Characterization of the Fermi surface of 
BEDT-TTF4[ Hg2Cl6] .PhCl by electronic band 
structure calculations

Veiros, Luı́s F.; Canadell, Enric

doi:10.1051/jp1:1994237

Cited by 21 publications

(35 citation statements)

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“…1 are very similar to those previously reported for the (Cl, Cl) compound [9]. of the resistance maximum amplitude [24].…”

Section: Resultssupporting

confidence: 90%

“…More precisely, as it is the case for (Cl, Cl) [9], the FS (see Fig. 1b) originates from two pairs of crossing q-1D sheets and constitutes a network of compensated electron (around M) and hole (around Z) closed orbits elongated along the (b * + c * ) and c * directions, respectively.…”

Section: Resultsmentioning

confidence: 80%

“…Tight binding band structure calculations, based on X-ray data collected at room temperature and ambient pressure, were performed using the same method as reported in [9]. The calculations use an extended Hückel effective one-electron Hamiltonian [15].…”

Section: Methodsmentioning

confidence: 99%

“…According to band structure calculations [9], its FS is composed of two compensated orbits labelled a in the following with an area of 13 % of the FBZ area. Shubnikov-de Haas (SdH) oscillations spectra of this compound [10], which otherwise exhibit many frequency combinations, as discussed below, are in good agreement with this picture since the main Fourier component has a frequency F a = 241.5 ± 2 T that corresponds to 11 % of the FBZ area.…”

Section: Introductionmentioning

confidence: 99%

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Shubnikov-de Haas oscillations spectrum of the strongly correlated quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Br)2] under pressure

et al. 2008

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In addition to a strong decrease of the magnetic breakdown field and effective masses, the latter being likely due to a reduction of the strength of electron correlations, a sizeable increase of the scattering rate is observed as the applied pressure increases. This latter point, which is at variance with data of most charge transfer salts is discussed in connection with pressure-induced features of the temperature dependence of the zero-field interlayer resistance.

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“…1 are very similar to those previously reported for the (Cl, Cl) compound [9]. of the resistance maximum amplitude [24].…”

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 80%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shubnikov-de Haas oscillations spectrum of the strongly correlated quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Br)2] under pressure

et al. 2008

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“…This model was introduced by Pippard in the early sixties in order to compute Fig. 1 -(a) Fermi surface of (ET)8Hg4Cl12(C6H5Cl)2 according to band structure calculations of Vieros et al [6]. In addition to the compensated elongated electron and hole closed orbits a, the δ and ∆ pieces are indicated.…”

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confidence: 99%

Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits

et al. 2005

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-Fermi surface: calculations and measurements; effective mass, g factor. PACS. 72.15.Gd -Galvanomagnetic and other magnetotransport effects. PACS. 71.20.Rv -Polymers and organic compounds.Abstract. -The Fermi surface of the quasi-two dimensional (2D) organic metal (ET)8Hg4Cl12 (C6H5Br)2 can be regarded as a 2D network of compensated electron and hole orbits coupled by magnetic breakthrough. Simultaneous measurements of the interlayer magnetoresistance and magnetic torque have been performed for various directions of the magnetic field up to 28 T in the temperature range from 0.36 K to 4.2 K. Magnetoresistance and de Haas-van Alphen (dHvA) oscillations spectra exhibit frequency combinations typical of such a network. Even though some of the observed magnetoresistance oscillations cannot be interpreted on the basis of neither conventional Shubnikov-de Haas oscillations nor quantum interference, the temperature and magnetic field (both orientation and magnitude) dependence of all the Fourier components of the dHvA spectra can be consistently accounted for by the dHvA effect on the basis of the Lisfhitz-Kosevich formula. This behaviour is at variance with that currently reported for compounds illustrating the linear chain of coupled orbits model.Frequency combinations observed in magnetic oscillations spectra of multiband quasi twodimensional (2D) metals have been extensively studied both from theoretical and experimental viewpoints [1]. Nevertheless, the physical origin of some of the observed Fourier components, the so called 'forbidden frequencies', remain still unclear. In addition to quantum interference (QI) that can be invoked in the case of magnetoresistance (MR) data, these frequencies can be attributed to both the oscillation of the chemical potential [2,3] and the field-dependent magnetic breakthrough (MB)-induced Landau level broadening [4]. However, a quantitative model that involve these two latter contributions is still needed. The Fermi surface (FS) of most of the compounds exhibiting such frequencies corresponds to the linear chain of coupled orbits model. This model was introduced by Pippard in the early sixties in order to compute

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Bis(ethylenethio)tetrathiafulvalene (BET‐TTF), an organic donor with high electrical conductivity

et al. 1995

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Characterization of the Fermi surface of BEDT-TTF₄[ Hg₂Cl₆] .PhCl by electronic band structure calculations

Cited by 21 publications

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Shubnikov-de Haas oscillations spectrum of the strongly correlated quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Br)2] under pressure

Shubnikov-de Haas oscillations spectrum of the strongly correlated quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Br)2] under pressure

Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits

Bis(ethylenethio)tetrathiafulvalene (BET‐TTF), an organic donor with high electrical conductivity

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Characterization of the Fermi surface of BEDT-TTF4[ Hg2Cl6] .PhCl by electronic band structure calculations

Cited by 21 publications

References 0 publications

Shubnikov-de Haas oscillations spectrum of the strongly correlated quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Br)2] under pressure

Shubnikov-de Haas oscillations spectrum of the strongly correlated quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Br)2] under pressure

Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits

Bis(ethylenethio)tetrathiafulvalene (BET‐TTF), an organic donor with high electrical conductivity

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Characterization of the Fermi surface of BEDT-TTF₄[ Hg₂Cl₆] .PhCl by electronic band structure calculations