Direkt zum Inhalt

Kammermeier, Michael ; Wenk, Paul ; Schliemann, John ; Heedt, Sebastian ; Schäpers, Thomas

Weak (anti)localization in tubular semiconductor nanowires with spin-orbit coupling

Kammermeier, Michael, Wenk, Paul , Schliemann, John, Heedt, Sebastian and Schäpers, Thomas (2016) Weak (anti)localization in tubular semiconductor nanowires with spin-orbit coupling. Phys. Rev. B 93, p. 205306.

Date of publication of this fulltext: 25 Nov 2016 08:27
Article
DOI to cite this document: 10.5283/epub.34877


Abstract

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: ...

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.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitlePhys. Rev. B
Publisher:AMER PHYSICAL SOC
Place of Publication:COLLEGE PK
Volume:93
Page Range:p. 205306
DateMay 2016
InstitutionsPhysics > Institute of Theroretical Physics
Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann
Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Thomas Niehaus
Physics > Institute of Theroretical Physics > Chair Ferdinand Evers
Identification Number
ValueType
10.1103/PhysRevB.93.205306DOI
Keywords2D ELECTRON-GAS; INAS NANOWIRES; QUANTUM-WELLS; MAGNETORESISTANCE; ANTILOCALIZATION; HETEROSTRUCTURES; GROWTH; RINGS; FIELD; GAAS;
Dewey Decimal Classification500 Science > 530 Physics
500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-348776
Item ID34877

Export bibliographical data

Owner only: item control page

nach oben