Probing electronic and spin excitations in superconducting La3Ni2O7/SrLaAlO4 thin films

ESRF Portal2028-01-01 更新2026-04-23 收录

超导材料光谱学

凝聚态物理

数据链接：

https://doi.esrf.fr/10.15151/ESRF-ES-2220633270 数据链接链接失效反馈

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资源简介：

Recently, ambient-pressure superconductivity (SC) with Tc>40 K has been realized in La3Ni2O7 (LNO) thin films grown on SrLaAlO4 (SLAO) substrates that applies in-plane compressive epitaxial strain on LNO, making possible spectroscopic studies on LNO in the superconducting state employing soft X-rays. Our previous RIXS experiments on LNO/LAO, LNO/LSAT and LNO/STO performed at ID32, ESRF revealed that the spectral weight and energy of spin excitations are enhanced by the in-plane compressive strain, and their electronic structure could be effectively tuned by epitaxial strain, suggesting that spin fluctuations likely play a crucial role in mediating electron pairing in the superconducting phase of LNO. However, the spin dynamics and the detailed orbital energy landscape in LNO/SLAO remain to be explored experimentally. We aim to utilize RIXS to probe the spin and orbital excitations of LNO/SLAO thin films, with the goal of gaining deeper insights into the mechanisms underlying SC in LNO.

提供机构：

Paul Scherrer Institut, Photon Science Division, Forschungstrasse 111, 5232 Villigen, Switzerland; Paul Scherrer Institut, Photon Science Division, Forschungstrasse 111, 5232, Villigen, SWITZERLAND; Beijing Normal University, The Center of Advanced Quantum Studies, 19 Xinjiekouwai Street, 100875 Beijing, China; Beijing Normal University, The Center of Advanced Quantum Studies, 19 Xinjiekouwai Street, 100875, Beijing, CHINA; Beijing Normal University, School of Physics and Astronomy, Beijing Norm, 19 Xinjiekouwai Street ,BEIJING, 100875, Beijing, CHINA

创建时间：

2028-01-01