Magnetic field orientation dependent ground states in (TMTSF)(2)PF6

We report anisotropic and angular dependent magneto-resistance measurements in the ''normal" state of TMTSF2PF6 under pressure at low temperature. The most striking feature of this study occurs below 5K where we observe metal lic behavior (dR/dT>0) when the field is aligned along intermolecular tunne ling directions (Lebed magic angles) and non-metallic behavior (dR/dT>0) fo r other orientations. Previous results showed this behavior along the most conducting a direction, but here we show that the b and c (interplane) dire ctions also exhibit this metallic to non-metallic transition with angle. At higher temperatures (similar to 15-20K) there is a resistance minimum in t he conducting (a-b) plane which is absent in the interplane (c) direction. Since we expect phase transitions, or other changes in the electronic state , to be observable in all directions, this observation implies that the nat ure of the ground state is reflected in the 5K magic angle effects and is d etermined by interplane decoupling rather than in-plane dimensionality cros sovers.