Positive local magnetization in the superconducting state of PrOs4Sb12

Shigeru Kasahara; Kazuto Hirata; Tsuyoshi Tamegai; Hitoshi Sugawara; Daisuke Kikuchi; Hideyuki Sato

doi:10.1016/j.physc.2007.05.004

Positive local magnetization in the superconducting state of PrOs₄Sb₁₂

Shigeru Kasahara, Kazuto Hirata, Tsuyoshi Tamegai, Hitoshi Sugawara, Daisuke Kikuchi, Hideyuki Sato

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

3 Citations (Scopus)

Abstract

Local magnetization measurements were performed by micro Hall-probe technique in the superconducting state of PrOs₄Sb₁₂, in which the time-reversal symmetry is broken. We have observed positive, i.e. ferromagnetic like, local magnetic induction just below the superconducting transition temperature, which changes into a usual Meissner signal as temperature goes down. The signal is dependent on the measuring points of the sample surface, and may be interpreted as a sign of the dilute magnetic moment arising from spontaneous current in the superconducting state. The characteristics of the superconductivity in PrOs₄Sb₁₂ including the presence of possible spontaneous magnetization is discussed based on the local magnetization measurements.

Original language	English
Pages (from-to)	71-75
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	463-465
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.physc.2007.05.004
Publication status	Published - Oct 1 2007
Externally published	Yes

Keywords

Broken time-reversal symmetry
Filled skutterudites
Local magnetization
PrOsSb
Spontaneous field

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2007.05.004

Cite this

@article{52eac5e3866143cca4e680ee8998e410,

title = "Positive local magnetization in the superconducting state of PrOs4Sb12",

abstract = "Local magnetization measurements were performed by micro Hall-probe technique in the superconducting state of PrOs4Sb12, in which the time-reversal symmetry is broken. We have observed positive, i.e. ferromagnetic like, local magnetic induction just below the superconducting transition temperature, which changes into a usual Meissner signal as temperature goes down. The signal is dependent on the measuring points of the sample surface, and may be interpreted as a sign of the dilute magnetic moment arising from spontaneous current in the superconducting state. The characteristics of the superconductivity in PrOs4Sb12 including the presence of possible spontaneous magnetization is discussed based on the local magnetization measurements.",

keywords = "Broken time-reversal symmetry, Filled skutterudites, Local magnetization, PrOsSb, Spontaneous field",

author = "Shigeru Kasahara and Kazuto Hirata and Tsuyoshi Tamegai and Hitoshi Sugawara and Daisuke Kikuchi and Hideyuki Sato",

note = "Funding Information: This work is partially supported by a Grant-in-Aid for Scientific Research, Priority Area “Skutterudites” 16037205, from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. SK is also supported by a Grant-in-Aid for Young Scientists (B), 18740214 from MEXT. ",

year = "2007",

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doi = "10.1016/j.physc.2007.05.004",

language = "English",

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journal = "Physica C: Superconductivity and its Applications",

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T1 - Positive local magnetization in the superconducting state of PrOs4Sb12

AU - Kasahara, Shigeru

AU - Hirata, Kazuto

AU - Tamegai, Tsuyoshi

AU - Sugawara, Hitoshi

AU - Kikuchi, Daisuke

AU - Sato, Hideyuki

N1 - Funding Information: This work is partially supported by a Grant-in-Aid for Scientific Research, Priority Area “Skutterudites” 16037205, from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. SK is also supported by a Grant-in-Aid for Young Scientists (B), 18740214 from MEXT.

PY - 2007/10/1

Y1 - 2007/10/1

N2 - Local magnetization measurements were performed by micro Hall-probe technique in the superconducting state of PrOs4Sb12, in which the time-reversal symmetry is broken. We have observed positive, i.e. ferromagnetic like, local magnetic induction just below the superconducting transition temperature, which changes into a usual Meissner signal as temperature goes down. The signal is dependent on the measuring points of the sample surface, and may be interpreted as a sign of the dilute magnetic moment arising from spontaneous current in the superconducting state. The characteristics of the superconductivity in PrOs4Sb12 including the presence of possible spontaneous magnetization is discussed based on the local magnetization measurements.

AB - Local magnetization measurements were performed by micro Hall-probe technique in the superconducting state of PrOs4Sb12, in which the time-reversal symmetry is broken. We have observed positive, i.e. ferromagnetic like, local magnetic induction just below the superconducting transition temperature, which changes into a usual Meissner signal as temperature goes down. The signal is dependent on the measuring points of the sample surface, and may be interpreted as a sign of the dilute magnetic moment arising from spontaneous current in the superconducting state. The characteristics of the superconductivity in PrOs4Sb12 including the presence of possible spontaneous magnetization is discussed based on the local magnetization measurements.

KW - Broken time-reversal symmetry

KW - Filled skutterudites

KW - Local magnetization

KW - PrOsSb

KW - Spontaneous field

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