27Al NMR studies of NpPd5Al2

H. Chudo; H. Sakai; Y. Tokunaga; S. Kambe; D. Aoki; Y. Homma; Y. Shiokawa; Y. Haga; S. Ikeda; T. D. Matsuda; Y. Onuki; H. Yasuoka

doi:10.1016/j.physb.2009.07.072

²⁷Al NMR studies of NpPd₅Al₂

H. Chudo, H. Sakai, Y. Tokunaga, S. Kambe, D. Aoki, Y. Homma, Y. Shiokawa, Y. Haga, S. Ikeda, T. D. Matsuda, Y. Onuki, H. Yasuoka

IMR - Materials Processing and Characterization Division

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

2 Citations (Scopus)

Abstract

We present ²⁷Al NMR studies for a single crystal of the Np-based superconductor NpPd₅Al₂(T_c = 4.9 K) . We have observed a five-line ²⁷Al NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below T_c. The temperature dependence of the ²⁷Al nuclear spin-lattice relaxation rate shows no coherence peak below T_c, indicating that NpPd₅Al₂ is an unconventional superconductor with an anisotropic gap. The analysis of the present NMR data provides evidence for strong-coupling d-wave superconductivity in NpPd₅Al₂.

Original language	English
Pages (from-to)	3216-3219
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	404
Issue number	19
DOIs	https://doi.org/10.1016/j.physb.2009.07.072
Publication status	Published - 2009 Oct 15

Keywords

Heavy fermion
NMR
NpPdAl
Superconductor

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10.1016/j.physb.2009.07.072

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title = "27Al NMR studies of NpPd5Al2",

abstract = "We present 27Al NMR studies for a single crystal of the Np-based superconductor NpPd5Al2(Tc = 4.9 K) . We have observed a five-line 27Al NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below Tc. The temperature dependence of the 27Al nuclear spin-lattice relaxation rate shows no coherence peak below Tc, indicating that NpPd5Al2 is an unconventional superconductor with an anisotropic gap. The analysis of the present NMR data provides evidence for strong-coupling d-wave superconductivity in NpPd5Al2.",

keywords = "Heavy fermion, NMR, NpPdAl, Superconductor",

author = "H. Chudo and H. Sakai and Y. Tokunaga and S. Kambe and D. Aoki and Y. Homma and Y. Shiokawa and Y. Haga and S. Ikeda and Matsuda, {T. D.} and Y. Onuki and H. Yasuoka",

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doi = "10.1016/j.physb.2009.07.072",

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T1 - 27Al NMR studies of NpPd5Al2

AU - Chudo, H.

AU - Sakai, H.

AU - Tokunaga, Y.

AU - Kambe, S.

AU - Aoki, D.

AU - Homma, Y.

AU - Shiokawa, Y.

AU - Haga, Y.

AU - Ikeda, S.

AU - Matsuda, T. D.

AU - Onuki, Y.

AU - Yasuoka, H.

PY - 2009/10/15

Y1 - 2009/10/15

N2 - We present 27Al NMR studies for a single crystal of the Np-based superconductor NpPd5Al2(Tc = 4.9 K) . We have observed a five-line 27Al NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below Tc. The temperature dependence of the 27Al nuclear spin-lattice relaxation rate shows no coherence peak below Tc, indicating that NpPd5Al2 is an unconventional superconductor with an anisotropic gap. The analysis of the present NMR data provides evidence for strong-coupling d-wave superconductivity in NpPd5Al2.

AB - We present 27Al NMR studies for a single crystal of the Np-based superconductor NpPd5Al2(Tc = 4.9 K) . We have observed a five-line 27Al NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below Tc. The temperature dependence of the 27Al nuclear spin-lattice relaxation rate shows no coherence peak below Tc, indicating that NpPd5Al2 is an unconventional superconductor with an anisotropic gap. The analysis of the present NMR data provides evidence for strong-coupling d-wave superconductivity in NpPd5Al2.

KW - Heavy fermion

KW - NMR

KW - NpPdAl

KW - Superconductor

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DO - 10.1016/j.physb.2009.07.072

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SP - 3216

EP - 3219

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 19

ER -

²⁷Al NMR studies of NpPd₅Al₂

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Keywords

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