73Ge-NMR study on magnetic fluctuations of ferromagnetic superconductor UGe2

Y. Noma; H. Kotegawa; T. Kubo; H. Tou; H. Harima; Y. Haga; E. Yamamoto; Y. Ōnuki; K. M. Itoh; E. E. Haller; A. Nakamura; Y. Homma; F. Honda; D. Aoki

doi:10.1016/j.physb.2017.10.023

⁷³Ge-NMR study on magnetic fluctuations of ferromagnetic superconductor UGe₂

Y. Noma, H. Kotegawa, T. Kubo, H. Tou, H. Harima, Y. Haga, E. Yamamoto, Y. Ōnuki, K. M. Itoh, E. E. Haller, A. Nakamura, Y. Homma, F. Honda, D. Aoki

Department of Applied Physics and Physico-Informatics

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

Abstract

We report ⁷³Ge-NMR measurement on the ferromagnetic superconductor UGe₂ at ambient pressure. The observed NMR spectrum supports that the electric field gradient at three inequivalent Ge sites is correctly deduced by a LDA calculation. The temperature dependences of the nuclear spin lattice relaxation rate 1/T₁ for H₀⊥a (easy axis) and H₀∥a were obtained for the oriented sample. The contrasting behavior in 1/T₁ for H₀⊥a and H₀∥a reveals that the magnetic fluctuation of UGe₂ is highly anisotropic.

Original language	English
Pages (from-to)	543-545
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	536
DOIs	https://doi.org/10.1016/j.physb.2017.10.023
Publication status	Published - 2018 May 1

Keywords

Ferromagnetic superconductor
Magnetic fluctuations
NMR
UGe

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2017.10.023

Cite this

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title = "73Ge-NMR study on magnetic fluctuations of ferromagnetic superconductor UGe2 ",

abstract = "We report 73Ge-NMR measurement on the ferromagnetic superconductor UGe2 at ambient pressure. The observed NMR spectrum supports that the electric field gradient at three inequivalent Ge sites is correctly deduced by a LDA calculation. The temperature dependences of the nuclear spin lattice relaxation rate 1/T1 for H0⊥a (easy axis) and H0∥a were obtained for the oriented sample. The contrasting behavior in 1/T1 for H0⊥a and H0∥a reveals that the magnetic fluctuation of UGe2 is highly anisotropic.",

keywords = "Ferromagnetic superconductor, Magnetic fluctuations, NMR, UGe",

author = "Y. Noma and H. Kotegawa and T. Kubo and H. Tou and H. Harima and Y. Haga and E. Yamamoto and Y. Ōnuki and Itoh, {K. M.} and Haller, {E. E.} and A. Nakamura and Y. Homma and F. Honda and D. Aoki",

note = "Funding Information: This work was supported by JPSJ KAKENHI Grant numbers 15H03689 , 15H05745 , 15H05885 (J-Physics), and 15H05882 (J-Physics). Publisher Copyright: {\textcopyright} 2017",

year = "2018",

month = may,

day = "1",

doi = "10.1016/j.physb.2017.10.023",

language = "English",

volume = "536",

pages = "543--545",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

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T1 - 73Ge-NMR study on magnetic fluctuations of ferromagnetic superconductor UGe2

AU - Noma, Y.

AU - Kotegawa, H.

AU - Kubo, T.

AU - Tou, H.

AU - Harima, H.

AU - Haga, Y.

AU - Yamamoto, E.

AU - Ōnuki, Y.

AU - Itoh, K. M.

AU - Haller, E. E.

AU - Nakamura, A.

AU - Homma, Y.

AU - Honda, F.

AU - Aoki, D.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - We report 73Ge-NMR measurement on the ferromagnetic superconductor UGe2 at ambient pressure. The observed NMR spectrum supports that the electric field gradient at three inequivalent Ge sites is correctly deduced by a LDA calculation. The temperature dependences of the nuclear spin lattice relaxation rate 1/T1 for H0⊥a (easy axis) and H0∥a were obtained for the oriented sample. The contrasting behavior in 1/T1 for H0⊥a and H0∥a reveals that the magnetic fluctuation of UGe2 is highly anisotropic.

AB - We report 73Ge-NMR measurement on the ferromagnetic superconductor UGe2 at ambient pressure. The observed NMR spectrum supports that the electric field gradient at three inequivalent Ge sites is correctly deduced by a LDA calculation. The temperature dependences of the nuclear spin lattice relaxation rate 1/T1 for H0⊥a (easy axis) and H0∥a were obtained for the oriented sample. The contrasting behavior in 1/T1 for H0⊥a and H0∥a reveals that the magnetic fluctuation of UGe2 is highly anisotropic.

KW - Ferromagnetic superconductor

KW - Magnetic fluctuations

KW - NMR

KW - UGe

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