Neutron scattering studies on heavy-fermion superconductors

N. Metoki; Y. Koike; Y. Haga; T. Honma; M. Sato; Y. Onuki; N. Kimura; K. Maesawa; H. Amitsuka; M. Yokoyama; K. Kuwahara; Y. Miyako

doi:10.1016/S0921-4526(99)01746-9

Neutron scattering studies on heavy-fermion superconductors

N. Metoki, Y. Koike, Y. Haga, T. Honma, M. Sato, Y. Onuki, N. Kimura, K. Maesawa, H. Amitsuka, M. Yokoyama, K. Kuwahara, Y. Miyako

SCI - Physics

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

We review recent neutron scattering studies on uranium-based heavy-fermion superconductors. The coupling between magnetic and superconducting order parameters was observed in UPt₃, UPd₂Al₃, URu₂Si₂, and UNi₂Al₃. In UPd₂Al₃, the superconducting gap appears in the spin excitation spectra. These results are indicative of the strong interplay between magnetism and superconductivity. We also report the unusual behaviors of the weak antiferromagnetic ordering, the long-range magnetic correlation in UPt₃ at ultra-low temperatures, and the pressure-induced magnetic transition from the weak (0.02μ_B/U) to a high moment state (0.4μ_B/U) at 1.5 GPa in URu₂Si₂.

Original language	English
Pages (from-to)	362-367
Number of pages	6
Journal	Physica B: Condensed Matter
Volume	280
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(99)01746-9
Publication status	Published - 2000 May 11
Event	22nd International Conference on Low Temperature Physics (LT-22) - Helsinki, Finl Duration: 1999 Aug 4 → 1999 Aug 11

ASJC Scopus subject areas

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

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10.1016/S0921-4526(99)01746-9

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title = "Neutron scattering studies on heavy-fermion superconductors",

abstract = "We review recent neutron scattering studies on uranium-based heavy-fermion superconductors. The coupling between magnetic and superconducting order parameters was observed in UPt3, UPd2Al3, URu2Si2, and UNi2Al3. In UPd2Al3, the superconducting gap appears in the spin excitation spectra. These results are indicative of the strong interplay between magnetism and superconductivity. We also report the unusual behaviors of the weak antiferromagnetic ordering, the long-range magnetic correlation in UPt3 at ultra-low temperatures, and the pressure-induced magnetic transition from the weak (0.02μB/U) to a high moment state (0.4μB/U) at 1.5 GPa in URu2Si2.",

author = "N. Metoki and Y. Koike and Y. Haga and T. Honma and M. Sato and Y. Onuki and N. Kimura and K. Maesawa and H. Amitsuka and M. Yokoyama and K. Kuwahara and Y. Miyako",

note = "Funding Information: One of the authors (N.M.) thanks Prof. M. Date for stimulating discussions and encouragement to continue these studies. One of us (Y. Ōnuki) was supported by the Grant-in-Aid-for Priority Areas and COE Research (IOCE2004) of the Ministry of Education, Science, Sports and Culture.; 22nd International Conference on Low Temperature Physics (LT-22) ; Conference date: 04-08-1999 Through 11-08-1999",

year = "2000",

month = may,

day = "11",

doi = "10.1016/S0921-4526(99)01746-9",

language = "English",

volume = "280",

pages = "362--367",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Neutron scattering studies on heavy-fermion superconductors

AU - Metoki, N.

AU - Koike, Y.

AU - Haga, Y.

AU - Honma, T.

AU - Sato, M.

AU - Onuki, Y.

AU - Kimura, N.

AU - Maesawa, K.

AU - Amitsuka, H.

AU - Yokoyama, M.

AU - Kuwahara, K.

AU - Miyako, Y.

N1 - Funding Information: One of the authors (N.M.) thanks Prof. M. Date for stimulating discussions and encouragement to continue these studies. One of us (Y. Ōnuki) was supported by the Grant-in-Aid-for Priority Areas and COE Research (IOCE2004) of the Ministry of Education, Science, Sports and Culture.

PY - 2000/5/11

Y1 - 2000/5/11

N2 - We review recent neutron scattering studies on uranium-based heavy-fermion superconductors. The coupling between magnetic and superconducting order parameters was observed in UPt3, UPd2Al3, URu2Si2, and UNi2Al3. In UPd2Al3, the superconducting gap appears in the spin excitation spectra. These results are indicative of the strong interplay between magnetism and superconductivity. We also report the unusual behaviors of the weak antiferromagnetic ordering, the long-range magnetic correlation in UPt3 at ultra-low temperatures, and the pressure-induced magnetic transition from the weak (0.02μB/U) to a high moment state (0.4μB/U) at 1.5 GPa in URu2Si2.

AB - We review recent neutron scattering studies on uranium-based heavy-fermion superconductors. The coupling between magnetic and superconducting order parameters was observed in UPt3, UPd2Al3, URu2Si2, and UNi2Al3. In UPd2Al3, the superconducting gap appears in the spin excitation spectra. These results are indicative of the strong interplay between magnetism and superconductivity. We also report the unusual behaviors of the weak antiferromagnetic ordering, the long-range magnetic correlation in UPt3 at ultra-low temperatures, and the pressure-induced magnetic transition from the weak (0.02μB/U) to a high moment state (0.4μB/U) at 1.5 GPa in URu2Si2.

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U2 - 10.1016/S0921-4526(99)01746-9

DO - 10.1016/S0921-4526(99)01746-9

M3 - Conference article

AN - SCOPUS:0033894817

SN - 0921-4526

VL - 280

SP - 362

EP - 367

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4

T2 - 22nd International Conference on Low Temperature Physics (LT-22)

Y2 - 4 August 1999 through 11 August 1999

ER -

Neutron scattering studies on heavy-fermion superconductors

Abstract

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