[超导国家重点实验室学术报告]晶格动力学中的量子几何效应

The wavefunction of phonons encodes rich quantum information, including topological and chiral properties. In phonon systems, “chirality” carries distinct meanings: topological chirality defined in k-space and rotational chirality associated with nonzero angular momentum. 

[超导国家重点实验室学术报告]Tailoring the Electronic Structure of Quantum Materials under Extreme Conditions

The ability to manipulate the electronic structure of quantum materials is pivotal to discovering emergent quantum phases and developing future quantum technologies. External tuning parameters-including dimensional confinement, electrostatic doping, and high magnetic fields-provide powerful and complementary means to engineer electronic states and uncovering their underlying properties.

[超导国家重点实验室学术报告]vdW magnet spintronics

Electrical control of quantum magnetic states is essential for both academic interest and next-generation spintronic device applications, which is one central focus of quantum materials and devices. Very recently, 2D van-der-Waals (vdW) magnetic materials have rapidly flourished to become star members in the field of 2D materials and device physics, providing enormous opportunities to open and advance diverse research directions from fundamental physics to device applications

[超导国家重点实验室学术报告]Symmetry Manipulation to Unlock Exotic Superconductivity对称性调控：迈向非常规超导

晶体结构及其对称性是决定材料物理性质的关键因素，这在过渡金属二硫族化合物（TMD）超导体中尤为突出。一方面，通过插层调控TMD的层间距，可在体相材料中实现二维超导；另一方面，调节TMD层间堆叠方式，则能诱导出反演对称性破缺的超导态，并伴随丰富的物理现象。此外，手性结构因缺乏镜像对称面与反演中心，同样可破坏空间反演对称性。因此，基于晶体结构对称性调控及手性结构体系的探索，是发现新颖超导物性的有效策略。

[超导国家重点实验室学术报告]石墨烯凯库勒超晶格的表界面构筑与关联物态调控

借助各种表界面超晶格的构造来实现新颖量子物态的构筑是近年来凝聚态物理研究中的热点问题。以石墨烯为代表，通过构造具有(√3×√3)R30°超晶格周期的凯库勒畸变（Kekulé-distortion）可以实现狄拉克锥向布里渊区中心折叠并打开能隙。本报告将介绍多种表界面元素掺杂方式实现石墨烯凯库勒超晶格的构筑与狄拉克电子调控。

[超导国家重点实验室学术报告]Finite element models for superconducting systems

Given the recent improvements of their physical properties, high-temperature superconductors are increasingly used in many applications ranging from particle accelerators and fusion magnets, to electrical machines and power cables. 

[超导国家重点实验室学术报告]Magnetic landscape of superconducting resonators under radio-frequency excitation

Superconducting resonators are essential components in quantum circuits and highly sensitive sensors. However, their performance is often compromised by magnetic flux penetration, as the interaction of flux quanta and the induced radio-frequency (RF) currents in the superconducting thin film leads to significant energy dissipation. 

[超导国家重点实验室学术报告]二维自旋电子材料中的拓扑输运与磁电阻效应

二维自旋电子材料因其独特的层间自由度和丰富的自旋相关现象，成为探索新奇量子输运行为和发展高性能自旋电子器件的重要平台。本报告将介绍我们在该领域的最新进展。首先，我们通过自旋过滤效应实现了巨磁阻：利用A型反铁磁半导体构建串联自旋过滤器，获得超过8000%的磁电阻

[超导国家重点实验室学术报告]Search for orbital magnetism in the kagome superconductor CsV₃Sb₅ using neutron diffraction

The kagome metal, CsV₃Sb₅, exhibits both a charge density wave phase below 94K with a 2x2 doubling of the unit cell and a superconducting phase below 2.5K. These materials also show strong anomalous Hall effect, but no spin ordering has been found in these materials both by muon spin spectroscopy and neutron diffraction. 

[超导国家重点实验室学术报告]Hidden Magnetic Texture in the Pseudogap Phase of the High-T_c YBa₂Cu₃O_6+x

In many quantum materials, strong electron correlations lead to the emergence of new states of matter. In particular, the study in the last decades of the complex phase diagram of high temperature superconducting cuprates highlighted intra-unit-cell electronic instabilities appearing at the pseudogap temperature.