Magnetization process in a frustrated plaquette dimer

Autor: Elias, F., Arlego, Marcelo José Fabián, Lamas, Carlos Alberto

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

The magnetic phase diagram of a plaquette dimerized and frustrated antiferromagnetic ladder system is studied by using a combination of numerical and analytical techniques. For the strongly frustrated regime, series expansions and bond operator techn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2b9148d1f72a348031a636b7fdddc648
http://sedici.unlp.edu.ar/handle/10915/63841

Path integral approach to order by disorder selection in partially polarized quantum spin systems

Autor: Daniel Carlos Cabra, Gerardo Luis Rossini, Carlos Alberto Lamas, Pierre Pujol

Publikováno v: The European Physical Journal B: Condensed Matter and Complex Systems
The European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2015, 88, pp.176-. ⟨10.1140/epjb/e2015-60211-6⟩

In this paper we study the frustrated J1−J2quantum Heisenberg model on the square lattice for J2>J1/2, in a magnetic field. In this regime the classical system is known tohave a degenerate manifold of lowest energy configurations, where standard th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61bf82ec43033896b3d9c190dbb7311a
https://link.springer.com/article/10.1140/epjb/e2015-60211-6