Strong electron-lattice coupling in correlated intermetallic compounds near valence- and structural instabilities (A01+)

相关金属间化合物中价态和结构不稳定性附近的强电子晶格耦合 (A01)

• 批准号: 444804369
• 金额: --
• 依托单位: Physikalisches Institut
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/444804369?language=en
• 关键词: Strong; electron; lattice; coupling; correlated

The project A01 (Wolf/Lang) will study the close interlocking of electronic and lattice degrees of freedom upon pressure-tuning systems into the vicinity of phase transitions. Special attention will be devoted to the expected occurrence of critical elasticity around the valence transition in EuPd2Si2 and related variants. A second focus will be the possibility to induce novel phases, such as valence-fluctuation-induced superconductivity, near the transition associated with the collapse of the tetragonal unit cell in Eu(Fe1−xNix)2P2.

项目A01(Wolf/Lang)将研究压力调谐系统进入相变附近时电子和晶格自由度的紧密连锁。将特别关注EuPd2Si2及其相关变体在价态转变附近预期出现的临界弹性。第二个焦点将是在Eu(Fe1−xNix)2P2中与四方晶胞坍塌相关的相变附近诱导新相的可能性，例如价涨落诱导的超导电性。