence of superconductivity under the development of AF order suggests that a novel type of superconducting mechanism works in this compound.

KW - Antiferromagnetism

KW - CeNiGe

KW - Heavy fermion

KW - NQR under pressure

KW - Superconductivity

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DO - 10.1016/j.jmmm.2006.10.883

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SN - 0304-8853

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SP - 614

EP - 616

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 1

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