2009/01/31 by Andreas Hackl, Subir Sachdev
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Cuprate #Doping #Electrode #Electron #Fermi gas #Fermi level #Fermi surface #Magnetic and transport properties of perovskites and related materials #Nernst effect #Nernst equation #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum mechanics #Semiclassical physics #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.79.235124
published as Phys. Rev. B 79, 235124 (2009) · 9 pages, 5 figures, revised version as accepted by Phys. Rev. B, changed several citations and references
arxiv created 2009/06/12 · openalex publication_date 2009/06/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We calculate the normal-state Nernst signal in the cuprates resulting from a reconstruction of the Fermi surface due to spin-density wave order. An order parameter consistent with the reconstruction of the Fermi surface detected in electron-doped materials is shown to sharply enhance the Nernst signal close to optimal doping. Within a semiclassical treatment, the obtained magnitude and position of the enhanced Nernst signal agrees with Nernst measurements in electron-doped cuprates. Our result is mainly caused by the role of Fermi-surface geometry under influence of a spin-density wave gap. We discuss also possible roles of short-ranged magnetic order in the normal-state Nernst effect and the Fermi-surface reconstruction observed by photoemission spectroscopy.