Transport properties of organic conductor (BEDT-TTF)2KHg(SCN)4: I. Resistance and magnetoresistance anomaly

摘要: Abstract The electrical resistance of the single crystalline organic salt (BEDT-TTF) 2 KHg(SCN) 4 has been measured at temperatures down to 0.5 K and under magnetic fields up 13 T. zero-field decreases almost monotonously with decreasing temperature 9–10 then exhibits a step-like anomaly accompanying 30–40% drop around below T =8 K. Under perpendicular conducting a-c plane, is so enhanced that an upturn in temperature-dependent appears resistance, for example, K, becomes higher by factor 12 than H =13 This anomalous magnetoresistance never observed precisely aligned parallel plane. dc susceptibility shows broad maximum , which seems be evidence weak anti-ferromagnetic correlations like spin-density-wave ordering takes place among p (п) electrons itinerating metallic states.