Pressure-induced anomalous magnetism and unconventional superconductivity in CeRhIn5: 115In-NQR study under pressure

T. Mito; S. Kawasaki; G. Q. Zheng; Y. Kawasaki; K. Ishida; Y. Kitaoka; D. Aoki; Y. Haga; Y. Onuki

Pressure-induced anomalous magnetism and unconventional superconductivity in CeRhIn₅: ¹¹⁵In-NQR study under pressure

T. Mito, S. Kawasaki, G. Q. Zheng, Y. Kawasaki, K. Ishida, Y. Kitaoka, D. Aoki, Y. Haga, Y. Onuki

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

Abstract

We report ¹¹⁵In nuclear-quadrupole-resonance (NQR) measurements of the pressure(P)-induced superconductor CeRhIn₅ in the antiferromagnetic (AF) and superconducting (SC) states. In the AF region, the internal field H_int at the In site is substantially reduced from H_int = 1.75 kOe at P = 0 to 0.39 kOe at P = 1.23 GPa, while the Néel temperature slightly changes with increasing P. This suggests that either the size in the ordered moment M_Q(P) or the angle θ(P) between the direction of M_Q(P) and the tetragonal c axis is extrapolated to zero at P* = 1.6±0.1 GPa at which a bulk SC transition is no longer- emergent. In the SC state at P =2.1 GPa, the nuclear spin-lattice relaxation rate ¹¹⁵(1/T₁) has revealed a T³ dependence without the coherence peak just below T_c, giving evidence for the unconventional superconductivity. The dimensionality of the magnetic fluctuations in the normal state is also discussed.

Original language	English
Article number	220507
Pages (from-to)	2205071-2205074
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	63
Issue number	22
Publication status	Published - Aug 21 2001
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

@article{9267e0fb9f0848baa4d8b68878147b5e,

title = "Pressure-induced anomalous magnetism and unconventional superconductivity in CeRhIn5: 115In-NQR study under pressure",

abstract = "We report 115In nuclear-quadrupole-resonance (NQR) measurements of the pressure(P)-induced superconductor CeRhIn5 in the antiferromagnetic (AF) and superconducting (SC) states. In the AF region, the internal field Hint at the In site is substantially reduced from Hint = 1.75 kOe at P = 0 to 0.39 kOe at P = 1.23 GPa, while the N{\'e}el temperature slightly changes with increasing P. This suggests that either the size in the ordered moment MQ(P) or the angle θ(P) between the direction of MQ(P) and the tetragonal c axis is extrapolated to zero at P* = 1.6±0.1 GPa at which a bulk SC transition is no longer- emergent. In the SC state at P =2.1 GPa, the nuclear spin-lattice relaxation rate 115(1/T1) has revealed a T3 dependence without the coherence peak just below Tc, giving evidence for the unconventional superconductivity. The dimensionality of the magnetic fluctuations in the normal state is also discussed.",

author = "T. Mito and S. Kawasaki and Zheng, {G. Q.} and Y. Kawasaki and K. Ishida and Y. Kitaoka and D. Aoki and Y. Haga and Y. Onuki",

year = "2001",

month = aug,

day = "21",

language = "English",

volume = "63",

pages = "2205071--2205074",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "22",

}

TY - JOUR

T1 - Pressure-induced anomalous magnetism and unconventional superconductivity in CeRhIn5

T2 - 115In-NQR study under pressure

AU - Mito, T.

AU - Kawasaki, S.

AU - Zheng, G. Q.

AU - Kawasaki, Y.

AU - Ishida, K.

AU - Kitaoka, Y.

AU - Aoki, D.

AU - Haga, Y.

AU - Onuki, Y.

PY - 2001/8/21

Y1 - 2001/8/21

N2 - We report 115In nuclear-quadrupole-resonance (NQR) measurements of the pressure(P)-induced superconductor CeRhIn5 in the antiferromagnetic (AF) and superconducting (SC) states. In the AF region, the internal field Hint at the In site is substantially reduced from Hint = 1.75 kOe at P = 0 to 0.39 kOe at P = 1.23 GPa, while the Néel temperature slightly changes with increasing P. This suggests that either the size in the ordered moment MQ(P) or the angle θ(P) between the direction of MQ(P) and the tetragonal c axis is extrapolated to zero at P* = 1.6±0.1 GPa at which a bulk SC transition is no longer- emergent. In the SC state at P =2.1 GPa, the nuclear spin-lattice relaxation rate 115(1/T1) has revealed a T3 dependence without the coherence peak just below Tc, giving evidence for the unconventional superconductivity. The dimensionality of the magnetic fluctuations in the normal state is also discussed.

AB - We report 115In nuclear-quadrupole-resonance (NQR) measurements of the pressure(P)-induced superconductor CeRhIn5 in the antiferromagnetic (AF) and superconducting (SC) states. In the AF region, the internal field Hint at the In site is substantially reduced from Hint = 1.75 kOe at P = 0 to 0.39 kOe at P = 1.23 GPa, while the Néel temperature slightly changes with increasing P. This suggests that either the size in the ordered moment MQ(P) or the angle θ(P) between the direction of MQ(P) and the tetragonal c axis is extrapolated to zero at P* = 1.6±0.1 GPa at which a bulk SC transition is no longer- emergent. In the SC state at P =2.1 GPa, the nuclear spin-lattice relaxation rate 115(1/T1) has revealed a T3 dependence without the coherence peak just below Tc, giving evidence for the unconventional superconductivity. The dimensionality of the magnetic fluctuations in the normal state is also discussed.

UR - http://www.scopus.com/inward/record.url?scp=0034896327&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034896327&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0034896327

VL - 63

SP - 2205071

EP - 2205074

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 22

M1 - 220507

ER -

Pressure-induced anomalous magnetism and unconventional superconductivity in CeRhIn₅: ¹¹⁵In-NQR study under pressure

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this