Nonlinear transport through interacting single-wall nanotubes containing a few impurities is studied theoretically. Extending the Luttinger liquid theory to incorporate trigonal warping and chirality effects, we derive the current contribution $I_e$ { \sl even} in the applied voltage $V$ and { \sl odd} in an orbital magnetic field $B$, which is non-zero only for chiral tubes and in the presence of interactions.
Categories: cond-mat.mes-hall cond-mat.str-el
