Field-induced reentrant superconductivity driven by quantum tricritical fluctuations in URhGe

Y. Tokunaga; D. Aoki; H. Mayaffre; S. Krämer; M. H. Julien; C. Berthier; M. Horvatić; H. Sakai; T. Hattori; S. Kambe; S. Araki

doi:10.1016/j.physb.2017.09.022

Field-induced reentrant superconductivity driven by quantum tricritical fluctuations in URhGe

Y. Tokunaga, D. Aoki, H. Mayaffre, S. Krämer, M. H. Julien, C. Berthier, M. Horvatić, H. Sakai, T. Hattori, S. Kambe, S. Araki

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

Abstract

We review our ⁵⁹Co NMR study in a URhGe single crystal doped with 10% cobalt. The spin-spin relaxation time (T₂) measurements have revealed a divergence of electronic spin fluctuations in the vicinity of a field-induced tricritical point (TCP) locating around 13 T. The fluctuations is developed in the same limited field region around the TCP as that where a reentrant superconductivity (RSC) is observed in URhGe. The finding strongly suggests these quantum fluctuations as the pairing glue responsible for the RSC.

Original language	English
Pages (from-to)	122-124
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	536
DOIs	https://doi.org/10.1016/j.physb.2017.09.022
Publication status	Published - May 1 2018

Keywords

Ferromagnetic superconductor
Quantum fluctuation
Reentrant superconductivity

ASJC Scopus subject areas

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

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10.1016/j.physb.2017.09.022

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title = "Field-induced reentrant superconductivity driven by quantum tricritical fluctuations in URhGe",

abstract = "We review our 59Co NMR study in a URhGe single crystal doped with 10% cobalt. The spin-spin relaxation time (T2) measurements have revealed a divergence of electronic spin fluctuations in the vicinity of a field-induced tricritical point (TCP) locating around 13 T. The fluctuations is developed in the same limited field region around the TCP as that where a reentrant superconductivity (RSC) is observed in URhGe. The finding strongly suggests these quantum fluctuations as the pairing glue responsible for the RSC.",

keywords = "Ferromagnetic superconductor, Quantum fluctuation, Reentrant superconductivity",

author = "Y. Tokunaga and D. Aoki and H. Mayaffre and S. Kr{\"a}mer and Julien, {M. H.} and C. Berthier and M. Horvati{\'c} and H. Sakai and T. Hattori and S. Kambe and S. Araki",

note = "Funding Information: We are grateful for stimulating discussions with R.E. Walstedt, J. Flouquet, N. Tateiwa, K. Kubo, K. Hattori, H. Ikeda, K. Aoyama, and V.P. Mineev. A part of this work was supported by JSPS KAKENHI Grant nos. 26400375 , 15H05745 and 15K05884 (J-Physics), ERC starting grant (NewHeavyFermion), ICC-IMR , and the REIMEI Research Program of JAEA . ",

year = "2018",

month = may,

day = "1",

doi = "10.1016/j.physb.2017.09.022",

language = "English",

volume = "536",

pages = "122--124",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Field-induced reentrant superconductivity driven by quantum tricritical fluctuations in URhGe

AU - Tokunaga, Y.

AU - Aoki, D.

AU - Mayaffre, H.

AU - Krämer, S.

AU - Julien, M. H.

AU - Berthier, C.

AU - Horvatić, M.

AU - Sakai, H.

AU - Hattori, T.

AU - Kambe, S.

AU - Araki, S.

N1 - Funding Information: We are grateful for stimulating discussions with R.E. Walstedt, J. Flouquet, N. Tateiwa, K. Kubo, K. Hattori, H. Ikeda, K. Aoyama, and V.P. Mineev. A part of this work was supported by JSPS KAKENHI Grant nos. 26400375 , 15H05745 and 15K05884 (J-Physics), ERC starting grant (NewHeavyFermion), ICC-IMR , and the REIMEI Research Program of JAEA .

PY - 2018/5/1

Y1 - 2018/5/1

N2 - We review our 59Co NMR study in a URhGe single crystal doped with 10% cobalt. The spin-spin relaxation time (T2) measurements have revealed a divergence of electronic spin fluctuations in the vicinity of a field-induced tricritical point (TCP) locating around 13 T. The fluctuations is developed in the same limited field region around the TCP as that where a reentrant superconductivity (RSC) is observed in URhGe. The finding strongly suggests these quantum fluctuations as the pairing glue responsible for the RSC.

AB - We review our 59Co NMR study in a URhGe single crystal doped with 10% cobalt. The spin-spin relaxation time (T2) measurements have revealed a divergence of electronic spin fluctuations in the vicinity of a field-induced tricritical point (TCP) locating around 13 T. The fluctuations is developed in the same limited field region around the TCP as that where a reentrant superconductivity (RSC) is observed in URhGe. The finding strongly suggests these quantum fluctuations as the pairing glue responsible for the RSC.

KW - Ferromagnetic superconductor

KW - Quantum fluctuation

KW - Reentrant superconductivity

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U2 - 10.1016/j.physb.2017.09.022

DO - 10.1016/j.physb.2017.09.022

M3 - Article

AN - SCOPUS:85029600450

SN - 0921-4526

VL - 536

SP - 122

EP - 124

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Field-induced reentrant superconductivity driven by quantum tricritical fluctuations in URhGe

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Keywords

ASJC Scopus subject areas

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