Low-Dimensional Organic Conductors under High Maghetic Fields

Abstract
Novel electronic properties of low-dimensional organic conductors under high magnetic fields are briefly reviewed and some topical problems are discussed. Magnetic field effects to electron spins and electron orbital motions are discussed in the quasi one-dimensional conductors (R ₁R ₂ DCNQI) ₂Cu and (TMTSF) ₂X and in the quasi two-dimensional conductor (BEDT-TTF) ₂XHg(SCN) ₄. Electronic properties in the anomalous state of (BEDT-TTF) ₂KHg(SCN) ₄ are discussed in the light of the angle dependent magnetoresistance oscillations. Properties of field-induced spin-density waves are studied in relation to the superlattice potential made by the anion ordering in (TMTSF) ₂ClO ₄. Possible origins of the rapid oscillations in magnetoresistance of (TMTSF) ₂X are examined. Introduction is made to theoretical ideas of field-induced superconductivity and experimental trial to find it.