Mesoscopic Nbse3 Wires
Journal de physique IV/Journal de physique IV-proceedings(1999)
摘要
We have fabricated wire structures with (sub)micron sizes in the charge-density wave conductor NbSe3. Electrical transport measurements include complete mode-locking on Shapiro steps and show that the patterning has not affected the CDW material. Our mesoscopic wires show strong fluctuation and hysteresis effects in the low-temperature current-voltage characteristics, as well as a strong reduction of the phase-slip voltage. This reduction can not be explained with existing models. We suggest that single phase-slip events are responsible for a substantial reduction of the CDW strain in micron-sized systems.
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