Ladungstransport in dünnen Filmen

The response of metals in trapezoidal magnetic fields

“…The same result of course is obtained by combining EO = -(1/#oOo)/( aB/~r) and (8). 1 Since E¢(0) = 0 we obtain Npp-2 __ Z.…”

“…Mean free path effects in inductive measurements were discussed by Reuter and Sondheimer [6], Dingle [7] and Cotti [8] for slabs. This theory for a fiat boundary was applied by Llyal and Cochran [9] to cylindrical samples with radii much larger than the mean free path.…”

“…Then the time dependence of B a in an increasing field will be given by O time rl. For an accuracy of 1 70° rl must be at least 7 times the largest response time in (8).…”

Temperature and Mean-Free-Path Dependence of the Upper Critical Field in Indium-Lead Alloys

“…As a consequence of this, it is conceivable that the resistivity might not be a good indication of the average mean free path. Gygax 9 rejects this possibility on the basis of measurements by Cotti et al 10 Another possible effect of this overlap is a change of the electron-phonon interaction and of the anisotropy of the Fermi surface. Helfand and Werthamer 3 have indicated that the inclusion of strong electron-phonon coupling and Fermisurface anisotropy effects would lead to a stronger temperature dependence of K X .…”

Charge Storage Effects in Pseudomorphic High Electron Mobility Transistors

“…Thus, the mean free path should be lacge, even at points close to the edges, and this is confirmed by the measured value of 1/1, which IS unity. 5 is an average value over the Fermi surface, and the interpretation of the results of Bate et al (1963) by Cotti (1964) shows that the mean free pa2h for electrical conductivity for electrons in the centre of (111) second-zone faces is 2 -2 1. The reduced value of 1 for ultrasonic attenuation may be ascribed to the more sharply varying Sf in this case.…”