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.
Will Hardy et al.
discovered some unusual low-frequency
voltage fluctuations in
strontium titanate quantum wells.
These fluctuations grow as temperature
is decreased, even in the absence of
a driving current. We posit that they
come from etching-related fluctuating
defects modulating the local
thermoelectric properties of the material.
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.