Electrical detection of
We can detect
propagating surface plasmon
electrically throught their
heating of the metal.
Remotely launching these SPPs
gets optical energy to a
nanoscale constriction while
minimizing the local
temperature increase (by 60x
compared to direct
illumination of the constriction). This
work, led by Ms. Charlotte Evans, was reported in
Large photovoltages in nanogaps
Tunneling of hot electrons generated
by plasmon-enhanced optical absorption
can lead to comparatively large
photovoltages in metal nanogaps. This
work, led by Dr. Pavlo Zolotavin was reported in
J. Phys. Chem. Lett., and
highlighted in a news release.
Click here to see a
LiveSlides presentation about the work.
Shot noise in hBN
Panpan Zhou et
al. have demonstrated
through shot noise measurements that
atomically thin hexagonal boron
nitride (hBN) is an excellent tunnel
barrier. This opens up the
possibility of using hBN to enable
tunneling noise spectroscopy on a
variety of complex materials.