External Environment Dependent Spin and Orbital Exchange Interactions
نویسندگان
چکیده
منابع مشابه
Spin and orbital exchange interactions from Dynamical Mean Field Theory
We derive a set of equations expressing the parameters of the magnetic interactions characterizing a strongly correlated electronic system in terms of singleelectron Green’s functions and self-energies. This allows to establish a mapping between the initial electronic system and a spin model including up to quadratic interactions between the effective spins, with a general interaction (exchange...
متن کاملSpin and orbital angular momentum exchange in binary star systems
We present a comprehensive model for studying the angular momentum (AM) evolution in binary star systems, taking into account: (i) evolutionary effects of both component stars on the Pre-Main Sequence (PMS), on the Main Sequence (MS) and during the (initial) ascent onto the giant branch; (ii) spin-orbital AM exchange through ‘tidal’ interactions; and (iii) AM loss from one or both component sta...
متن کاملTheory of orbital state and spin interactions in ferromagnetic titanates
A spin-orbital superexchange Hamiltonian in a Mott insulator with t2g orbital degeneracy is investigated. More specifically, we focus on a spin ferromagnetic state of the model and study a collective behavior of orbital angular momentum. Orbital order in the model occurs in a nontrivial way—it is stabilized exclusively by quantum effects through the order-from-disorder mechanism. Several energe...
متن کاملLong-range electron spin-spin interactions from unparticle exchange.
Unparticles as suggested by Georgi are identities that are not constrained by dispersion relations but are governed by their scaling dimension d. Their coupling to particles can result in macroscopic interactions between matter that are generally an inverse nonintegral power of distance. This is totally different from known macroscopic forces. We use the precisely measured long-ranged spin-spin...
متن کاملSpin dependent elastic antiproton interactions
Relativistic formulae for spin averaged and spin dependent one photon exchange differential cross sections are developed for spin half fermion fermion elastic scattering. Spin transfer cross sections are important for the Polarized Antiproton eXperiments (PAX) project at GSI Darmstadt. In particular, cross sections for polarization transfer in antiproton electron p̄ e↑ −→ p̄ ↑ e and antiproton pr...
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: Journal of Modeling and Simulation of Materials
سال: 2020
ISSN: 2582-2365
DOI: 10.21467/jmsm.3.1.79-83