Landau theory of domain wall magnetoelectricity

Landau theory of domain wall magnetoelectricity

Maren Daraktchiev,1,2,* Gustau Catalan,1,3,† and James F. Scott1,4,‡ 1Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United Kingdom 2Department of Health, 330 Wellington House, 133-155 Waterloo Road, London SE1 8UG, United Kingdom 3ICREA and CIN2, CSIC-ICN, Campus Universitat Autonoma de Barcelona, Bellaterra 08193, Spain 4Department of Physics, Cavend...

Theory of Domain Wall Dynamics under Current

The present information technology is based on electron transport and magnetism. Magnetism has been most successful as high-density storages such as hard disks. In magnetic storages, read-out mechanism of the information had so far several significant developments. The oldest idea of detecting magnetic information would be to use Faraday’s induction law by scanning a read head (a coil) on the s...

Landau on Number Theory 401 Landau on Number Theory

Vorlesungen iiber Zahlentheorie. By Edmund Landau. Volume I: Aus der elementaren unà additiven Zahlentheorie. xii+360 pp. Volume II: Aus der analytischen und geometrischen Zahlentheorie. vii+308 pp. Volume III : Aus der algebraischen Zahlentheorie und iiber die Fermatsche Vermutung. vii+341 pp. Leipzig, S. Hirzel, 1927. These three excellently printed and arranged volumes form an addition of th...

(0,2) Landau-ginzburg Theory ⋆

A large class of (0,2) Calabi-Yau σ-models and Landau-Ginzburg orbifolds are shown to arise as different “phases” of supersymmetric gauge theories. We find a phenomenon in the Landau-Ginzburg phase which may enable one to understand which Calabi-Yau σ-models evade destabilization by worldsheet instantons. Examples of (0,2) LandauGinzburg vacua are analyzed in detail, and several novel features ...

Superconductivity: Ginzburg-Landau Theory