Evidence of many-body renormalizations in some organic conductors

N. Toyota; E. W. Fenton; T. Sasaki; M. Tachiki

doi:10.1016/0038-1098(89)90414-6

Evidence of many-body renormalizations in some organic conductors

N. Toyota, E. W. Fenton, T. Sasaki, M. Tachiki

IMR - Materials Property Division

Tohoku University

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

57 Citations (Scopus)

Abstract

Magnetic quantum oscillations in (BEDT-TTF)-based salts have shown a correlation between the cyclotron mass m_c and Dingle temperature T_D of electrons in the basal planes. "Heavy-electron" systems like k-(BEDT-TTF)₂Cu(NCS)₂ with m_c = (2-5)m₀ have a low T_D less than 1 K, while "light-electron" systems like κ_L-(BEDT-TTF)₂I₃ with m_c = (0.3-0.5)m₀ have a much higher T_D of several to 10 K. Both systems however have the same magnitude of the mean free path (∼ 1000 Å) and of the band width (∼0.5 eV). This is an evidence of many-body renormalizations of m_c and τ. An importance of the on-site and/or nearest neighbor Coulomb correlations in heavy-electron organic conductors is discussed.

Original language	English
Pages (from-to)	859-862
Number of pages	4
Journal	Solid State Communications
Volume	72
Issue number	9
DOIs	https://doi.org/10.1016/0038-1098(89)90414-6
Publication status	Published - 1989 Dec

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@article{02b69306849b4b1f8d8f88f662ec1b0a,

title = "Evidence of many-body renormalizations in some organic conductors",

abstract = "Magnetic quantum oscillations in (BEDT-TTF)-based salts have shown a correlation between the cyclotron mass mc and Dingle temperature TD of electrons in the basal planes. {"}Heavy-electron{"} systems like k-(BEDT-TTF)2Cu(NCS)2 with mc = (2-5)m0 have a low TD less than 1 K, while {"}light-electron{"} systems like κL-(BEDT-TTF)2I3 with mc = (0.3-0.5)m0 have a much higher TD of several to 10 K. Both systems however have the same magnitude of the mean free path (∼ 1000 {\AA}) and of the band width (∼0.5 eV). This is an evidence of many-body renormalizations of mc and τ. An importance of the on-site and/or nearest neighbor Coulomb correlations in heavy-electron organic conductors is discussed.",

author = "N. Toyota and Fenton, {E. W.} and T. Sasaki and M. Tachiki",

note = "Funding Information: &pzL$d ement - The authors are grateful to T. a Joss for valuable discussions and to collaboratorsat ETL. The authors thank Y. Muto and T. Fukase for encouragements. This work was supported in part by Grant-in-Aid for Special Project Research from the Ministry of Education, Science and Culture of Japan.",

year = "1989",

month = dec,

doi = "10.1016/0038-1098(89)90414-6",

language = "English",

volume = "72",

pages = "859--862",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd.",

number = "9",

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TY - JOUR

T1 - Evidence of many-body renormalizations in some organic conductors

AU - Toyota, N.

AU - Fenton, E. W.

AU - Sasaki, T.

AU - Tachiki, M.

N1 - Funding Information: &pzL$d ement - The authors are grateful to T. a Joss for valuable discussions and to collaboratorsat ETL. The authors thank Y. Muto and T. Fukase for encouragements. This work was supported in part by Grant-in-Aid for Special Project Research from the Ministry of Education, Science and Culture of Japan.

PY - 1989/12

Y1 - 1989/12

N2 - Magnetic quantum oscillations in (BEDT-TTF)-based salts have shown a correlation between the cyclotron mass mc and Dingle temperature TD of electrons in the basal planes. "Heavy-electron" systems like k-(BEDT-TTF)2Cu(NCS)2 with mc = (2-5)m0 have a low TD less than 1 K, while "light-electron" systems like κL-(BEDT-TTF)2I3 with mc = (0.3-0.5)m0 have a much higher TD of several to 10 K. Both systems however have the same magnitude of the mean free path (∼ 1000 Å) and of the band width (∼0.5 eV). This is an evidence of many-body renormalizations of mc and τ. An importance of the on-site and/or nearest neighbor Coulomb correlations in heavy-electron organic conductors is discussed.

AB - Magnetic quantum oscillations in (BEDT-TTF)-based salts have shown a correlation between the cyclotron mass mc and Dingle temperature TD of electrons in the basal planes. "Heavy-electron" systems like k-(BEDT-TTF)2Cu(NCS)2 with mc = (2-5)m0 have a low TD less than 1 K, while "light-electron" systems like κL-(BEDT-TTF)2I3 with mc = (0.3-0.5)m0 have a much higher TD of several to 10 K. Both systems however have the same magnitude of the mean free path (∼ 1000 Å) and of the band width (∼0.5 eV). This is an evidence of many-body renormalizations of mc and τ. An importance of the on-site and/or nearest neighbor Coulomb correlations in heavy-electron organic conductors is discussed.

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U2 - 10.1016/0038-1098(89)90414-6

DO - 10.1016/0038-1098(89)90414-6

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SN - 0038-1098

VL - 72

SP - 859

EP - 862

JO - Solid State Communications

JF - Solid State Communications

IS - 9

ER -

Evidence of many-body renormalizations in some organic conductors

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