Fermi surface studies of α-phase organic metals and superconductors

J. Wosnitza; G. Goll; D. Beckmann; E. Steep; N. D. Kushch; T. Sasaki; T. Fukase

doi:10.1007/BF00753942

Fermi surface studies of α-phase organic metals and superconductors

J. Wosnitza, G. Goll, D. Beckmann, E. Steep, N. D. Kushch, T. Sasaki, T. Fukase

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

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

2 Citations (Scopus)

Abstract

We present first de Haas-van Alphen (dHvA) experiments on the quasi-two-dimensional (quasi-2D) organic metals α-(ET)₂MHg(SeCN)₄ (M = Tl or K) and compare the results with dHvA data of the isostructural organic superconductor α-(ET)₂NH₄Hg(SCN)₄. The angular dependences of the single found dHvA frequency and the field-independent effective cyclotron mass, m_c, perfectly follow the 2D 1/cos Θ behavior. From the observed spin-splitting zeros we unambiguously could extract the values of gμb. Comparison with m_c strongly suggests a reduced electron-phonon coupling constant in the non-superconducting salts.

Original language	English
Pages (from-to)	1691-1696
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	105
Issue number	5-6
DOIs	https://doi.org/10.1007/BF00753942
Publication status	Published - 1996

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

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title = "Fermi surface studies of α-phase organic metals and superconductors",

abstract = "We present first de Haas-van Alphen (dHvA) experiments on the quasi-two-dimensional (quasi-2D) organic metals α-(ET)2MHg(SeCN)4 (M = Tl or K) and compare the results with dHvA data of the isostructural organic superconductor α-(ET)2NH4Hg(SCN)4. The angular dependences of the single found dHvA frequency and the field-independent effective cyclotron mass, mc, perfectly follow the 2D 1/cos Θ behavior. From the observed spin-splitting zeros we unambiguously could extract the values of gμb. Comparison with mc strongly suggests a reduced electron-phonon coupling constant in the non-superconducting salts.",

author = "J. Wosnitza and G. Goll and D. Beckmann and E. Steep and Kushch, {N. D.} and T. Sasaki and T. Fukase",

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journal = "Journal of Low Temperature Physics",

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TY - JOUR

T1 - Fermi surface studies of α-phase organic metals and superconductors

AU - Wosnitza, J.

AU - Goll, G.

AU - Beckmann, D.

AU - Steep, E.

AU - Kushch, N. D.

AU - Sasaki, T.

AU - Fukase, T.

PY - 1996

Y1 - 1996

N2 - We present first de Haas-van Alphen (dHvA) experiments on the quasi-two-dimensional (quasi-2D) organic metals α-(ET)2MHg(SeCN)4 (M = Tl or K) and compare the results with dHvA data of the isostructural organic superconductor α-(ET)2NH4Hg(SCN)4. The angular dependences of the single found dHvA frequency and the field-independent effective cyclotron mass, mc, perfectly follow the 2D 1/cos Θ behavior. From the observed spin-splitting zeros we unambiguously could extract the values of gμb. Comparison with mc strongly suggests a reduced electron-phonon coupling constant in the non-superconducting salts.

AB - We present first de Haas-van Alphen (dHvA) experiments on the quasi-two-dimensional (quasi-2D) organic metals α-(ET)2MHg(SeCN)4 (M = Tl or K) and compare the results with dHvA data of the isostructural organic superconductor α-(ET)2NH4Hg(SCN)4. The angular dependences of the single found dHvA frequency and the field-independent effective cyclotron mass, mc, perfectly follow the 2D 1/cos Θ behavior. From the observed spin-splitting zeros we unambiguously could extract the values of gμb. Comparison with mc strongly suggests a reduced electron-phonon coupling constant in the non-superconducting salts.

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Fermi surface studies of α-phase organic metals and superconductors

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