论文标题
通过抽水配对的狄拉克少坚元。
Dirac magnons pairing via pumping
论文作者
论文摘要
我们研究了将木胶在蜂窝状晶格上的木魔区域的木核钻头泵送。特别是，我们考虑二阶Suhl过程，由于镁质之间的相互作用，由于吸收了两个电磁波量子，因此产生了一对镁。我们引入了木棍对的库珀梯子的玻色粒类似物，该木棍对可增强在狄拉克点的配对。由于Dirac木元素的配对，系统变得不稳定，以形成具有零或减少磁化的磁性状态 - Dirac Magnon配对状态。在这种情况下，泵的谐振频率等于狄拉克点的能量。我们的估计表明，可以在Crie温度附近的Crbr $ _ {3} $或Crcl $ _ {3} $ Ferromagnet中找到Dirac Magnon配对状态。
We study pumping of magnons to the Dirac points of magnon's Brillouin zone of a ferromagnet on a honeycomb lattice. In particular, we consider second-order Suhl process, when due to interaction between magnons, a pair of magnons is created due to absorption of two electromagnetic wave quanta. We introduce a bosonic analog of the Cooper ladder for the magnon pair, which is shown to enhance the pairing of magnons at the Dirac points. As a result of pairing of the Dirac magnons, the system becomes unstable towards formation of a magnetic state with zero or reduced magnetization - the Dirac magnon paired state. In this case the resonant frequency of the pump equals to that of energy of the Dirac points. Our estimates suggest that the Dirac magnon paired state can be found in the CrBr$_{3}$ or CrCl$_{3}$ ferromagnet below in vicinity of the Curie temperature.
