Scattering of Electrons by the Deformation Potential in Doped InSb

Abstract

An analysis of the experimental data for InSb and of the theoretical considerations used for the determination of the deformation potential constant of the conduction band el is made. It is shown that the correctly calculated value of 1~~1 is about 30 eV. The small values of ~E J obtained in some works by observing transport phenomena in the hot electron region a t lattice temperatures of 4.2 K in samples with electron densities n from 1015 to lo1' for which the Boltzmann transport equation is valid, are caused by a distortion of the bottom of the conduction band due to fluctuations of the impurity potential. ~3 KoTopbIx onpeaenmacb I<oHcTaHTa ae@opMaunonHoro noTeHunana ~O H L I II~OBOJJEI-MOCTH E~. l l o~a a a~o , TO IcoppeIiTHo BbImcneHHoe 311a'1e~~le 1~~1 ~J I H~K O K 30 eV. Manbre npOBeJJ6H aHaJIH3 3KCIIel)HMeIITaJIbHbIX DaHHbIX AJIII InSb $1 TeOPeTEWeCI<HX paCseTOB, ~H~Y~I I M~ \ E l l , IIOJIyqeIIHbIe 113 H3MePeHHfi KPiHCTH' IeCKllX 3@@eKTOB B O~J I~C T H ropasllx BJICKTpOHOB IIpH 4,2 K Ha o6pa3uax C KOHUeHTpaUmHMH 3JIeIcTpOIIOB n = loi5 no loi7 Cm-3, AJIII KOTOPbIX KHHeTHqeCKOe JJpaBIIeHHe EOJIbUMaHa IIpllMeHllMo, CBR3aIIbI c mxameIImxMu AHa OHM IIPOBOAHMOCTH @nyKTyauHmti noTesrlHajra npuiveceii.

The Thermoelectric Properties of Bismuth Telluride

“…The larger this ratio, more deformation potential scattering would dominate charge transport with less influence due to ionized impurity scattering. This ratio for Bi 2 Te 3 is 9 × 10 2 times larger than that for Si and 5 × 10 6 times larger than that for InSb illustrating why Bi 2 Te 3 is relatively insensitive to impurities in the typical range of operating temperatures (Table ) . While the large dielectric constant of Bi 2 Te 3 does play significant role in minimizing the effects of ionized impurities, but the effective masses, deformation potentials, and soft lattice are also important.…”

The Electron Mobility and Thermoelectric Power in InSb at Atmospheric and Hydrostatic Pressures

“…e.g. [2,4,181). I n the present paper we use data of [8] where the dependence of F~ on I' is deduced from the optical measurements in the temperature range 4.2 K < T < < 290 K. We describe the experimental dependence by a polynomial of the third degree with coefficients obtained by the fitting procedure (see Table 1).…”

“…I n [2] the value of the deformation potential constant C in InSb was determined to be 14.6 eV. This value was controverted by authors of [4] who claimed C to be equal t o 30 eV. Thus it is seen that the old and well-known controversy concerning the value of C in InSb still exists.…”

Γ(phi → η′γ)/Γ(phi → ηγ) and the pseudoscalar mixing angle

“…The LFQM is a fully relativistic quark model in which a consistent treatment of quark spins and the centre-of-mass motion can be carried out, and has been applied to calculate various form factors previously [14][15][16][17][18][19][20]. This model has many advantages, for example, the light-front wavefunction is manifestly boost invariant as it is expressed in terms of the momentum fraction variables (in '+' component) in analogue to the parton distributions in the infinite momentum frame.…”