2006/02/01 by P. J. Jensen, K. H. Bennemann, Dirk K. Morr +3 · 1 citation
Mathematics · Medicine · Physics and Astronomy · #Anatomy #Anisotropy #Antiferromagnetism #Condensed matter physics #Field (mathematics) #Geometry #Magnetic field #Magnetic moment #Magnetic properties of thin films #Magnetization #Mathematics #Medicine #Moment (physics) #Perpendicular #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Theoretical and Computational Physics #Transverse plane #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.73.144405
arxiv created 2006/02/01 · openalex publication_date 2006/04/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the magnetic reorientation in a two-dimensional anisotropic antiferromagnet due to a transverse magnetic field. Using a many-body Green's function approach, we show that the magnetization component perpendicular to the applied field (and along the easy axis of the antiferromagnet) initially increases with increasing field strength. We show that this unexpected result arises from the suppression of quantum and thermal fluctuations in the antiferromagnet. Above the N'eel temperature, this effect leads to a reappearance of a magnetic moment along the easy axis.