Bose-Einstein condensation of magnons in magnetic films

磁性薄膜中磁振子的玻色-爱因斯坦凝聚

• 批准号: 16851434
• 负责人: Professor Dr. Sergej O. Demokritov, Ph.D.
• 金额: --
• 依托单位: Institut für Angewandte Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/16851434?language=en
• 关键词: Bose; Einstein; condensation; magnons; magnetic

Subject of the project is magnons in a non-equilibrium state, created in a ferromagnet using external pumping. The main goal of the project is experimental observation of the Bose-Einstein-Condensation (BEC) of the magnon gas, i.e., the effect, which has been recently predicted theoretically. The distribution of magnons over the wavevector space and their possible condensation close to a given value of the wavevector will be studied by means of Brillouin light scattering. The utilization of the novel Brillouin light scattering technique with a sensitivity to the phase of magnon, very recently developed by us, allows the determination of the coherence characteristics of the magnon gas and the unambiguous corroboration of the BEC-transition.

该项目的主题是在非平衡状态下的磁振子，使用外部泵浦在铁磁体中产生。该项目的主要目标是对磁振子气体的玻色-爱因斯坦凝聚（BEC）进行实验观测，即，这是最近在理论上预测到的。通过布里渊光散射，我们将研究磁振子在波矢空间的分布以及它们在波矢给定值附近可能的凝聚。利用新的布里渊光散射技术与磁振子的相位的敏感性，最近开发的我们，允许的相干特性的磁振子气体的确定和明确的确证的BEC过渡。

项目成果

Spatially non-uniform ground state and quantized vortices in a two-component Bose-Einstein condensate of magnons

• DOI: 10.1038/srep00482
• 发表时间: 2012-06-29
• 期刊: SCIENTIFIC REPORTS
• 影响因子: 4.6
• 作者: Nowik-Boltyk, P.;Dzyapko, O.;Demokritov, S. O.
• 通讯作者: Demokritov, S. O.