TY - JOUR
T1 - Giant magnetoelectric effect in the Jeff = 1/2 Mott insulator Sr2IrO4
AU - Chikara, S.
AU - Korneta, O.
AU - Crummett, W. P.
AU - Delong, L. E.
AU - Schlottmann, P.
AU - Cao, G.
PY - 2009/10/19
Y1 - 2009/10/19
N2 - Our magnetic, electrical, and thermal measurements on single crystals of the Jeff =1/2 Mott insulator, Sr2 IrO4, reveal a giant magnetoelectric effect (GME) arising from a frustrated magnetic/ferroelectric state whose signatures are: (1) a strongly enhanced electric permittivity that peaks near an observed magnetic anomaly at 100 K, and (2) a large (∼100%) magnetodielectric shift that occurs near a metamagnetic transition. The GME hinges on a spin-orbit gapping of 5d bands rather than the magnitude and spatial dependence of magnetization, as traditionally accepted.
AB - Our magnetic, electrical, and thermal measurements on single crystals of the Jeff =1/2 Mott insulator, Sr2 IrO4, reveal a giant magnetoelectric effect (GME) arising from a frustrated magnetic/ferroelectric state whose signatures are: (1) a strongly enhanced electric permittivity that peaks near an observed magnetic anomaly at 100 K, and (2) a large (∼100%) magnetodielectric shift that occurs near a metamagnetic transition. The GME hinges on a spin-orbit gapping of 5d bands rather than the magnitude and spatial dependence of magnetization, as traditionally accepted.
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U2 - 10.1103/PhysRevB.80.140407
DO - 10.1103/PhysRevB.80.140407
M3 - Article
AN - SCOPUS:71249140240
SN - 1098-0121
VL - 80
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 14
M1 - 140407
ER -