Scattering studies of emergent phenomena at extreme conditions of magnetic field and temperature.

磁场和温度极端条件下突发现象的散射研究。

• 批准号: EP/J016977/1
• 负责人: Elizabeth Blackburn
• 金额: $ 79.67万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FJ016977%2F1
• 关键词: Scattering; studies; emergent; phenomena; extreme

This proposal asks for funding to construct a dilution refrigerator insert for the 17 T cryomagnet previously constructed with EPSRC funds (grant EP/G027161). This cryomagnet is currently being used at neutron scattering facilities throughout the European Economic Area, and is available for use by user groups unconnected with Birmingham, with any necessary support to be provided by us. With the dilution refrigerator insert, the cryomagnet will be able to cover a much larger range of desired experimental materials, without compromising the work that can already be done over the temperature range 2 K to 330 K. At present, this is the largest horizontal magnetic field available for use at any neutron scattering facility. Because small angle neutron scattering is of use to a large number of research communities, being able to move the cryomagnet around from facility to facility maximizes its utility, as it would not be in use full time at any one particular institution. At present, this equipment has been used, amongst other things, to study the fundamental properties of cuprate superconductors and iron-based superconductors and the effects of magnetic fields on colloidal suspensions of fd virus. We propose to use it to look for anticipated single Landau level effects brought about by high fields in bismuth, as well as flux lines in Pauli-limited superconductors and non-centrosymmetric superconductors, and quantum magnetic ordering. By extending the temperature range downwards by almost two orders of magnitude, we will be able to extend the research programme into a region where many emergent condensed matter phenomena occur. For instance, heavy fermion superconductors provide fascinating examples of unconventional superconducting phases arising from novel interactions. With the mK region accessible, the cryomagnet is well suited to the critical fields typical for these materials, so that most of their superconducting phase diagrams can be explored. This also makes it easier to investigate the effects of Pauli-limited superconductivity in heavy fermion and pnictide materials. In addition, this grant will support use of all of the cryomagnet's capabilities by both ourselves and other user groups. As an example, some of our collaborators are very interested in using the cryomagnet to extend studies of magnetic alignment of mesoscopic structures in suspension. We will also be commissioning the cryomagnet at several other facilities, including synchrotron sources, with necessary adaptations to be driven by our collaborators.

该提案要求提供资金，为先前使用EPSRC资金（EP/G 027161）建造的17 T低温磁体建造稀释制冷机插入件。这种低温磁体目前正在整个欧洲经济区的中子散射设施中使用，并可供与伯明翰无关的用户组使用，我们将提供任何必要的支持。有了稀释制冷器插件，低温磁体将能够覆盖更大范围的所需实验材料，而不会影响已经在2 K至330 K温度范围内完成的工作。目前，这是可用于任何中子散射设施的最大水平磁场。由于小角度中子散射对大量研究团体有用，因此能够在设施之间移动低温磁体使其效用最大化，因为它不会在任何特定机构中全职使用。目前，该设备已被用于研究铜酸盐超导体和铁基超导体的基本性质，以及磁场对fd病毒胶体悬浮液的影响。我们建议使用它来寻找预期的单朗道水平所带来的高场铋，以及磁通线在保利限制超导体和非中心对称超导体，和量子磁有序。通过将温度范围向下扩展近两个数量级，我们将能够将研究计划扩展到许多新兴凝聚态现象发生的区域。例如，重费米子超导体提供了由新的相互作用产生的非常规超导相的迷人例子。随着mK区域的接近，低温磁体非常适合这些材料的典型临界场，因此可以探索它们的大多数超导相图。这也使得研究重费米子和磷属元素化物材料中的泡利极限超导效应变得更加容易。此外，该资助将支持我们和其他用户组使用cryomagnet的所有功能。作为一个例子，我们的一些合作者非常感兴趣的是使用cryomagnet扩展悬浮液中的介观结构的磁排列的研究。我们还将在其他几个设施中调试低温磁体，包括同步加速器源，并由我们的合作者进行必要的调整。

项目成果

Probing superconducting order in overdoped Ca x Y 1 - x Ba 2 Cu 3 O 7 by neutron diffraction measurements of the vortex lattice

通过涡晶格的中子衍射测量探测过掺杂 Ca x Y 1 - x Ba 2 Cu 3 O 7 中的超导级

• DOI: 10.1103/physrevb.108.144511
• 发表时间: 2023
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Cameron A

High magnetic field studies of the vortex lattice structure in YBa 2 Cu 3 O 7

YBa 2 Cu 3 O 7 涡旋晶格结构的强磁场研究

• DOI: 10.1103/physrevb.90.054502
• 发表时间: 2014
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Cameron A

Fermi Surface Reconstruction and Quantum Oscillations in Underdoped YBa$_2$Cu$_3$O$_{7-x}$ Modeled in a Single Bilayer with Mirror Symmetry Broken by Charge Density Waves

欠掺杂 YBa$_2$Cu$_3$O$_{7-x}$ 中的费米表面重构和量子振荡在单个双层中建模，镜像对称性被电荷密度波破坏

• DOI: 10.48550/arxiv.1510.02603
• 发表时间: 2015
• 作者: Briffa A

X-ray diffraction studies of charge density waves in cuprate superconductors: A brief review

铜酸盐超导体中电荷密度波的 X 射线衍射研究：简要回顾

• DOI: 10.1016/j.physb.2014.11.055
• 发表时间: 2015
• 期刊: Condensed Matter
• 影响因子: 1.7
• 作者: Blackburn E

Magnetization reversal in Nd-Fe-B based nanocomposites as seen by magnetic small-angle neutron scattering

• DOI: 10.1063/1.4776708
• 发表时间: 2013-01-14
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Bick, Jens-Peter;Honecker, Dirk;Michels, Andreas
• 通讯作者: Michels, Andreas