La-NQR study of superconductivity in La3Ir2Ge 2

Yutaka Kishimoto; Yu Kawasaki; Takashi Ohno; Dexin Li; Yoshiya Homma; Yoshinobu Shiokawa

doi:10.1016/j.physb.2005.01.128

La-NQR study of superconductivity in La₃Ir₂Ge ₂

Yutaka Kishimoto, Yu Kawasaki, Takashi Ohno, Dexin Li, Yoshiya Homma, Yoshinobu Shiokawa

IMR - Materials Processing and Characterization Division

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

1 Citation (Scopus)

Abstract

¹³⁹La-NQR measurement has been made in a superconductor La3Ir2Ge2. The spin-lattice relaxation rate 1/T1 measured in the normal state is proportional to the temperature T, indicating that La3Ir2Ge2 is a simple metal. In the superconducting state, a small coherence peak in 1/T1 appears just below the superconducting transition temperature Tc=4.7K and 1/T1 decreases exponentially well below Tc with decreasing temperatures. It is concluded that La3Ir2Ge2 is a BCS superconductor with an energy gap 2Δ(0)/kBTc=3.52.

Original language	English
Pages (from-to)	503-505
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.128
Publication status	Published - 2005 Apr 30

Keywords

LaIrGe
NQR
Superconductivity

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10.1016/j.physb.2005.01.128

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title = "La-NQR study of superconductivity in La3Ir2Ge 2",

abstract = "139La-NQR measurement has been made in a superconductor La3Ir2Ge2. The spin-lattice relaxation rate 1/T1 measured in the normal state is proportional to the temperature T, indicating that La3Ir2Ge2 is a simple metal. In the superconducting state, a small coherence peak in 1/T1 appears just below the superconducting transition temperature Tc=4.7K and 1/T1 decreases exponentially well below Tc with decreasing temperatures. It is concluded that La3Ir2Ge2 is a BCS superconductor with an energy gap 2Δ(0)/kBTc=3.52.",

keywords = "LaIrGe, NQR, Superconductivity",

author = "Yutaka Kishimoto and Yu Kawasaki and Takashi Ohno and Dexin Li and Yoshiya Homma and Yoshinobu Shiokawa",

year = "2005",

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doi = "10.1016/j.physb.2005.01.128",

language = "English",

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pages = "503--505",

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TY - JOUR

T1 - La-NQR study of superconductivity in La3Ir2Ge 2

AU - Kishimoto, Yutaka

AU - Kawasaki, Yu

AU - Ohno, Takashi

AU - Li, Dexin

AU - Homma, Yoshiya

AU - Shiokawa, Yoshinobu

PY - 2005/4/30

Y1 - 2005/4/30

N2 - 139La-NQR measurement has been made in a superconductor La3Ir2Ge2. The spin-lattice relaxation rate 1/T1 measured in the normal state is proportional to the temperature T, indicating that La3Ir2Ge2 is a simple metal. In the superconducting state, a small coherence peak in 1/T1 appears just below the superconducting transition temperature Tc=4.7K and 1/T1 decreases exponentially well below Tc with decreasing temperatures. It is concluded that La3Ir2Ge2 is a BCS superconductor with an energy gap 2Δ(0)/kBTc=3.52.

AB - 139La-NQR measurement has been made in a superconductor La3Ir2Ge2. The spin-lattice relaxation rate 1/T1 measured in the normal state is proportional to the temperature T, indicating that La3Ir2Ge2 is a simple metal. In the superconducting state, a small coherence peak in 1/T1 appears just below the superconducting transition temperature Tc=4.7K and 1/T1 decreases exponentially well below Tc with decreasing temperatures. It is concluded that La3Ir2Ge2 is a BCS superconductor with an energy gap 2Δ(0)/kBTc=3.52.

KW - LaIrGe

KW - NQR

KW - Superconductivity

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EP - 505

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - SPEC. ISS.

ER -

La-NQR study of superconductivity in La₃Ir₂Ge ₂

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