Characterization of the Fermi surface of (BEDO-TTF)5[CsHg(SCN)4]2 by magnetoresistance measurements and tight-binding band structure calculations

Rustem B. Lyubovskii; Serguei I. Pesotskii; Marc Gener; Roger Rousseau; Enric Canadell; Jos A.A.J. Perenboom; Victor I. Nizhankovskii; Elena I. Zhilyaeva; Olga A. Bogdanova; Rimma N. Lyubovskaya

doi:10.1039/b107223b

Characterization of the Fermi surface of (BEDO-TTF)₅[CsHg(SCN)₄]₂ by magnetoresistance measurements and tight-binding band structure calculations

Rustem B. Lyubovskii, Serguei I. Pesotskii, Marc Gener, Roger Rousseau, Enric Canadell, Jos A.A.J. Perenboom, Victor I. Nizhankovskii, Elena I. Zhilyaeva, Olga A. Bogdanova, Rimma N. Lyubovskaya

Pacific Northwest National Laboratory

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

15 Citations (Scopus)

Abstract

Tight-binding band structure calculations as well as magnetoresistance and magnetization measurements were carried out in order to characterize the Fermi surface of the novel organic metal (BEDO-TTF)₅[CsHg(SCN)₄]₂. The tight-binding calculations suggest that the Fermi surface can be described as containing two contributions: a closed two-dimensional portion associated with holes and an open pseudo-one-dimensional portion associated with electrons. Shubnikov-de Haas and de Haas-van Alphen oscillations were observed in magnetic fields of up to 14 T and temperatures of 1.5-4.2 K. Four frequencies (F₁ = 650 T, F₂ = 2600 T, F₃ = 3200 T and F₄ = 3850 T) associated with the Shubnikov-de Haas oscillationswere found. The F₁ and F₄ frequencies are in good agreement with the calculated Fermi surface provided that the possibility of a magnetic breakdown effect is taken into account. It is also suggested that the F₂ and F₃ frequencies can be understood in the frame of the quantum interference effect.

Original language	English
Pages (from-to)	483-488
Number of pages	6
Journal	Journal of Materials Chemistry
DOIs	https://doi.org/10.1039/b107223b
Publication status	Published - 2002

Keywords

(BEDO-TTF)[CsHg(SCN)]
BEDO-TTF
Fermi surface characterization
Magnetoresistance
Organic metal
Tight-binding band structure calculation

ASJC Scopus subject areas

Chemistry(all)
Materials Chemistry

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Lyubovskii, R. B., Pesotskii, S. I., Gener, M., Rousseau, R., Canadell, E., Perenboom, J. A. A. J., Nizhankovskii, V. I., Zhilyaeva, E. I., Bogdanova, O. A., & Lyubovskaya, R. N. (2002). Characterization of the Fermi surface of (BEDO-TTF)₅[CsHg(SCN)₄]₂ by magnetoresistance measurements and tight-binding band structure calculations. Journal of Materials Chemistry, 483-488. https://doi.org/10.1039/b107223b

Characterization of the Fermi surface of (BEDO-TTF)₅[CsHg(SCN)₄]₂ by magnetoresistance measurements and tight-binding band structure calculations. / Lyubovskii, Rustem B.; Pesotskii, Serguei I.; Gener, Marc; Rousseau, Roger; Canadell, Enric; Perenboom, Jos A.A.J.; Nizhankovskii, Victor I.; Zhilyaeva, Elena I.; Bogdanova, Olga A.; Lyubovskaya, Rimma N.

In: Journal of Materials Chemistry, 2002, p. 483-488.

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

Lyubovskii, RB, Pesotskii, SI, Gener, M, Rousseau, R, Canadell, E, Perenboom, JAAJ, Nizhankovskii, VI, Zhilyaeva, EI, Bogdanova, OA & Lyubovskaya, RN 2002, 'Characterization of the Fermi surface of (BEDO-TTF)₅[CsHg(SCN)₄]₂ by magnetoresistance measurements and tight-binding band structure calculations', Journal of Materials Chemistry, pp. 483-488. https://doi.org/10.1039/b107223b

Lyubovskii, Rustem B. ; Pesotskii, Serguei I. ; Gener, Marc ; Rousseau, Roger ; Canadell, Enric ; Perenboom, Jos A.A.J. ; Nizhankovskii, Victor I. ; Zhilyaeva, Elena I. ; Bogdanova, Olga A. ; Lyubovskaya, Rimma N. / Characterization of the Fermi surface of (BEDO-TTF)₅[CsHg(SCN)₄]₂ by magnetoresistance measurements and tight-binding band structure calculations. In: Journal of Materials Chemistry. 2002 ; pp. 483-488.

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abstract = "Tight-binding band structure calculations as well as magnetoresistance and magnetization measurements were carried out in order to characterize the Fermi surface of the novel organic metal (BEDO-TTF)5[CsHg(SCN)4]2. The tight-binding calculations suggest that the Fermi surface can be described as containing two contributions: a closed two-dimensional portion associated with holes and an open pseudo-one-dimensional portion associated with electrons. Shubnikov-de Haas and de Haas-van Alphen oscillations were observed in magnetic fields of up to 14 T and temperatures of 1.5-4.2 K. Four frequencies (F1 = 650 T, F2 = 2600 T, F3 = 3200 T and F4 = 3850 T) associated with the Shubnikov-de Haas oscillationswere found. The F1 and F4 frequencies are in good agreement with the calculated Fermi surface provided that the possibility of a magnetic breakdown effect is taken into account. It is also suggested that the F2 and F3 frequencies can be understood in the frame of the quantum interference effect.",

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AU - Gener, Marc

AU - Rousseau, Roger

AU - Canadell, Enric

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AU - Nizhankovskii, Victor I.

AU - Zhilyaeva, Elena I.

AU - Bogdanova, Olga A.

AU - Lyubovskaya, Rimma N.

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AB - Tight-binding band structure calculations as well as magnetoresistance and magnetization measurements were carried out in order to characterize the Fermi surface of the novel organic metal (BEDO-TTF)5[CsHg(SCN)4]2. The tight-binding calculations suggest that the Fermi surface can be described as containing two contributions: a closed two-dimensional portion associated with holes and an open pseudo-one-dimensional portion associated with electrons. Shubnikov-de Haas and de Haas-van Alphen oscillations were observed in magnetic fields of up to 14 T and temperatures of 1.5-4.2 K. Four frequencies (F1 = 650 T, F2 = 2600 T, F3 = 3200 T and F4 = 3850 T) associated with the Shubnikov-de Haas oscillationswere found. The F1 and F4 frequencies are in good agreement with the calculated Fermi surface provided that the possibility of a magnetic breakdown effect is taken into account. It is also suggested that the F2 and F3 frequencies can be understood in the frame of the quantum interference effect.

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