Стабилизация металлического состояния в квазидвумерном органическом металле (ET)-=SUB=-8-=/SUB=-Hg-=SUB=-4-=/SUB=-Br-=SUB=-12-=/SUB=-(C-=SUB=-6-=/SUB=-H-=SUB=-5-=/SUB=-Cl)-=SUB=-2-=/SUB=- под давлением 6 kbar

Abstract

AbstractA quasi-two-dimensional (ET)_8Hg_4Br_12(C_6H_5Cl)_2 organic metal undergoes the metal–dielectric transition at T ~ 90 K upon cooling. An external pressure of P ~ 6 kbar completely recovers the metallic state and makes it possible to observe the Shubnikov–de Hass oscillations with a frequency of F ≈ 215 T and a cyclotron mass of m * ≈ 0.95 m _0. The behavior of the oscillations is consistent with the Fermi surface representation in the form of electron and hole orbits covering the same areas of the first Brillouin zone.