TY - JOUR

T1 - Spin-dependent transport and inter-wall coupling in carbon nanotubes.

AU - Lambert, Colin J.

AU - Athanasopoloulos, S.

AU - Grace, I. M.

AU - Bailey, S. W.

PY - 2004

Y1 - 2004

N2 - Theoretical results for electron transport through two structures involving carbon nanotubes are presented. The first structure was a nanotube inserted into another nanotube of a larger diameter. The electrical conductance of the resulting double-wall CNT is an oscillatory function of the length of the insertion. The frequency and amplitude of these oscillations reflect the position dependence of inter-tube interaction in multi-wall CNTs. The second structure was a single-wall carbon nanotube (CNT) in contact with ferromagnetic electrodes, exhibiting giant magnetoresistance (GMR). An intuitive picture of GMR in clean nanotubes with low-resistance contacts is presented and ab initio results are obtained for GMR in Nickelcontacted nanotubes.

AB - Theoretical results for electron transport through two structures involving carbon nanotubes are presented. The first structure was a nanotube inserted into another nanotube of a larger diameter. The electrical conductance of the resulting double-wall CNT is an oscillatory function of the length of the insertion. The frequency and amplitude of these oscillations reflect the position dependence of inter-tube interaction in multi-wall CNTs. The second structure was a single-wall carbon nanotube (CNT) in contact with ferromagnetic electrodes, exhibiting giant magnetoresistance (GMR). An intuitive picture of GMR in clean nanotubes with low-resistance contacts is presented and ab initio results are obtained for GMR in Nickelcontacted nanotubes.

M3 - Journal article

VL - 22

SP - 435

EP - 444

JO - Materials Science

JF - Materials Science

SN - 0137-1339

IS - 4

ER -