边缘国家的签名在反铁磁范德瓦尔斯约瑟夫森十字路口中的签名
Celia González-Sánchez1,2,3, Ignacio Sardinero2,4, Jorge Cuadra1,2,3
1Departament of Condensed Matter Physics, Universidad Autónoma de Madrid, Madrid, Spain.
Advanced materials (Deerfield Beach, Fla.)
|January 30, 2026
概括
我们展示了使用范德瓦尔斯异构结构的新型超导量子干扰装置 (SQUID). 这些设备利用超导和反铁磁之间的相互作用,使得在高磁场中无需 lithography 的操作成为可能.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 量子现象是一种量子现象.
背景情况:
- 材料中的超导和磁性之间的相互作用对于探索新的量子相是至关重要的.
- 范德瓦尔斯 (vdW) 材料提供了一个独特的平台来研究竞争的订单,因为它们的层次结构.
- 了解非传统的超导性需要研究具有共存磁纹理的系统.
研究的目的:
- 为了研究超导和反铁磁vdW材料的接口出现的现象.
- 探索VDW异构结构作为超导量子干扰装置 (SQUID) 的潜力.
- 了解磁自旋纹理在调节超导特性中的作用.
主要方法:
- 制造单个的二化 (NbSe2) /二酸盐 (NiPS3) /NbSe2 约瑟夫森连接器.
- 在不同的磁场条件下,将设备行为描述为SQUID.
- 对抗铁磁绝缘体/超导体 (AFI/S) 接口的微观建模.
主要成果:
- NbSe2/NiPS3/NbSe2连接处表现出SQUID行为,这归因于NbSe2超导和NiPS3自旋纹理之间的相互作用.
- 这种SQUID行为被观察到到至少6特斯拉的平面磁场.
- 建模揭示了在AFI/S接口上的局部边缘状态,这些状态有助于主导运输道.
结论:
- 反铁磁绝缘体/超导体异构结构为设计新型超导现象提供了一个平台.
- 这些发现为制造能够在高磁场中工作的无光刻画SQUIDs建立了一条新路线.
- 超导和磁纹在VDW材料中的相互作用为先进的量子设备开辟了道路.
相关概念视频
Van der Waals Interactions
71.4K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
71.4K
Van der Waals Equation
6.3K
The ideal gas law is an approximation that works well at high temperatures and low pressures. The van der Waals equation of state (named after the Dutch physicist Johannes van der Waals, 1837−1923) improves it by considering two factors.
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
6.3K
Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation
39.0K
Thus far, the ideal gas law, PV = nRT, has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and molecular formula problems to determining the density and molar mass of a gas. However, the behavior of a gas is often non-ideal, meaning that the observed relationships between its pressure, volume, and temperature are not accurately described by the gas laws.
39.0K
Noncovalent Attractions in Biomolecules
64.9K
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
64.9K
Van de Graaff Generator
2.4K
Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
2.4K
Protein Folding
127.3K
Overview
127.3K


