Shubnikov-de Haas Oscillations in New Organic Conductors (ET)$\mathsf{_8}$[ Hg$\mathsf{_4}$Cl$\mathsf{_{12}}$(C$\mathsf{_6}$H$\mathsf{_5}$Cl)$\mathsf{_2}$] and (ET)$\mathsf{_8}$[ Hg$\mathsf{_4}$Cl$\mathsf{_{12}}$(C$\mathsf{_6}$H$\mathsf{_5}$Br)$\mathsf{_2}$]

R.B. Lyubovskii; S.I. Pesotskii; A. Gilevski; R.N. Lyubovskaya

doi:doi:10.1051/jp1:1996189

Numéro		J. Phys. I France Volume 6, Numéro 12, December 1996


Page(s)		1809 - 1818
DOI		https://doi.org/10.1051/jp1:1996189

DOI: 10.1051/jp1:1996189
J. Phys. I France 6 (1996) 1809-1818

Shubnikov-de Haas Oscillations in New Organic Conductors (ET) $\mathsf{_8}$ [ Hg $\mathsf{_4}$ Cl $\mathsf{_{12}}$ (C $\mathsf{_6}$ H $\mathsf{_5}$ Cl) $\mathsf{_2}$ ] and (ET) $\mathsf{_8}$ [ Hg $\mathsf{_4}$ Cl $\mathsf{_{12}}$ (C $\mathsf{_6}$ H $\mathsf{_5}$ Br) $\mathsf{_2}$ ]

R.B. Lyubovskii^{1, 2}, S.I. Pesotskii^{1, 2}, A. Gilevski² and R.N. Lyubovskaya¹

¹ Institute of Chemical Physics at Chernogolovka RAS, Chernogolovka. Moscow region, 142432 Russia
² International Laboratory of High Magnetic Fields and Low Temperatures, 53-529 Wroclaw, Poland

(Received 5 April 1996, accepted 11 June 1996)

Abstract
The results of the investigations of Shubnikov-de Haas oscillations in the quasi-two-dimensional organic complexes (ET) ₈[ Hg ₄Cl ₁₂(C ₆H ₅Cl) ₂] , where X = CI, Br in the magnetic fields up to 40 T were reported. These results allow one to obtain some information about Fermi surface in the mentioned complexes. Shubnikov-de Haas oscillations in the compound with X = Cl correspond at least to two different cylindrical sheets of Fermi surface with the cross-section in (bc)-plane of 13% and 20% Brillouin zone cross-section. Shubnikov-de Haas oscillations in the complex with X = Br correspond to one cylindrical sheet with the cross-section in (bc)-plane of 13% of Brillouin zone cross-section. The experimental results for the complex with X = Br more agree with the theoretical calculations of Fermi surface than for the complex with X = Cl.

Shubnikov-de Haas Oscillations in New Organic Conductors (ET) [ Hg Cl (C H Cl) ] and (ET) [ Hg Cl (C H Br) ]

Shubnikov-de Haas Oscillations in New Organic Conductors (ET) $\mathsf{_8}$ [ Hg $\mathsf{_4}$ Cl $\mathsf{_{12}}$ (C $\mathsf{_6}$ H $\mathsf{_5}$ Cl) $\mathsf{_2}$ ] and (ET) $\mathsf{_8}$ [ Hg $\mathsf{_4}$ Cl $\mathsf{_{12}}$ (C $\mathsf{_6}$ H $\mathsf{_5}$ Br) $\mathsf{_2}$ ]