Anomalous spin-dependent behavior of one-dimensional subbands
Anomalous spin-dependent behavior of one-dimensional subbands
We report an electron interaction effect in $\mathrm{Ga}\mathrm{As}∕\mathrm{Al}\mathrm{Ga}\mathrm{As}$ quantum wires. Using dc-bias spectroscopy, we show that large and abrupt changes occur to the energies of spin-down (lower energy) states as they populate. The effect is not observed for spin-up energy states. At $B=0$, interactions have a pronounced effect, in the …