金属-绝缘体纳米织构的谷控光开关
Valley-controlled photoswitching of metal-insulator nanotextures
AI总结：
该研究利用谷选择性偏振光掺杂，在低电子加热下实现 Peierls 绝缘体纳米畴的定点金属化，并延长亚稳金属态寿命。
摘要：
空间非均匀性与相竞争是强关联材料的标志性特征，有望在纳米尺度上提供可调谐功能。将关联绝缘体光诱导切换为金属态已得到充分证实。然而，光激发通常缺乏选择亚波长畴并控制最终织构的特异性。在这里，我们采用谷选择性光掺杂来驱动织构型 Peierls 绝缘体的畴特异性淬灭。偏振激发利用关联能隙处准一维态的各向异性，以最小的电子加热启动绝缘体到金属的转变。我们发现，避免耗散有助于实现畴特异性载流子限制、对纳米织构相的控制，以及亚稳金属态寿命的延长。作为对现有操控方案的补充，谷选择性光激发将能够超越热力学限制激活电子相分离，促进光控隐藏态、工程异质结构和偏振敏感渗流网络的实现。
英文摘要：
Spatial heterogeneity and phase competition are hallmarks of strongly-correlated materials, promising tunable functionality on the nanoscale. Light-induced switching of a correlated insulator to a metallic state is well established. However, optical excitation generally lacks the specificity to select sub-wavelength domains and control final textures. Here, we employ valley-selective photodoping to drive the domain-specific quench of a textured Peierls insulator. Polarized excitation leverages the anisotropy of quasi-one-dimensional states at the correlated gap to initiate an insulator-to-metal transition with minimal electronic heating. We find that averting dissipation facilitates domain-specific carrier confinement, control over nanotextured phases, and a prolonged lifetime of the metastable metallic state. Complementing existing manipulation schemes, valley-selective photoexcitation will enable the activation of electronic phase separation beyond thermodynamic limitations, facilitating optically-controlled hidden states, engineered heterostructures, and polarization-sensitive percolation networks.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
