Ferroelectricity driven by the non-centrosymmetric magnetic ordering in multiferroic TbMn 2O 5: a first-principles study - Condensed Matter Materials ScienceReportar como inadecuado




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Abstract: The ground state structural, electronic and magnetic properties ofmultiferroic TbMn$ 2$O$ 5$ are investigated via first-principles calculations.We show that the ferroelectricity in TbMn$ 2$O$ 5$ is driven by thenon-centrosymmetric magnetic ordering, without invoking the spin-orbit couplingand non-collinear spins. The {\it intrinsic} electric polarization in thiscompound is calculated to be 1187 $nC\cdot$ cm$^{-2}$, an order of magnitudelarger than previously thought.



Autor: Chenjie Wang, Guang-Can Guo, Lixin He

Fuente: https://arxiv.org/







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