The microscopic coexistence of superconductivity and ferromagnetism in UGe2: 73Ge-NMR/NQR study

H. Kotegawa; S. Kawasaki; A. Harada; Y. Kawasaki; K. Okamoto; G. Q. Zheng; Y. Kitaoka; E. Yamamoto; Y. Haga; Y. Onuki; K. M. Itoh; E. E. Haller

doi:10.1016/j.jmmm.2003.12.410

The microscopic coexistence of superconductivity and ferromagnetism in UGe₂: ⁷³Ge-NMR/NQR study

H. Kotegawa, S. Kawasaki, A. Harada, Y. Kawasaki, K. Okamoto, G. Q. Zheng, Y. Kitaoka, E. Yamamoto, Y. Haga, Y. Onuki, K. M. Itoh, E. E. Haller

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

3 Citations (Scopus)

Abstract

We report ⁷³Ge-NMR/NQR measurements on the itinerant ferromagnetic (FM) superconductor UGe₂ at P= 1.2GPa. The temperature (T) dependence of the nuclear spin lattice relaxation rate (1/T₁) at zero field has demonstrated the onset of the superconducting (SC) transition at T_c = 0.7 K. The lack of a coherence peak in 1/T₁ just below T_c, followed by a T³-like behavior, provide compelling evidence for the unconventional nature of the SC state that coexists with the FM state on a microscopic scale in UGe₂.

Original language	English
Pages (from-to)	e27-e28
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.410
Publication status	Published - May 2004
Externally published	Yes

Keywords

Ferromagnetism
NMR
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2003.12.410

Cite this

Kotegawa, H., Kawasaki, S., Harada, A., Kawasaki, Y., Okamoto, K., Zheng, G. Q., Kitaoka, Y., Yamamoto, E., Haga, Y., Onuki, Y., Itoh, K. M., & Haller, E. E. (2004). The microscopic coexistence of superconductivity and ferromagnetism in UGe₂: ⁷³Ge-NMR/NQR study. Journal of Magnetism and Magnetic Materials, 272-276(SUPPL. 1), e27-e28. https://doi.org/10.1016/j.jmmm.2003.12.410

Kotegawa, H, Kawasaki, S, Harada, A, Kawasaki, Y, Okamoto, K, Zheng, GQ, Kitaoka, Y, Yamamoto, E, Haga, Y, Onuki, Y, Itoh, KM & Haller, EE 2004, 'The microscopic coexistence of superconductivity and ferromagnetism in UGe₂: ⁷³Ge-NMR/NQR study', Journal of Magnetism and Magnetic Materials, vol. 272-276, no. SUPPL. 1, pp. e27-e28. https://doi.org/10.1016/j.jmmm.2003.12.410

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title = "The microscopic coexistence of superconductivity and ferromagnetism in UGe2: 73Ge-NMR/NQR study",

abstract = "We report 73Ge-NMR/NQR measurements on the itinerant ferromagnetic (FM) superconductor UGe2 at P= 1.2GPa. The temperature (T) dependence of the nuclear spin lattice relaxation rate (1/T1) at zero field has demonstrated the onset of the superconducting (SC) transition at Tc = 0.7 K. The lack of a coherence peak in 1/T1 just below Tc, followed by a T3-like behavior, provide compelling evidence for the unconventional nature of the SC state that coexists with the FM state on a microscopic scale in UGe2.",

keywords = "Ferromagnetism, NMR, Superconductivity",

author = "H. Kotegawa and S. Kawasaki and A. Harada and Y. Kawasaki and K. Okamoto and Zheng, {G. Q.} and Y. Kitaoka and E. Yamamoto and Y. Haga and Y. Onuki and Itoh, {K. M.} and Haller, {E. E.}",

note = "Funding Information: The authors thank K. Machida, N. Tateiwa and J. Flouquet for helpful discussions. This work was supported by the COE research Grant (10CE2004) from MEXT of Japan. One of authors (H.K.) has been supported by JSPS Research Fellowships for Young Scientists .",

year = "2004",

month = may,

doi = "10.1016/j.jmmm.2003.12.410",

language = "English",

volume = "272-276",

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T1 - The microscopic coexistence of superconductivity and ferromagnetism in UGe2

T2 - 73Ge-NMR/NQR study

AU - Kotegawa, H.

AU - Kawasaki, S.

AU - Harada, A.

AU - Kawasaki, Y.

AU - Okamoto, K.

AU - Zheng, G. Q.

AU - Kitaoka, Y.

AU - Yamamoto, E.

AU - Haga, Y.

AU - Onuki, Y.

AU - Itoh, K. M.

AU - Haller, E. E.

N1 - Funding Information: The authors thank K. Machida, N. Tateiwa and J. Flouquet for helpful discussions. This work was supported by the COE research Grant (10CE2004) from MEXT of Japan. One of authors (H.K.) has been supported by JSPS Research Fellowships for Young Scientists .

PY - 2004/5

Y1 - 2004/5

N2 - We report 73Ge-NMR/NQR measurements on the itinerant ferromagnetic (FM) superconductor UGe2 at P= 1.2GPa. The temperature (T) dependence of the nuclear spin lattice relaxation rate (1/T1) at zero field has demonstrated the onset of the superconducting (SC) transition at Tc = 0.7 K. The lack of a coherence peak in 1/T1 just below Tc, followed by a T3-like behavior, provide compelling evidence for the unconventional nature of the SC state that coexists with the FM state on a microscopic scale in UGe2.

AB - We report 73Ge-NMR/NQR measurements on the itinerant ferromagnetic (FM) superconductor UGe2 at P= 1.2GPa. The temperature (T) dependence of the nuclear spin lattice relaxation rate (1/T1) at zero field has demonstrated the onset of the superconducting (SC) transition at Tc = 0.7 K. The lack of a coherence peak in 1/T1 just below Tc, followed by a T3-like behavior, provide compelling evidence for the unconventional nature of the SC state that coexists with the FM state on a microscopic scale in UGe2.

KW - Ferromagnetism

KW - NMR

KW - Superconductivity

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