Magnetic-field effects on the pseudogap in CeRhAs

Shunsuke Yoshii; Koichi Kindo; Tetsuya Sasakawa; Toshiaki Suemitsu; Toshiro Takabatake

doi:10.1016/S0921-4526(02)02444-4

Magnetic-field effects on the pseudogap in CeRhAs

Shunsuke Yoshii, Koichi Kindo, Tetsuya Sasakawa, Toshiaki Suemitsu, Toshiro Takabatake

Institute for Materials Research (IMR)

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

Abstract

The electrical resistivity and magnetization M(H) of single crystal CeRhAs, which is the so-called Kondo insulator, have been measured in magnetic field up to 55 T. At 1.3 K, the slopes of M(H b) and M(H∥c) decrease at around 16 and 13 T, respectively, while M(H∥a) increases monotonously. The longitudinal magnetoresistances along the b- and c-axes show characteristic structures partly associated with the anomaly of M(H), while it along the a-axis shows only a broad maximum. The transverse magnetoresistances for I/:b follow H^γ (γ = 1.5-1.7). These observations suggest the existence of a narrow and anisotropic structure within the wide pseudogap.

Original language	English
Pages (from-to)	568-569
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)02444-4
Publication status	Published - 2003 May

Keywords

CeRhAs
High magnetic field
Kondo insulator
Transport and magnetic properties

ASJC Scopus subject areas

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

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10.1016/S0921-4526(02)02444-4

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title = "Magnetic-field effects on the pseudogap in CeRhAs",

abstract = "The electrical resistivity and magnetization M(H) of single crystal CeRhAs, which is the so-called Kondo insulator, have been measured in magnetic field up to 55 T. At 1.3 K, the slopes of M(H b) and M(H∥c) decrease at around 16 and 13 T, respectively, while M(H∥a) increases monotonously. The longitudinal magnetoresistances along the b- and c-axes show characteristic structures partly associated with the anomaly of M(H), while it along the a-axis shows only a broad maximum. The transverse magnetoresistances for I/:b follow Hγ (γ = 1.5-1.7). These observations suggest the existence of a narrow and anisotropic structure within the wide pseudogap.",

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author = "Shunsuke Yoshii and Koichi Kindo and Tetsuya Sasakawa and Toshiaki Suemitsu and Toshiro Takabatake",

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TY - JOUR

T1 - Magnetic-field effects on the pseudogap in CeRhAs

AU - Yoshii, Shunsuke

AU - Kindo, Koichi

AU - Sasakawa, Tetsuya

AU - Suemitsu, Toshiaki

AU - Takabatake, Toshiro

PY - 2003/5

Y1 - 2003/5

N2 - The electrical resistivity and magnetization M(H) of single crystal CeRhAs, which is the so-called Kondo insulator, have been measured in magnetic field up to 55 T. At 1.3 K, the slopes of M(H b) and M(H∥c) decrease at around 16 and 13 T, respectively, while M(H∥a) increases monotonously. The longitudinal magnetoresistances along the b- and c-axes show characteristic structures partly associated with the anomaly of M(H), while it along the a-axis shows only a broad maximum. The transverse magnetoresistances for I/:b follow Hγ (γ = 1.5-1.7). These observations suggest the existence of a narrow and anisotropic structure within the wide pseudogap.

AB - The electrical resistivity and magnetization M(H) of single crystal CeRhAs, which is the so-called Kondo insulator, have been measured in magnetic field up to 55 T. At 1.3 K, the slopes of M(H b) and M(H∥c) decrease at around 16 and 13 T, respectively, while M(H∥a) increases monotonously. The longitudinal magnetoresistances along the b- and c-axes show characteristic structures partly associated with the anomaly of M(H), while it along the a-axis shows only a broad maximum. The transverse magnetoresistances for I/:b follow Hγ (γ = 1.5-1.7). These observations suggest the existence of a narrow and anisotropic structure within the wide pseudogap.

KW - CeRhAs

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KW - Kondo insulator

KW - Transport and magnetic properties

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