Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Miklos Gulacsi"'
Autor:
Miklos Gulacsi
Publikováno v:
physica status solidi (b). 252:371-379
We show that the correlated electrons in low dimensional rare-earth compounds give rise to a ferromagnetic phase. We use a bosonized version of the one-dimensional Anderson lattice model in Toulouse limit to characterize the properties of this emergi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdbdff34d69f40cd0e641eeab824f5ee
https://doi.org/10.1002/pssb.201451205
https://doi.org/10.1002/pssb.201451205
Autor:
Ferenc Simon, János Koltai, Viktor Zólyomi, Á. Rusznyák, Balázs Dóra, Miklos Gulacsi, Jenoe Kurti
Publikováno v:
physica status solidi (b). 246:2744-2749
We study the electron spin resonance (ESR) intensity in the Luttinger liquid phase of carbon nanotubes. The ESR measurables such as the signal intensity and the line-width are calculated in the framework of Luttinger liquid theory with broken spin ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36a50b644bda513f86af2728365159a5
https://doi.org/10.1002/pssb.200982301
https://doi.org/10.1002/pssb.200982301
Publikováno v:
physica status solidi (b). 245:2159-2163
We analyze a recent NMR experiments by Singer et al. Singer et al. Phys. Rev. Lett. 95,236403 (2005).], which showed a deviation from Fermi-liquid behavior in carbon nanotubes with an energy gap evident at low temperatures. A comprehensive theory for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9328f5554458805a2e65b84ea648810
https://doi.org/10.1002/pssb.200879606
https://doi.org/10.1002/pssb.200879606
Autor:
Miklos Gulacsi
Publikováno v:
Annals of Physics
We show that double-exchange mechanism is responsible for ferromagnetism in low dimensional rare-earth compounds. We use the bosonized version of the one-dimensional Anderson lattice model in Toulouse limit to characterize the properties of the emerg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd4433f82baa9dbff0a0897c804ea58f
https://hdl.handle.net/11858/00-001M-0000-0029-C08F-A
https://hdl.handle.net/11858/00-001M-0000-0029-C08F-A
Autor:
Miklos Gulacsi
Publikováno v:
Journal of Magnetism and Magnetic Materials
Using bosonization an effective Hamiltonian is derived for the one-dimensional Anderson lattice model in the Toulouse limit. The effective Hamiltonian exhibits ferromagnetic ground state in the intermediate coupling regime.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3e3fdd5a2e4ff2e03cbcc46b3e19799
https://hdl.handle.net/11858/00-001M-0000-0026-A1A5-3
https://hdl.handle.net/11858/00-001M-0000-0026-A1A5-3
Publikováno v:
The European Physical Journal B. 54:73-81
We present a non-perturbative study of an extended Falicov-Kimball model in one dimension. Working within the binary alloy interpretation, we include the spin of the itinerant electrons and a Hubbard interaction to model the inter-electron correlatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd630ba7372c64b3874949a00bd08479
https://doi.org/10.1140/epjb/e2006-00431-3
https://doi.org/10.1140/epjb/e2006-00431-3
Autor:
Miklos Gulacsi
Publikováno v:
Philosophical Magazine. 86:1907-1946
The Kondo lattice model is one of the canonical models used to study impurity effects in strongly correlated electron systems and has been the subject of intense study for many years. The Kondo lattice model describes the interaction between a band o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c858c4fe650621970a55ba59a5a9fcba
https://doi.org/10.1080/14786430500355045
https://doi.org/10.1080/14786430500355045
Autor:
Miklos Gulacsi
Publikováno v:
Advances in Physics. 53:769-937
The Kondo lattice model introduced in 1977 describes a lattice of localized magnetic moments interacting with a sea of conduction electrons. It is one of the most important canonical models in the study of a class of rare earth compounds, called heav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::760bb1e2b6ef6bbc5a3e633b3147ca87
https://doi.org/10.1080/00018730412331313997
https://doi.org/10.1080/00018730412331313997
Autor:
Miklos Gulacsi
Publikováno v:
Philosophical Magazine Letters. 84:607-623
A new variational scheme based on a modified Bethe–Peierls method is used to study the ground state properties of the one-dimensional t–J model. Expectation values are evaluated by cutting out a four-site cluster from a correlated Fermi sea, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d9d66ed4b88698cfb462178d59438ac
https://doi.org/10.1080/09500830512331325073
https://doi.org/10.1080/09500830512331325073
Autor:
Raymond Chan, Miklos Gulacsi
Publikováno v:
Philosophical Magazine. 84:1265-1279
The effective s–d spin interaction is derived exactly for the single-impurity Anderson model via a unitary transformation. This unitary transformation was calculated up to infinite order and no restrictions were imposed upon the coefficients of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f043dae0d4937422303592eb8606134e
https://doi.org/10.1080/14786430310001653107
https://doi.org/10.1080/14786430310001653107