• Media type: E-Article
  • Title: Weak (anti)localization in tubular semiconductor nanowires with spin-orbit coupling
  • Contributor: Kammermeier, Michael [Author]; Wenk, Paul [Author]; Schliemann, John [Author]; Heedt, Sebastian [Author]; Schäpers, Thomas [Author]
  • Published: APS, 2016
  • Published in: Physical review / B 93(20), 205306 (2016). doi:10.1103/PhysRevB.93.205306
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevB.93.205306
  • ISSN: 0556-2805; 1550-235X; 1098-0121; 0163-1829; 2469-9950; 1095-3795; 2469-9969
  • Description: We compute analytically the weak (anti)localization correction to the Drude conductivity for electrons in tubular semiconductor systems of zinc-blende type. We include linear Rashba and Dresselhaus spin-orbit coupling (SOC) and compare wires of standard growth directions ⟨100⟩,⟨111⟩, and ⟨110⟩. The motion on the quasi-two-dimensional surface is considered diffusive in both directions: transversal as well as along the cylinder axis. It is shown that Dresselhaus and Rashba SOC similarly affect the spin relaxation rates. For the ⟨110⟩ growth direction, the long-lived spin states are of helical nature. We detect a crossover from weak localization to weak antilocalization depending on spin-orbit coupling strength as well as dephasing and scattering rate. The theory is fitted to experimental data of an undoped ⟨111⟩ InAs nanowire device which exhibits a top-gate-controlled crossover from positive to negative magnetoconductivity. Thereby, we extract transport parameters where we quantify the distinct types of SOC individually.
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  • Access State: Open Access