Fine Structure of In-Plane Angular Effect of Magnetoresistance of (DMET)2I3

Harukazu Yoshino; Keizo Murata; Takahiko Sasaki; Kazuya Saito; Hiroyuki Nishikawa; Koichi Kikuchi; Isao Ikemoto; Keiji Kobayashi

doi:10.1143/JPSJ.66.2248

Fine Structure of In-Plane Angular Effect of Magnetoresistance of (DMET)₂I₃

Harukazu Yoshino, Keizo Murata, Takahiko Sasaki, Kazuya Saito, Hiroyuki Nishikawa, Koichi Kikuchi, Isao Ikemoto, Keiji Kobayashi

Institute for Materials Research (IMR) (institute affiliation only)

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

15 Citations (Scopus)

Abstract

The magnetoresistance of a quasi-one-dimensional (Q1D) organic superconductor, (DMET)₂I₃, where DMET is dimethyI(ethylenedithio)diselenadithiafulvalene, was measured up to 30T at 1.5K. An electrical current was applied perpendicular to the conducting ab plane and a magnetic field is rotated in the ab plane. An anomalous hump of the magnetoresistance reported previously was observed at 7T between −15° and 15° from the most conducting b-axis. It was found that the hump has a fine structure at higher magnetic fields with two additional sharp local minima at about ±3°. Partial disappearance of the Q1D Fermi surface at a critical angle, where a kind of quantum limit is realized, is proposed to interpret the fine structure.

Original language	English
Pages (from-to)	2248-2251
Number of pages	4
Journal	journal of the physical society of japan
Volume	66
Issue number	8
DOIs	https://doi.org/10.1143/JPSJ.66.2248
Publication status	Published - 1997

Keywords

(DMET)I
magnetoresistance
organic superconductor
quantum limit
quasi-one-dimensional

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.66.2248

Cite this

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title = "Fine Structure of In-Plane Angular Effect of Magnetoresistance of (DMET)2I3",

abstract = "The magnetoresistance of a quasi-one-dimensional (Q1D) organic superconductor, (DMET)2I3, where DMET is dimethyI(ethylenedithio)diselenadithiafulvalene, was measured up to 30T at 1.5K. An electrical current was applied perpendicular to the conducting ab plane and a magnetic field is rotated in the ab plane. An anomalous hump of the magnetoresistance reported previously was observed at 7T between −15° and 15° from the most conducting b-axis. It was found that the hump has a fine structure at higher magnetic fields with two additional sharp local minima at about ±3°. Partial disappearance of the Q1D Fermi surface at a critical angle, where a kind of quantum limit is realized, is proposed to interpret the fine structure.",

keywords = "(DMET)I, magnetoresistance, organic superconductor, quantum limit, quasi-one-dimensional",

author = "Harukazu Yoshino and Keizo Murata and Takahiko Sasaki and Kazuya Saito and Hiroyuki Nishikawa and Koichi Kikuchi and Isao Ikemoto and Keiji Kobayashi",

year = "1997",

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language = "English",

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pages = "2248--2251",

journal = "Journal of the Physical Society of Japan",

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T1 - Fine Structure of In-Plane Angular Effect of Magnetoresistance of (DMET)2I3

AU - Yoshino, Harukazu

AU - Murata, Keizo

AU - Sasaki, Takahiko

AU - Saito, Kazuya

AU - Nishikawa, Hiroyuki

AU - Kikuchi, Koichi

AU - Ikemoto, Isao

AU - Kobayashi, Keiji

PY - 1997

Y1 - 1997

N2 - The magnetoresistance of a quasi-one-dimensional (Q1D) organic superconductor, (DMET)2I3, where DMET is dimethyI(ethylenedithio)diselenadithiafulvalene, was measured up to 30T at 1.5K. An electrical current was applied perpendicular to the conducting ab plane and a magnetic field is rotated in the ab plane. An anomalous hump of the magnetoresistance reported previously was observed at 7T between −15° and 15° from the most conducting b-axis. It was found that the hump has a fine structure at higher magnetic fields with two additional sharp local minima at about ±3°. Partial disappearance of the Q1D Fermi surface at a critical angle, where a kind of quantum limit is realized, is proposed to interpret the fine structure.

AB - The magnetoresistance of a quasi-one-dimensional (Q1D) organic superconductor, (DMET)2I3, where DMET is dimethyI(ethylenedithio)diselenadithiafulvalene, was measured up to 30T at 1.5K. An electrical current was applied perpendicular to the conducting ab plane and a magnetic field is rotated in the ab plane. An anomalous hump of the magnetoresistance reported previously was observed at 7T between −15° and 15° from the most conducting b-axis. It was found that the hump has a fine structure at higher magnetic fields with two additional sharp local minima at about ±3°. Partial disappearance of the Q1D Fermi surface at a critical angle, where a kind of quantum limit is realized, is proposed to interpret the fine structure.

KW - (DMET)I

KW - magnetoresistance

KW - organic superconductor

KW - quantum limit

KW - quasi-one-dimensional

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