The phase diagram of manganites combines magnetic, orbital, lattice and charge ordering. We underline the essential role of strong cooperative Jahn-Teller interactions in selecting the magnetic structure and fine tuning by external parameters. First, the realistic Jahn-Teller distortions is LaMnO(3) controls the orbital order and consistently explain the layered antiferromagnetic ordering. Secondly, the phase diagram of half-doped manganites of the family La(0.5)Ca(0.5)MnO(3) can be reproduced, with the observed ferromagnetic, charge-ordered (CE) antiferromagnetic and paramagnetic insulating phases. RI Grilli, Marco/C-6309-2009; Fratini, Simone/A-4692-2009
Crucial role of Jahn-Teller distortions in stabilizing magnetic ordering in insulating manganite phases / Fratini, S; Capone, Massimo; Grilli, M; Feinberg, D.. - 554:(2001), pp. 371-378.
Crucial role of Jahn-Teller distortions in stabilizing magnetic ordering in insulating manganite phases
Capone, Massimo;
2001-01-01
Abstract
The phase diagram of manganites combines magnetic, orbital, lattice and charge ordering. We underline the essential role of strong cooperative Jahn-Teller interactions in selecting the magnetic structure and fine tuning by external parameters. First, the realistic Jahn-Teller distortions is LaMnO(3) controls the orbital order and consistently explain the layered antiferromagnetic ordering. Secondly, the phase diagram of half-doped manganites of the family La(0.5)Ca(0.5)MnO(3) can be reproduced, with the observed ferromagnetic, charge-ordered (CE) antiferromagnetic and paramagnetic insulating phases. RI Grilli, Marco/C-6309-2009; Fratini, Simone/A-4692-2009I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
