Magnetic anisotropy from linear defect structures in correlated electron systems
نویسندگان
چکیده
Correlated electron systems, particularly iron-based superconductors, are extremely sensitive to strain, which inevitably occurs in the crystal growth process. Built-in strain of this type has been proposed as a possible explanation for experiments where nematic order observed at high temperatures corresponding nominally tetragonal phase superconductors. Strain is assumed produce linear defect structures, e.g. dislocations, quite similar O vacancy chainlets underdoped cuprate superconductor YBCO. Here we investigate simple microscopic model dislocations presence electronic correlations, create states that can drive magnetic anisotropy kind, if spin orbit interaction present. We estimate contribution these detected by current torque magnetometry both cuprates and Fe-based systems.
منابع مشابه
Kondo Lattice and Magnetic Properties in Strongly Correlated Electron Systems
We review here the magnetic properties of some strongly correlated electron systems and especially cerium and uranium compounds. The normal Kondo lattice model with a localized S = 1/2 spin can account for the Kondo-magnetism competition observed in cerium or ytterbium systems, while the underscreened Kondo lattice model with a localized S = 1 spin can well account for the ferromagnetism — Kond...
متن کاملMagnetic and Pairing Correlations in Correlated Electron Systems
Magnetic and superconducting pairing correlation functions in a general class of Hubbard models, the t-J model and a single-band Hubbard model with additional bond-charge interaction are investigated, respectively. Some rigorous upper bounds of the corresponding correlation functions are obtained. It is found that the decay of the spin-spin correlation function with temperature in the general H...
متن کاملInelastic magnetic X-ray scattering from highly correlated electron systems: La1.2Sr1.8Mn2O7, La0.7Sr0.3MnO3 and Fe3O4
Magnetic Compton profiles have been measured for the colossal magnetoresistance manganites La1.2Sr1.8Mn2O7 and La0.7Sr0.3MnO3, and for magnetite Fe3O4, along various crystallographic directions, over a wide range of temperatures and magnetic fields. The experimental results are interpreted via first-principles computations for the double layer manganite, La1.2Sr1.8Mn2O7, and by using a simple m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.103.245132