NMR study of heavy fermion compound EuNi<sub>2</sub>P<sub>2</sub>

Magishi, Ko−ichi; Watanabe, Ryo; Hisada, Aya; Saito, Takahito; Koyama, Kuniyuki; Takumi, Fujiwara

doi:10.1088/1742-6596/592/1/012031

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…2(a). The obtained Knight shift at µ 0 H = 1.0 T is in agreement with the previously reported results 37,38) and shows no significant magnetic field dependence up to µ 0 H = 7.0 T. This indicates that the static magnetic and valence states of Eu are not affected by the magnetic field. In addition, the Knight shift has a negative value in the whole measurement temperature range, indicating that the core polarization due to 2p electrons is a major contribution to the Knight shift.…”

Section: Nmr Spectrum and Knight Shiftsupporting

confidence: 92%

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi₂P₂: ³¹P NMR Study

et al. 2018

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We report 31 P NMR measurements under various magnetic fields up to 7 T for the intermediate valence compound EuNi 2 P 2 , which shows heavy electronic states at low temperatures. In the high-temperature region above 40 K, the Knight shift followed the Curie-Weiss law reflecting localized 4 f states. In addition, the behavior corresponding to the temperature variation of the average valence of Eu was observed in the nuclear spin-lattice relaxation rate 1/T 1 . With the occurrence of the Kondo effect, 1/T 1 was clearly reduced below 40 K, and the Knight shift becomes almost constant at low temperatures. From these results, the formation of heavy quasiparticles by the hybridization of Eu 4 f electrons and conduction electrons was clarified from microscopic viewpoints. Furthermore, a characteristic spin fluctuation was observed at low temperatures, which would be associated with valence fluctuations caused by the intermediate valence state of EuNi 2 P 2 .

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Section: Nmr Spectrum and Knight Shiftsupporting

confidence: 92%

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi₂P₂: ³¹P NMR Study

et al. 2018

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Gapped Spin Excitation in Magnetic Ordered State on Yb-Based Zigzag Chain Compound YbAgSe₂

Hori,

Kitagawa,

Ishida

et al. 2024

J. Phys. Soc. Jpn.

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NMR study of heavy fermion compound EuNi₂P₂

Cited by 2 publications

References 8 publications

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi₂P₂: ³¹P NMR Study

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi₂P₂: ³¹P NMR Study

Gapped Spin Excitation in Magnetic Ordered State on Yb-Based Zigzag Chain Compound YbAgSe₂

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NMR study of heavy fermion compound EuNi2P2

Cited by 2 publications

References 8 publications

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi2P2: 31P NMR Study

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi2P2: 31P NMR Study

Gapped Spin Excitation in Magnetic Ordered State on Yb-Based Zigzag Chain Compound YbAgSe2

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NMR study of heavy fermion compound EuNi₂P₂

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi₂P₂: ³¹P NMR Study

Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi₂P₂: ³¹P NMR Study

Gapped Spin Excitation in Magnetic Ordered State on Yb-Based Zigzag Chain Compound YbAgSe₂