Interplay between local electron correlation and Janh-Teller electron-phonon interaction
نویسندگان
چکیده
منابع مشابه
A NUMERICAL RENORMALIZATION GROUP APPROACH FOR AN ELECTRON-PHONON INTERACTION
A finite chain calculation in terms of Hubbard X-operators is explored by setting up a vibronic Harniltonian. The model conveniently transformed into a form so that in the case of strong coupling a numerical renormalization group approach is applicable. To test the technique, a one particle Green function is calculated for the model Harniltonian
متن کاملElectron Correlation and Jahn-Teller Interaction in Manganese Oxides
The interplay between the electron repulsion U and the Jahn-Teller electronphonon interation ELR is studied with a large d model for the ferromagnetic state of the manganese oxides. These two interactions collaborate to induce the local isospin (orbital) moments and reduce the bandwidth B. Especially the retardation effect of the Jahn-Teller phonon with the frequency Ω is effective to reduce B,...
متن کاملInterplay between electron-phonon and Coulomb interactions in cuprates
Evidence for strong electron-phonon coupling in high-Tc cuprates is reviewed, with emphasis on the electron and phonon spectral functions. Effects due to the interplay between the Coulomb and electron-phonon interactions are studied. For weakly doped cuprates, the phonon self-energy is strongly reduced due to correlation effects, while there is no corresponding strong reduction for the electron...
متن کاملFrictional magnetodrag between spatially separated two- dimensional electron systems: Coulomb versus phonon mediated electron–electron interaction
We study the frictional drag due to Coulomb and phonon mediated electron–electron interaction in a double layer electron system exposed to a perpendicular magnetic field. We calculate the transresistivity as a function of magnetic field, temperature, and inter-layer spacing L: We find the strikingly different magnetic field and temperature dependence of the transresistivity for L 1⁄4 30 and 200...
متن کاملa numerical renormalization group approach for an electron-phonon interaction
a finite chain calculation in terms of hubbard x-operators is explored by setting up a vibronic harniltonian. the model conveniently transformed into a form so that in the case of strong coupling a numerical renormalization group approach is applicable. to test the technique, a one particle green function is calculated for the model harniltonian
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 B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.73.113109