First Observation of Noble Ferro-type Orbital States revealed by Resonant X-ray Scattering Interference Technique

Jul 08, 2005

In the contrast with many researches on orbital ordering in 3d and 4f electron systems, few studies were done on orbital ordering in 4d electron system so far. Among 4d electron systems, it is well known that Ca2-xSrxRuO4 possesses the rich and novel ground states such as Mott transition accompanied with orbital ordering for x=0, heavy mass Fermi liquid behavior near the critical point for x=0.5, and the orbital degenerated triplet superconductivity for x=2.

Dr. Masato Kubota (Photon Factory/KEK) Prof. Youichi Murakami (Tohoku Univ.), Dr. Masaichiro Mizumaki (SPring-8/JASRI), Dr. Satoru Nakatsuji (Kyoto Univ.), and co-workers have successfully detected ferro-type orbital states in Ca2-xSrxRuO4, by resonant x-ray scattering interference technique at the beamline BL46XU of SPring-8, which is the first observation in 4d Mott transition system. It is found that the underlying orbital dependent properties are the key to clarify complex phase diagram of Ca2-xSrxRuO4.

Published in Physical Review Letters, 95, 026401 (2005). Masato Kubota, Youichi Murakami, Masaichiro Mizumaki, Hiroyuki Ohsumi, Naoshi Ikeda, Satoru Nakatsuji, Hideto Fukazawa, and Yoshiteru Maeno. "Ferro-type Orbital State in Mott Transition System Ca2-xSrxRuO4 Studied by Resonant X-ray Scattering Interference Technique"

Source: Photon Factory/KEK, SPring-8

Explore further: Femto-snapshots of reaction kinetics: Bonding behavior of iron pentacarbonyl experimentally decoded

Related Stories

Flocks of starlings ride the wave to escape

3 hours ago

Why does it seem as if a dark band ripples through a flock of European starlings that are steering clear of a falcon or a hawk? It all lies in the birds' ability to quickly and repeatedly dip to one side to avoid being attacked. ...

Blue Freedom uses power of flowing water to charge

4 hours ago

Good friends may decide to tell you something that is not true but nonetheless sustaining: Nothing is impossible. That was the case of Blue Freedom co-founder who asked his friend if it would be possible ...

Recommended for you

Quantum teleportation on a chip

3 hours ago

The core circuits of quantum teleportation, which generate and detect quantum entanglement, have been successfully integrated into a photonic chip by an international team of scientists from the universities ...

Cooling massive objects to the quantum ground state

3 hours ago

Ground state cooling of massive mechanical objects remains a difficult task restricted by the unresolved mechanical sidebands. Now researchers have proposed an optomechanically-induced-transparency cooling ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.