5,582 research outputs found
Polaron Transport in the Paramagnetic Phase of Electron-Doped Manganites
The electrical resistivity, Hall coefficient, and thermopower as functions of
temperature are reported for lightly electron-doped Ca(1-x)La(x)MnO(3)(0 <= x
<= 0.10). Unlike the case of hole-doped ferromagnetic manganites, the magnitude
and temperature dependence of the Hall mobility for these compounds is found to
be inconsistent with small-polaron theory. The transport data are better
described by the Feynman polaron theory and imply intermediate coupling (alpha
\~ 5.4) with a band effective mass, m*~4.3 m_0, and a polaron mass, m_p ~ 10
m_0.Comment: 7 pp., 7 Fig.s, to be published, PR
Proposal for manipulating and detecting spin and orbital states of trapped electrons on helium using cavity quantum electrodynamics
We propose to couple an on-chip high finesse superconducting cavity to the
lateral-motion and spin state of a single electron trapped on the surface of
superfluid helium. We estimate the motional coherence times to exceed 15
microseconds, while energy will be coherently exchanged with the cavity photons
in less than 10 nanoseconds for charge states and faster than 1 microsecond for
spin states, making the system attractive for quantum information processing
and cavity quantum electrodynamics experiments. Strong interaction with cavity
photons will provide the means for both nondestructive readout and coupling of
distant electrons.Comment: 4 pages, 3 figures, supplemental material
Mapping API’s: Google Maps API v3 - Getting Started
Welcome to the Essential ArcGIS Task Sheet Series. This series supplements the Iowa State University GIS Geospatial Technology Training Program short course series. The task sheets are designed to provide quick, easy instructions for performing mapping tasks.https://lib.dr.iastate.edu/extension_pubs/1176/thumbnail.jp
Creating Random Points
Welcome to the Essential ArcGIS Task Sheet Series. This series supplements the Iowa State University Geospatial Technology Training Program short course series. The task sheets are designed to provide quick, easy instructions for performing mapping tasks.https://lib.dr.iastate.edu/extension_pubs/1120/thumbnail.jp
Identification of main contributions to conductivity of epitaxial InN
Complex effect of different contributions (spontaneously formed In
nanoparticles, near-interface, surface and bulk layers) on electrophysical
properties of InN epitaxial films is studied. Transport parameters of the
surface layer are determined from the Shubnikov-de Haas oscillations measured
in undoped and Mg-doped InN films at magnetic fields up to 63 T. It is shown
that the In nanoparticles, near-interface and bulk layers play the dominant
role in the electrical conductivity of InN, while influence of the surface
layer is pronounced only in the compensated low-mobility InN:Mg films
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