强关联系统中d波配对的非平衡探索研究

批准号:
11974039
项目类别:
面上项目
资助金额:
63.0 万元
负责人:
Rubem Mondaini
依托单位:
学科分类:
强关联体系
结题年份:
2023
批准年份:
2019
项目状态:
已结题
项目参与者:
Rubem Mondaini
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中文摘要
本课题主要研究强关联电子系统的非平衡配对特性。具体来说,主要目标包括:1)识别和表征在平衡态中的出现d波对称性的区域;2)对系统的哈密顿量引入时间上的扰动,使得d波配对增强。这项研究主要依赖于数值和理论方法的独特组合,这也是PI与其合作者所擅长、并推动近期研究的主要方法。即利用数值计算,如含时的Lanczos方法与时间演化的矩阵乘积态方法等,得到孤立系统unbiased的非平衡性质表征。我们的研究方案得益于两个方面的实验进展:1)基于光晶格囚禁的冷原子所带来的高度可控/可调的量子模拟,包括系统的时间演化性质;2)基于泵浦探测实验带来的对凝聚态系统的超快时间扰动。目前,研究平衡条件下的d波配对机制及其导致的铜氧化物高温超导陷入了某种僵局。打破这种僵局需要更具创新性的思路,使我们能更好地理解超导相与其他有序相的相互作用,并进一步实现对超导的加强。
英文摘要
This project will focus on the out-of-equilibrium pairing properties of strongly interacting systems. Specifically, the main objectives are to 1) identify and characterize regimes where a d-wave pairing symmetry is manifest in equilibrium and 2) bring rise time-variations on the system’s Hamiltonian which will induce an enhanced response of this property. This research will mostly rely on the unique combination of numerical and theoretical methods that the PI, in collaboration with his co-PI’s, have advanced in their recent works. Namely, on the unbiased out-of-equilibrium characterization of properties of isolated systems via numerical techniques, as time-dependent Lanczos and time-evolving matrix product states methods. Our proposal is rooted on two main experimental aspects: i) The degree of tunability that quantum emulators based on cold atoms trapped in optical lattices offer, including their time-evolution characterization, and ii) on recently improved methods that provide a way to induce ultrafast variations in condensed matter systems, based on pump and probe experiments..The current stalemate on the research of the d-wave pairing mechanism leading to high-temperature superconductivity in the family of cuprate compounds under equilibrium conditions require innovative approaches that may allow a better understanding on its possible interplay with other phases, as well as protocols which permit its maximization. This project will take advantage of previous indications of pairing formation based on models in the presence of strong interactions, and promote time-perturbations in these Hamiltonians, interpolating regimes with the clear goal of promoting a systematically larger signal of this correlation. The intricate interdependence of orders that appears in cuprates, as charge-density waves, spin-waves and pairing, ultimately resulting in superconductivity, may benefit from a dynamical approach where one is able to modify or suppress the onset of each of them. This may shed light on the ongoing discussion of whether the interplay of these phases aid or are inimical to pairing. Our project, with the direct goal of emulation in cold atomic settings, will pinpoint the necessary conditions for this characterization in controlled environments and will significantly advance the role of atomic physics in the exploration of novel many-body physics. In summary, the insights gained in this research will have inter-disciplinary character and directly benefit and advance our understanding of high-temperature superconductivity.
期刊论文列表
专著列表
科研奖励列表
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专利列表
DOI:10.1103/physrevb.108.035131
发表时间:2023-02
期刊:Physical Review B
影响因子:3.7
作者:Minpeng Liang;Yong Yang;Chen Cheng;R. Mondaini
通讯作者:Minpeng Liang;Yong Yang;Chen Cheng;R. Mondaini
DOI:10.1103/physrevb.109.035126
发表时间:2023-11
期刊:Physical Review B
影响因子:3.7
作者:Wan-Xiu He;Rubem Mondaini;Hong-Gang Luo;Xiaoqun Wang;Shijie Hu
通讯作者:Wan-Xiu He;Rubem Mondaini;Hong-Gang Luo;Xiaoqun Wang;Shijie Hu
DOI:10.1103/physrevb.102.094423
发表时间:2020-09
期刊:Physical Review B - Condensed Matter and Materials Physics
影响因子:--
作者:Sabyasachi Tarat;Jian Li;Richard Scalettar;Rubem Mondaini
通讯作者:Rubem Mondaini
DOI:10.1103/physrevresearch.2.013085
发表时间:2019-07
期刊:PHYSICAL REVIEW RESEARCH
影响因子:4.2
作者:Zhu Xingchuan;Dong Shiying;Lin Yang;Mondaini Rubem;Guo Huaiming;Feng Shiping;Scalettar Richard T.
通讯作者:Scalettar Richard T.
DOI:10.1103/physrevb.108.085134
发表时间:2023-05
期刊:Physical Review B
影响因子:3.7
作者:Can Wang;T. Yi;Jian Li;R. Mondaini
通讯作者:Can Wang;T. Yi;Jian Li;R. Mondaini
平衡及非平衡条件下极化超流体的维度过渡
- 批准号:12111530010
- 项目类别:国际(地区)合作与交流项目
- 资助金额:15万元
- 批准年份:2021
- 负责人:Rubem Mondaini
- 依托单位:
关联超流体中的赝能隙相变研究
- 批准号:11674021
- 项目类别:面上项目
- 资助金额:60.0万元
- 批准年份:2016
- 负责人:Rubem Mondaini
- 依托单位:
国内基金
海外基金
