Tunable thermal conductivity in defect engineered nanowires at low temperatures

Details Tunable thermal conductivity in defect engineered nanowires at low temperatures Tunable thermal conductivity in defect engineered nanowires at low temperatures

2011-06-15

arxiv.org/abs/1106.2880v1

Phys. Rev. B 84, 121307(R) (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures, URL for supplementary material included in references

Scientific paper

10.1103/PhysRevB.84.121307

We measure the thermal conductivity ($\kappa$) of individual InAs nanowires (NWs), and find that it is 3 orders of magnitude smaller than the bulk value in the temperature range of 10 to 50 K. We argue that the low $\kappa$ arises from the strong localization of phonons in the random superlattice of twin-defects oriented perpendicular to the axis of the NW. We observe significant electronic contribution arising from the surface accumulation layer which gives rise to tunability of $\kappa$ with the application of electrostatic gate and magnetic field. Our devices and measurements of $\kappa$ at different carrier concentrations and magnetic field without introducing structural defects, offer a means to study new aspects of nanoscale thermal transport.

Affiliated with

Also associated with

No associations

Rating

Tunable thermal conductivity in defect engineered nanowires at low temperatures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tunable thermal conductivity in defect engineered nanowires at low temperatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunable thermal conductivity in defect engineered nanowires at low temperatures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-657771