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4 papers · 1 filter
Effects of Diffusion on Photocurrent Generation in Single-Walled Carbon Nanotube Films
Christopher A. Merchant, Nina Markovic
We have studied photocurrent generation in large carbon nanotube (CNT) films using electrodes with different spacings. We observe that the photocurrent depends strongly on the posi…
Electrically Tunable Spin Polarization in a Carbon-Nanotube Spin Diode
Christopher A. Merchant, Nina Markovic
We have studied the current through a carbon nanotube quantum dot with one ferromagnetic and one normal-metal lead. For the values of gate voltage at which the normal lead is reson…
Composite domain walls in flat nanomagnets: the magnetostatic limit
H. Youk, G. -W. Chern, K. Merit +2
We discuss the structure of the so-called "vortex" domain walls in soft magnetic nanoparticles. A wall of this kind is a composite object consisting of three elementary topological…
Topological defects in flat nanomagnets: the magnetostatic limit
G. -W. Chern, H. Youk, O. Tchernyshyov
We discuss elementary topological defects in soft magnetic nanoparticles in the thin-film geometry. In the limit dominated by magnetostatic forces the low-energy defects are vortic…