Spin Degeneracy and Conductance Fluctuations in Open Quantum Dots
J. A. Folk, S. R. Patel, K. M. Birnbaum, C. M. Marcus, C. I. Duruoz, J. S. Harris
Abstract
The dependence of mesoscopic conductance fluctuations on parallel magnetic field is used as a probe of spin degeneracy in open GaAs quantum dots. The variance of fluctuations at high parallel field is reduced from the low-field variance (with broken time-reversal symmetry) by factors ranging from roughly two in a 1 square-micron dot at low temperature, to four or greater in 8 square-micron dots. The factor of two is expected for simple Zeeman splitting of spin degenerate channels. A possible explanation for the unexpected larger factors in terms of field-dependent spin orbit scattering is proposed.
Create a lesson
Related papers
Hall-Density Collapse as Direct Evidence for Percolative Conduction Onset in Monolayer MoS2 Transistors
R. V. Upadya, M. Introna, X. Wu et al.
Spin swapping mediated by spin-orbital textures in centrosymmetric multiorbital materials
Chengyuan Cai, Hanchen Wang, Rui-Chun Xiao et al.
Electrostatics of Chern junctions in a magnetic field
Robin Durand, Pascal Simon, Ion Garate
Spin Simulators based on Exciton-Polariton Waveguide Networks
Kevin Dini, Simone Zanotti, Timothy C. H. Liew
The quantized Hall effect knows which way the current flows: mirror covariance and rectification in a laterally asymmetric Hall bar
A. Siddiki
Floquet-Volkov spin polarization in spin-degenerate Antiferromagnets
Jiyang Fan, Dinghui Wang, Tongshuai Zhu