2020/06/25 by F. A. F. Santana, Fernando A. F. Santana, J. M. da Silva +4
Chemistry · Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Chemistry #Condensed matter physics #Electron #Magnetic properties of thin films #Mesoscopic physics #Physics #Polarization (electrochemistry) #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #Spin Hall effect #Spin polarization #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.102.041107
published as Phys. Rev. B 102, 041107(R) (2020) · Accepted for publication as a Rapid Communication in Physical Review B
arxiv created 2020/06/25 · openalex publication_date 2020/07/06 · arxiv updated 2020/07/07 · openalex created_date 2020/07/10 · openalex updated_date 2026/08/05
We investigate a disorderly mesoscopic device that supports spin-orbit interaction. The system is connected to four semi-infinite leads embedded in the Landauer-Buttiker setup for quantum transport and, according to our analysis, exhibits spin Hall angle fluctuations. We show analytically and numerically the fingerprint of the universal fluctuation of the polarization mediated by the conversion of charge current into spin current. Our investigation shows the complete compatibility of our analytical and numerical results with the most recent experiments. Furthermore, we show nonzero and universal features of spin Hall effect in Rashba two-dimensional electron gas with disorder. All the results show the relevance of microscopic parameters for electronic transport with charge-spin conversion and, in many cases, inevitably lead to universal numbers.