01474nas a2200193   4500008004100000020001400041245010700055210006900162260001200231300001200243490000700255520087300262100001801135700002001153700001801173700002001191700002001211856004901231       1994                        eng d  a0038-110100aDC TRANSPORT IN INTENSE, INPLANE TERAHERTZ ELECTRIC-FIELDS IN AL(X)GA(1-X)AS HETEROSTRUCTURES AT 300-K0 aDC TRANSPORT IN INTENSE INPLANE TERAHERTZ ELECTRICFIELDS IN ALXG  cApr-Jun  a693-6950 v373 a<p>We report 300 K studies of the dependence of the in-plane, d.c. conductivity, sigma(d.c.) (E(omega)), of a quasi 2D electron gas on the amplitude E(omega) and frequency of intense, far-infrared fields (omega/2pi = 0.24-3.5 THz). We measure sigma(d.c.) (E(omega) parallel-to E(d.c.)), where E(d.c.) is a small sensing field, and observe a monotonic decrease in sigma(d.c.) with increasing E(omega). Although a simple scaling ansatz collapses the measured sigma(d.c.) (E(omega)) data onto a single curve for frequencies from 0.25-3.45 THz (at low to moderate scaled fields), the decrease in conductivity is substantially more rapid than expected from comparison to similar data taken by Masselink et al. [Solid-St. Electron. 31, 337 (1988)] at 35 GHz. We tentatively attribute this difference to effects of a high-frequency modulation in the electron temperature.</p>1 aAsmar, N., G.1 aMarkelz, A., G.1 aGwinn, E., G.1 aHopkins, P., F.1 aGossard, A., C.  uhttps://markelz.physics.buffalo.edu/node/260