Engineering quantum electronic materials by phonon-polariton metamaterials

通过声子极化超材料工程量子电子材料

• 批准号: 2005096
• 负责人: Hanyu Zhu
• 金额: $ 45万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2005096&HistoricalAwards=false
• 关键词: Engineering; quantum; electronic; materials; phonon

Quantum mechanics describes electrons in materials as both particles and wavefunctions. In “quantum materials” the entangled electronic wavefunctions exhibit properties that differ from conventional metals, semiconductors or insulators. Controlling these properties not only advances our understanding of the fundamental interactions among electrons, but also promises new devices for next-generation information technology. Light contains oscillating electric field, so at the right frequency light can simultaneously strongly couple with motions of both electrons and atoms. These coupled electrons and atoms may enter entirely different states from those in existing materials. This project designs hybrid materials with both enhanced light-matter interactions and quantum correlations. The characterization of these materials dynamically engineered by light potentially provides insights into emergent phenomena like unconventional superconductivity. Besides scientific impact, this program trains the next-generation STEM workforce through research opportunities for community college students. It will also raise awareness of quantum technology to a broader audience by a new course in quantum materials engineering.Non-equilibrium open systems such as Floquet states, present in time-periodic fields, emerge as new platforms to create quantum materials on demand. The dynamic nature of such systems makes it possible to override stability constraints and induce new electronic structures in old materials. Experimental investigation of optically driven states at the presence of electronic correlation is particularly important due to the rich physics and the difficulty in theoretical treatment. However, studying coherent dynamics in solids faces practical challenges such as interband transition and lattice dissipation. This project seeks to overcome some of the challenges by coupling materials supporting phonon-polaritons and materials hosting gapped interacting electrons. Exciting the phonon-polariton with resonant pulsed light provides the necessary strong field and fast coherent evolution that outpaces thermalization. Using metamaterials consisting of micro-resonators, the light intensity can exceed those commonly achievable by table-top sources. Meanwhile, the frequency of phonon-polaritons in the metamaterial is chosen to reduce both the multi-photon transition and the field-induced ionization. The transient changes of electronic energy levels, transport properties and dissipation dynamics are subsequently probed by time-resolved spectroscopy.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

量子力学将材料中的电子描述为粒子和波函数。在“量子材料”中，纠缠的电子波函数表现出与传统金属、半导体或绝缘体不同的性质。控制这些性质不仅可以促进我们对电子之间基本相互作用的理解，而且还可以为下一代信息技术提供新的设备。光包含振荡电场，因此在正确的频率下，光可以同时与电子和原子的运动强烈耦合。这些耦合的电子和原子可能进入与现有材料完全不同的状态。该项目设计了具有增强的光-物质相互作用和量子相关性的混合材料。这些由光动态设计的材料的特性可能会为非常规超导性等新兴现象提供见解。除了科学影响，该计划通过为社区大学生提供研究机会来培训下一代STEM劳动力。它还将通过量子材料工程的新课程向更广泛的受众提高对量子技术的认识。非平衡开放系统，如Floquet状态，存在于时间周期场中，作为新的平台出现，以根据需求创造量子材料。这种系统的动态性质使得有可能超越稳定性约束，并在旧材料中诱导新的电子结构。由于存在电子关联时光驱动态的物理性质丰富，理论处理困难，实验研究显得尤为重要。然而，研究固体中的相干动力学面临着实际的挑战，如带间跃迁和晶格耗散。该项目旨在通过耦合支持声子极化激元的材料和承载带隙相互作用电子的材料来克服一些挑战。用共振脉冲光激发声子极化激元提供了必要的强场和超过热化的快速相干演化。使用由微谐振器组成的超材料，光强度可以超过桌面光源通常可实现的光强度。同时，选择超材料中声子极化激元的频率，以减少多光子跃迁和场致电离。电子能级的瞬态变化，输运性质和耗散动力学随后探测时间分辨spectroscopic.This奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。

项目成果

Intrinsic helical twist and chirality in ultrathin tellurium nanowires

• DOI: 10.1039/d1nr01442k
• 发表时间: 2021-05-13
• 期刊: NANOSCALE
• 影响因子: 6.7
• 作者: Londono-Calderon, Alejandra;Williams, Darrick J.;Pettes, Michael T.
• 通讯作者: Pettes, Michael T.

Piezoelectricity across 2D Phase Boundaries

跨越二维相界的压电

• DOI: 10.1002/adma.202206425
• 发表时间: 2022
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Puthirath, Anand B.;Zhang, Xiang;Krishnamoorthy, Aravind;Xu, Rui;Samghabadi, Farnaz Safi;Moore, David C.;Lai, Jiawei;Zhang, Tianyi;Sanchez, David E.;Zhang, Fu
• 通讯作者: Zhang, Fu

Pathways of Exciton Triggered Hot‐Carrier Injection at Plasmonic Metal−Transition Metal Dichalcogenide Interface

• DOI: 10.1002/adom.202100070
• 发表时间: 2022-01
• 期刊: Advanced Optical Materials
• 影响因子: 9
• 作者: Xiewen Wen;Weipeng Wang;Xiang Zhang;Hailong Chen;S. Jia;Y. Gong;Weibing Chen;Yanfeng Wang;Hanyu Zhu;Junrong Zheng;P. Ajayan;J. Lou

Properties and device performance of BN thin films grown on GaN by pulsed laser deposition

脉冲激光沉积在 GaN 上生长的 BN 薄膜的特性和器件性能

• DOI: 10.1063/5.0092356
• 发表时间: 2022
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Biswas, Abhijit;Xu, Mingfei;Fu, Kai;Zhou, Jingan;Xu, Rui;Puthirath, Anand B.;Hachtel, Jordan A.;Li, Chenxi;Iyengar, Sathvik Ajay;Kannan, Harikishan
• 通讯作者: Kannan, Harikishan