论文标题
离子Mott-Peierls铁电的电荷孤子激发的实验验证TTF-CA
Experimental Verification of Charge Soliton Excitations in the Ionic Mott-Peierls Ferroelectric, TTF-CA
论文作者
论文摘要
固体中电荷，自旋和晶格的强耦合带来了新兴的基本激发，它们的交织在一起，在一个维度上，孤子被称为这样。电荷转让有机铁电TTF-CA已被认为是托管电荷孤子。但是，唯一的指控唯一的存在仍未得到验证。在这里，我们证明了TTF-CA的离子Mott-Peierls绝缘阶段中的电荷 - 传输差距比准颗粒激发的预期小的数量级，但是与电荷孤子激发完全一致。我们进一步建议，电荷和自旋孤子根据其共存而以相似的扩散系数移动。这些结果为紧急孤子的热激发提供了基础。
Strong coupling of charge, spin, and lattice in solids brings about emergent elementary excitations with their intertwining and, in one dimension, solitons are known as such. The charge-transferred organic ferroelectric, TTF-CA, has been argued to host charge solitons; however, the existence of the charge solitons remains unverified. Here, we demonstrate that the charge-transport gap in the ionic Mott-Peierls insulating phase of TTF-CA is an order of magnitude smaller than expected from quasiparticle excitations, however, being entirely consistent with the charge soliton excitations. We further suggest that charge and spin solitons move with similar diffusion coefficients in accordance with their coexistence. These results provide a basis for the thermal excitations of the emergent solitons.
