Dependence of the Dresselhaus spin-orbit interaction on the quantum well width

作者：Walser M P^*; Siegenthaler U; Lechner V; Schuh D; Ganichev S D; Wegscheider W; Salis G

来源：Physical Review B, 2012, 86(19): 195309.

DOI：10.1103/PhysRevB.86.195309

We measured the Dresselhaus spin-orbit interaction coefficient beta(1) for (001)-grown GaAs/Al0.3Ga0.7As quantum wells for six different well widths omega between 6 and 30 nm. The varying size quantization of the electron wave vector z-component %26lt; k(z)(2)%26gt; (pi/w)(2) influences beta(1) = -gamma %26lt; k(z)(2)%26gt; linearly. The value of the bulk Dresselhaus coefficient gamma = (-11 +/- 2) eV angstrom(3) was determined. We discuss the absolute sign of the Lande g factors and the effective momentum scattering times.

• 出版日期2012-11-12