108 citations · 364 across the 11 of their papers we have counts for
11 papers
Novel Methods to Create Multielectron Bubbles in Superfluid Helium
J. Fang, Anatoly. E. Dementyev, J. Tempere +1
An equilibrium multielectron bubble in liquid helium is a fascinating object with a spherical two-dimensional electron gas on its surface. We describe two ways of creating them. ME…
High-field Overhauser DNP in silicon below the metal-insulator transition
Anatoly E. Dementyev, David G. Cory, Chandrasekhar Ramanathan
Single crystal silicon is an excellent system in which to explore dynamic nuclear polarization (DNP), as it exhibits a continuum of properties from metallic to insulating as a func…
Thermionic Emission, Multielectron Bubbles, and A Novel Electron Collector in a Liquid Helium Environment
J. Fang, Anatoly E. Dementyev, Jacques Tempere +1
We study two techniques to create electrons in a liquid helium environment. One is thermionic emission of tungsten filaments in a low temperature cell in the vapor phase with a sup…
Dynamic Nuclear Polarization in Silicon Microparticles
A. E. Dementyev, D. G. Cory, C. Ramanathan
We report record high Si-29 spin polarization obtained using dynamic nuclear polarization in microcrystalline silicon powder. Unpaired electrons in this silicon powder are due to d…
Rapid Diffusion of dipolar order enhances dynamic nuclear polarization
Anatoly E. Dementyev, David G. Cory, Chandrasekhar Ramanathan
In a dynamic nuclear polarization experiment on a 40 mM solution of 4-amino-TEMPO in a 40:60 water/glycerol mixture, we have observed that the bulk dipolar reservoir is cooled to a…
Generating Unexpected Spin Echoes in Dipolar Solids with Pi Pulses
Dale Li, A. E. Dementyev, Yanqun Dong +2
NMR spin echo measurements of C-13 in C60, Y-89 in Y2O3, and Si-29 in silicon are shown to defy conventional expectations when more that one pi pulse is used. Multiple pi-pulse ech…