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14 papers · 2 filters
Non-local nuclear spin quieting in quantum dot molecules: Optically-induced extended two-electron spin coherence time
Colin M. Chow, Aaron M. Ross, Danny Kim +4
We demonstrate the extension of coherence between all four two-electron spin ground states of an InAs quantum dot molecule (QDM) via non-local suppression of nuclear spin fluctuati…
Exciton Diamagnetic Shifts and Valley Zeeman Effects in Monolayer WS and MoS to 65 Tesla
Andreas V. Stier, Kathleen M. McCreary, Berend T. Jonker +2
We report circularly-polarized optical reflection spectroscopy of monolayer WS and MoS at low temperatures (4~K) and in high magnetic fields to 65~T. Both the A and the B e…
Epitaxial graphene quantum dots for high-performance THz bolometers
A. El Fatimy, R. L. Myers-Ward, A. K. Boyd +3
Light absorption in graphene causes a large change in electron temperature, due to low electronic heat capacity and weak electron phonon coupling [1-3], making it very attractive a…
Suppression of Surface-Originated Gate-Lag by a Dual-Channel AlN/GaN HEMT Architecture
David A. Deen, David F. Storm, D. Scott Katzer +2
A dual-channel AlN/GaN high electron mobility transistor (HEMT) architecture is demonstrated that leverages ultra-thin epitaxial layers to suppress surface-state related gate lag.…
Elastic Response of Mesoporous Silicon to Capillary Pressures in the Pores
Gennady Y. Gor, Luca Bertinetti, Noam Bernstein +2
We study water adsorption-induced deformation of a monolithic, mesoporous silicon membrane traversed by independent channels of 8 nm diameter. We focus on the elastic constan…
Correlating spin transport and electrode magnetization in a graphene spin valve: simultaneous magnetic microscopy and non-local measurements
Andrew J. Berger, Michael R. Page, Hua Wen +4
Using simultaneous magnetic force microscopy (MFM) and transport measurements of a graphene spin valve, we correlate the non-local spin signal with the magnetization of the device…