Temperature dependent electrical resistivity of a single strand of ferromagnetic single crystalline nanowire

Details Temperature dependent electrical resistivity of a single strand of ferromagnetic single crystalline nanowire Temperature dependent electrical resistivity of a single strand of ferromagnetic single crystalline nanowire

2009-06-22

arxiv.org/abs/0906.3903v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We have measured the electrical resistivity of a single strand of a ferromagnetic Ni nanowire of diameter 55 nm using a 4-probe method in the temperature range 3 K-300 K. The wire used is chemically pure and is a high quality oriented single crystalline sample in which the temperature independent residual resistivity is determined predominantly by surface scattering. Precise evaluation of the temperature dependent resistivity ($\rho$) allowed us to identify quantitatively the electron-phonon contribution (characterized by a Debye temperature $\theta_R$) as well as the spin-wave contribution which is significantly suppressed upon size reduction.

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