Diamond Publications - Search Results

Search Again...

These results only include publications that have been reviewed and processed by Diamond Light Source. To also view papers that have not yet been processed click here.

You can use the folder icon under Actions to collate papers as required. You can then click on View Folder in the left-hand navigation to review and/or download your folder.

One item found (0 items not approved).

Instruments / Technical Area	Publication Details	Published	Actions
I06-Nanoscience (XPEEM) I09-Surface and Interface Structural Analysis	Emergent and robust ferromagnetic-insulating state in highly strained ferroelastic LaCoO3 thin films Dong Li , Hongguang Wang , Kaifeng Li , Bonan Zhu , Kai Jiang , Dirk Backes , Larissa S. I. Veiga , Jueli Shi , Pinku Roy , Ming Xiao , Aiping Chen , Quanxi Jia , Tien-Lin Lee , Sarnjeet S. Dhesi , David O. Scanlon , Judith L. Macmanus-Driscoll , Peter A. Van Aken , Kelvin H. L. Zhang , Weiwei Li Nature Communications 14 DOI: 10.1038/s41467-023-39369-6 Diamond Proposal Number(s): [25425, 26901, 29616, 31069] Open Access Show Abstract ▼ Abstract: Transition metal oxides are promising candidates for the next generation of spintronic devices due to their fascinating properties that can be effectively engineered by strain, defects, and microstructure. An excellent example can be found in ferroelastic LaCoO3 with paramagnetism in bulk. In contrast, unexpected ferromagnetism is observed in tensile-strained LaCoO3 films, however, its origin remains controversial. Here we simultaneously reveal the formation of ordered oxygen vacancies and previously unreported long-range suppression of CoO6 octahedral rotations throughout LaCoO3 films. Supported by density functional theory calculations, we find that the strong modification of Co 3d-O 2p hybridization associated with the increase of both Co-O-Co bond angle and Co-O bond length weakens the crystal-field splitting and facilitates an ordered high-spin state of Co ions, inducing an emergent ferromagnetic-insulating state. Our work provides unique insights into underlying mechanisms driving the ferromagnetic-insulating state in tensile-strained ferroelastic LaCoO3 films while suggesting potential applications toward low-power spintronic devices.	Jun 2023

Instruments / Technical Area

Publication Details

Published

Actions

I06-Nanoscience (XPEEM)
I09-Surface and Interface Structural Analysis

Emergent and robust ferromagnetic-insulating state in highly strained ferroelastic LaCoO3 thin films