Low- Temperature Magneto-conductance In Carbon Nano-tubes

Angular dependent magneto-resistance (MR) has been studied in Multi- walled carbon nano-tubes (MWNTs). In case of thin MWNTs, the flux cancelation has been observed in the low temperature MR. Based on the theoretical studies on the scattering behaviors in the carbon nano-tube (CNT) and flux cancelation in one dimensional transport in CNT, we can analyze an intrinsic carrier scattering based on our MR result of the angular dependence between the angle of thin MWNT axis in parallel and perpendicular directions to the magnetic fields. Also, we can discuss on the positive MR appeared in the perpendicular field direction into the thin MWNT axis.