Confinement in Bechgaard Salts: Anomalous Magnetoresistance and Nuclear Relaxation

Abstract

We present and analyze the normal phase temperature dependence of resistivity and nuclear spin-lattice relaxation of $(\mathrm{TMTSF}{)}_{2}{\mathrm{ClO}}_{4}$ under strong transverse magnetic fields. From a field-dependent scaling theory we show that the singular enhancement of the one-dimensional electron-electron umklapp scattering and antiferromagnetic spin correlations under field play a fundamental role in the large enhancement of magnetoresistance and nuclear relaxation of Bechgaard salts.