Center Photoemission electron microscopy PEEM image with linearly polarized xrays showing antiferromagnetic order Bottom PEEM with circularly polarized xrays showing parallelantiparallel magnetic moments ID: 936018
Download Presentation The PPT/PDF document "Top: Piezoresponse force microscopy (PFM..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Top: Piezoresponse force microscopy (PFM) image of laser-induced domain structure.Center: Photo-emission electron microscopy (PEEM) image with linearly polarized x-rays, showing antiferro-magnetic order.Bottom: PEEM with circularly polarized x-rays, showing parallel/antiparallel magnetic moments.
Publication about this research: Y.-D. Liou, Y.-Y. Chiu, R.T. Hart, C.-Y. Kuo, Y.-L. Huang, Y.-C. Wu, R.V. Chopdekar, H.-J. Liu, A. Tanaka, C.-T. Chen, C.-F. Chang, L.H. Tjeng, Y. Cao, V. Nagarajan, Y.-H. Chu, Y.-C. Chen, and J.-C. Yang, Nat. Mater. 18, 580 (2019). Work was performed at Lawrence Berkeley National Laboratory, ALS Beamline 11.0.1. Operation of the ALS is supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences program.
Tuning Material Properties with Laser Light
Scientific Achievement
Researchers demonstrated that coupled electronic and magnetic properties in a material can be repeatably tuned using laser light.
Significance and Impact
The results suggest the possibility of creating microelectronic devices that use a laser beam to erase and rewrite bits of information in materials engineered for random-access memory and data storage
.
Research Details
Soft x-ray PEEM revealed that laser light can simultaneously control ferroelectricity and antiferromagnetism in multiferroic BiFeO
3
.
Moving the laser spot allows domain structures to be repeatably erased and rewritten.