Advanced Photon Source

An Office of Science National User Facility

Science and Research Highlights

When an Exciton Acts Like a Hole - August 26, 2014

When an Exciton Acts Like a HoleWhen is an electron hole like a quasiparticle? More specifically, what happens when a single electron hole is doped into a two-dimensional quantum antiferromagnet? Quasiparticle phenomena in such a system are predicted by theory, but have eluded observation, complicating the understanding of electron behavior in high-temperature superconducting cuprates. Experimenters working at the U.S. Department of Energy′s Advanced Photon Source have cast new light on this classic problem in condensed matter physics and opened a new pathway for the study of high-temperature superconductors.

New Physics in a Copper-Iridium Compound - August 6, 2013

New Physics in a Copper-Iridium CompoundAn unexpected magnetic behavior within the transition-metal compound Sr3CuIrO6 has been revealed by research at the U.S. Department of Energy Office of Science’s Advanced Photon Source, results that may eventually lead to new materials for applications such as electronic memory devices and quantum computation.

New Physics in Iridium Compounds - December 10, 2012

New Physics in Iridium CompoundsUnraveling the complexities of spin-orbital coupling could someday lead to new high-temperature superconductors and workable quantum computers via an elusive phase of matter called a “quantum spin liquid.” Two groups of researchers utilizing x-ray beamlines at the U.S. Department of Energy’s Advanced Photon are delving into the new physics required to develop just such a material.

Ultrafast Imaging of Electron Waves in Graphene - November 9, 2010

Ultrafast Imaging of Electron Waves in GrapheneThe fastest “movies” ever made of electron motion have been captured by researchers using the U.S. Department of Energy’s Advanced Photon Source at Argonne and the Frederick Seitz Materials Research Laboratory at the University of Illinois. The movies, which were created by scattering x-rays off of graphene, show that the interaction among graphene’s electrons is surprisingly weak.