2016/03/31 by Natalie Tillack, Jonathan R Yates, Jonathan R. Yates +2
Materials Science · Physics and Astronomy · #Ab initio #Advanced Condensed Matter Physics #Condensed matter physics #Cycloid #Magnetic and transport properties of perovskites and related materials #Magnetic field #Multiferroics and related materials #Physics #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.94.100405
published as Phys. Rev. B 94, 100405 (2016) · 5 pages with 2 figures, 2 pages supplementary material
openalex created_date 2016/06/24 · openalex publication_date 2016/09/28 · arxiv created 2016/09/29 · arxiv updated 2016/10/05 · openalex updated_date 2026/08/05
We present a thorough density functional theory study of the magnetoelectric (ME) effect in Cr2O3. The spin-lattice ME tensor \ensuremathα was determined in the low-field and spin flop (SF) phases, using the method of dynamical magnetic charges, and found to be the sum of three distinct components. Two of them, a large relativistic ``cycloidal'' term and a small longitudinal term, are independent on the spin orientation. The third, only active in the SF phases, is also of relativistic origin and arises from magnetic-field-induced chirality, leading to a nontoroidal ME response.