Skip to main content
Research Highlight | Materials Science Division

Intertwined density waves in a quasi-2D metallic oxide

In a study published in Nature Communications, researchers report the mechanism behind a metal-metal transition in a quasi-2D metallic oxide.

Scientific Achievement

We discovered that coexisting sinusoidal charge- and spin density waves drive a metal-metal transition in trilayer La4Ni3O10; we attribute density wave formation to Fermi surface gapping.

Significance and Impact

Our findings establish quasi-2D La4Ni3O10  as the missing link between the latent charge- and spin-order of 3D metallic nickelates and the fully-expressed order found in 2D insulating stripe-phase nickelates.

Research Details

  • High-resolution single-crystal X-ray and neutron diffraction revealed charge- and spin density waves.
  • Distinctive patterns of superlattice reflections lead to proposed models of the sinusoidal modulations in charge and spin sectors.
  • First principles calculations implicate Fermi surface nesting as the driving mechanism.
     

DOI10.1038/s41467-020-19836-0

Download this highlight

Argonne National Laboratory seeks solutions to pressing national problems in science and technology. The nation’s first national laboratory, Argonne conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies, universities, and federal, state and municipal agencies to help them solve their specific problems, advance America’s scientific leadership and prepare the nation for a better future. With employees from more than 60 nations, Argonne is managed by UChicago Argonne, LLC for the U.S. Department of Energy’s Office of Science.

The U.S. Department of Energy’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time. For more information, visit https://​ener​gy​.gov/​s​c​ience.