2014/10/31 by Rafael Sánchez, Björn Sothmann, Andrew N. Jordan · 99 citations
Physics and Astronomy · #Condensed matter physics #Hall effect #Magnetic field #Physics #Physics of Superconductivity and Magnetism #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quantum spin Hall effect #Spin (aerodynamics) #Thermoelectric effect #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.114.146801
published in Physical Review Letters 114(14), 146801 (American Physical Society) · 5 pages, 5 figures. Published version
openalex publication_date 2015/04/07 · arxiv created 2015/04/10 · arxiv updated 2015/04/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The thermoelectric properties of a three-terminal quantum Hall conductor are investigated. We identify a contribution to the thermoelectric response that relies on the chirality of the carrier motion rather than on spatial asymmetries. The Onsager matrix becomes maximally asymmetric with configurations where either the Seebeck or the Peltier coefficients are zero while the other one remains finite. Reversing the magnetic field direction exchanges these effects, which originate from the chiral nature of the quantum Hall edge states. The possibility to generate spin-polarized currents in quantum spin Hall samples is discussed.