Ru-Knight shift measurement in the superconducting state of Sr2 RuO4

K. Ishida; H. Mukuda; Y. Kitaoka; Z. Q. Mao; Fukazawa; Y. Maeno

doi:10.1016/S0304-8853(00)01053-2

Ru-Knight shift measurement in the superconducting state of Sr₂ RuO₄

K. Ishida, H. Mukuda, Y. Kitaoka, Z. Q. Mao, Fukazawa, Y. Maeno

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Abstract

Knight shift of ⁹⁹Ru (⁹⁹K) has been measured, in the superconducting (SC) state of Sr₂ RuO₄ with T_c ∼ 1.5 K. The spin component of ⁹⁹K is negative and approximately one order of magnitude larger than that of ¹⁷O Knight shift ( ¹⁷K) in the RuO₂ plane, indicating that the Ru site feels a stronger hyperfine field originating from Ru-4d electrons. ⁹⁹K parallel to the RuO₂ plane shows no change in the SC state, in agreement with the previous ¹⁷K results. The invariance of the spin susceptibility at both Ru and O sites in the SC state gives the decisive evidence that SC pairs are in the spin-triplet state with the SC d-vector perpendicular to the RuO₂ plane.

Original language	English (US)
Pages (from-to)	353-354
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	226-230
Issue number	PART I
DOIs	https://doi.org/10.1016/S0304-8853(00)01053-2
State	Published - 2001

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(00)01053-2

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@article{9ad06e79e00442279ae22808754db517,

title = "Ru-Knight shift measurement in the superconducting state of Sr2 RuO4",

abstract = "Knight shift of 99Ru (99K) has been measured, in the superconducting (SC) state of Sr2 RuO4 with Tc ∼ 1.5 K. The spin component of 99K is negative and approximately one order of magnitude larger than that of 17O Knight shift ( 17K) in the RuO2 plane, indicating that the Ru site feels a stronger hyperfine field originating from Ru-4d electrons. 99K parallel to the RuO2 plane shows no change in the SC state, in agreement with the previous 17K results. The invariance of the spin susceptibility at both Ru and O sites in the SC state gives the decisive evidence that SC pairs are in the spin-triplet state with the SC d-vector perpendicular to the RuO2 plane.",

author = "K. Ishida and H. Mukuda and Y. Kitaoka and Mao, {Z. Q.} and Fukazawa and Y. Maeno",

note = "Funding Information: This work was supported by the COE Research (10CE2004) in Grant-in-Aid for Scientific Research from the Ministry of Education, Sport, Science and Culture of Japan.",

year = "2001",

doi = "10.1016/S0304-8853(00)01053-2",

language = "English (US)",

volume = "226-230",

pages = "353--354",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "PART I",

}

TY - JOUR

T1 - Ru-Knight shift measurement in the superconducting state of Sr2 RuO4

AU - Ishida, K.

AU - Mukuda, H.

AU - Kitaoka, Y.

AU - Mao, Z. Q.

AU - Fukazawa,

AU - Maeno, Y.

N1 - Funding Information: This work was supported by the COE Research (10CE2004) in Grant-in-Aid for Scientific Research from the Ministry of Education, Sport, Science and Culture of Japan.

PY - 2001

Y1 - 2001

N2 - Knight shift of 99Ru (99K) has been measured, in the superconducting (SC) state of Sr2 RuO4 with Tc ∼ 1.5 K. The spin component of 99K is negative and approximately one order of magnitude larger than that of 17O Knight shift ( 17K) in the RuO2 plane, indicating that the Ru site feels a stronger hyperfine field originating from Ru-4d electrons. 99K parallel to the RuO2 plane shows no change in the SC state, in agreement with the previous 17K results. The invariance of the spin susceptibility at both Ru and O sites in the SC state gives the decisive evidence that SC pairs are in the spin-triplet state with the SC d-vector perpendicular to the RuO2 plane.

AB - Knight shift of 99Ru (99K) has been measured, in the superconducting (SC) state of Sr2 RuO4 with Tc ∼ 1.5 K. The spin component of 99K is negative and approximately one order of magnitude larger than that of 17O Knight shift ( 17K) in the RuO2 plane, indicating that the Ru site feels a stronger hyperfine field originating from Ru-4d electrons. 99K parallel to the RuO2 plane shows no change in the SC state, in agreement with the previous 17K results. The invariance of the spin susceptibility at both Ru and O sites in the SC state gives the decisive evidence that SC pairs are in the spin-triplet state with the SC d-vector perpendicular to the RuO2 plane.

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DO - 10.1016/S0304-8853(00)01053-2

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SN - 0304-8853

VL - 226-230

SP - 353

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - PART I

ER -

Ru-Knight shift measurement in the superconducting state of Sr₂ RuO₄

Abstract

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