Chaudhuri Sayan, Chen You-Sheng, Lin Jauyn Grace
Center for Condensed Matter Science, National Taiwan University, Taipei 10617 Taiwan.
Center of Atomic Initiatives for New Materials, National Taiwan University, Taipei 10617, Taiwan.
ACS Omega. 2023 May 1;8(19):16694-16699. doi: 10.1021/acsomega.2c07928. eCollection 2023 May 16.
The magnetic pinning properties of a ferromagnet/superconductor hybrid structure consisting of a LaSrMnO(LSMO) layer with various thicknesses on top of a fixed thickness YBaCuO (YBCO) layer are investigated in this article. The existence of a weakly magnetic layer was identified at the interface between YBCO and LSMO by a ferromagnetic resonance (FMR) study. Magnetic moment and anisotropy of the interfacial layer were probed using the angular-dependent FMR study. This layer gives rise to an additional flux pinning contribution to the bulk magnetic pinning from the LSMO layer. Our study provides insight into the complex interface physics in the LSMO/YBCO bilayer system, promoting a new pathway for the development of novel flux pinning-related functionality.
本文研究了由固定厚度的钇钡铜氧（YBCO）层顶部具有不同厚度的镧锶锰氧（LSMO）层组成的铁磁体/超导体混合结构的磁钉扎特性。通过铁磁共振（FMR）研究，在YBCO和LSMO之间的界面处确定了一个弱磁性层的存在。使用角度相关的FMR研究探测了界面层的磁矩和各向异性。该层对LSMO层的体磁钉扎产生了额外的磁通钉扎贡献。我们的研究深入了解了LSMO/YBCO双层系统中复杂的界面物理，为新型磁通钉扎相关功能的开发开辟了一条新途径。
