Magnetic field effects on spin texturing in a quantum wire with Rashba spin-orbit interaction

摘要: A quantum wire with strong Rashba spin-orbit interaction is known to exhibit spatial modulation of spin density along its width owing coupling between subbands caused by the interaction. This as texturing. Here, we show that a transverse external magnetic field introduces additional complex features in texturing, some which reflect intricate details underlying energy dispersion relations spin-split subbands. One particularly intriguing feature 90\ifmmode^\circ\else\textdegree\fi{} phase shift modulations two orthogonal components density, observed at moderate strengths and when only lowest level occupied electrons. Its origin lies fact acts an effective whose strength proportional electron's velocity.