mobility gap

Why not use community and voluntary transport to bridge the mobility gap?

One reason for the mobility gap may be the depth of American poverty, which leaves poor children starting especially far behind.

Energy parameters within the mobility gap of amorphous CdTe were evaluated.

The new report called the performance of blacks on a key standardized test a factor that accounts for virtually the entire mobility gap separating the races.

Localized states extend into the mobility gap 0.37 eV from the valence mobility edge.

The energy span between mobility edges of adjacent Landau levels (shaded in c) is called the mobility gap.

That is, it involves such things as mobility gaps, phonon-assisted hopping, polarons, quantum tunneling, and so forth.

The mobility gap has been widely discussed in academic circles, but a sour season of mass unemployment and street protests has moved the discussion toward center stage.

The mobility gap thus interrupts the smooth movement of EF through delocalised states as Vg is altered.

There is also a mobility gap between people with unlimited access to a private car and the financial means to satisfy personal travel requirements and those who just subsist.

The result is a "mobility gap," said Joseph Coughlin, head of the Massachusetts Institute of Technology's AgeLab, which develops technologies aimed at keeping older people active.

When a whole number of Landau levels are filled in a MOSFET, the Fermi energy,EF, lies in a mobility gap.

This 'mobility gap' separates the occupied 'delocalised'states that contain the mobile electrons (and are so-called precisely because they can move around in the semiconductor) from vacant delocalised states in higher Landau levels.

The localised states thus act as an electron reservoir, keeping the effective density of mobile electrons constant over ranges of V that have widths proportional to the number of states in the mobility gap.

For example, as Vg is increased and EF moves through a mobility gap, the extra electrons drawn into the inversion layer populate localised states, and the effective density of mobile electrons stay fixed.

A study from the Economic Mobility Project found that growing up in a high-poverty neighborhood increases Americans' risk of experiencing downward mobility and explains a sizable portion of the black-white downward mobility gap.

So at low enough temperatures, with the gate voltage,Vg, chosen to put EF in a mobility gap, all the current is in effect carried by electrons that cannot be dissipatively scattered, and the resistance falls to zero.

Many experiments are required to characterize an amorphous material and hence we have presented the results for dc conductivity, photoconductivity, optical absorption, thermoelectric power, ac conductivity, and drift mobility experiments for this material. a-ZnSe is n-type, with the Fermi level near the middle of the mobility gap.

When the Fermi energy,EF, is in a mobility gap, the regions of localised states act like current vortices: they store electrostatic energy as reservoirs of circulating electrons that are depleted or replenished as EF is moved by the gate voltage, Vg, but they do not add to the conductivity.