Research Areas

Our aims are to study the material science and photo property. At the same time, we develop cut-edging spectroscopy of soft X-ray in SPring-8. Because the soft X-ray is the most suitable light for the measurements of electron property, we research many kinds of materials by high resolution photoelectron spectrometry, fluorescent soft X-ray spectrometry and Raman scattering spectrometry. The high resolution photoelectron spectrometry is an efficient method to know the information of electron in a material. When we measure 3d and 4f state of strongly-correlated materials in Fermi surface, we can reveal the mechanism of super conductivity and phase transition of metallic insulator. The fluorescent soft X-ray spectrometry and the Raman scattering spectrometry are a method to know local state density of materials. We research electron state of hyper-complex materials like liquid and biological materials, though they have been never researched because there is no way to research.

Research Subject

1. Soft x-ray emission study on the electronic structure of solids, liquids and biomaterials using high energy-resolution soft x-ray emission spectrometer
2. Ultrahigh-resolution photoemission study on strongly correlated systems, thin films by pulsed laser deposition(PLD) and solid surfaces
3. Soft x-ray diffraction using highly coherent X-ray beam

Related links

1. RIKEN SPring-8 Center Website_Laboratories Page
2. Individual Website Laboratory Page

Press release

January 24 ,2011

Researchers unravel mystery how transparent thin membrane made of titanium dioxide transforms into magnet upon addition of cobalt

June 21 ,2010

World's first successful observation of the shape of molecular orbits in solution

March 8 ,2010

True identity of titan oxide uncovered in three temperature-dependent phases

February 17 ,2010

Origin of helical movement of electron spin in ironic nano-ordered thin membrane elucidated

October 01, 2009

Electronic states of molecule in aqueous solution observed for the first time using soft X-rays

August 11, 2009

Discovery of heterogeneous fine structure in liquid water thought to have been homogeneous

June 12, 2008

Ice shadow behind liquid water, disproving the common notion that water indicates normal continuous phase transitions, shown by the presence of two electronic states in liquid water

May 15, 2008

Elucidating the riddle of Professor Mott, Nobel prize winner for physics in 1977: why is nickel oxide not metallic?

April 07, 2008

The world's first discrimination of enantiomers by specially devised X-ray diffraction measurement
(Finding a mutually interactive diffraction principle between circularly polarized X-rays and chiral structure)

January 31, 2008

Puzzle solved for possible new class of ultra-thin microchips
Photoemission spectroscopic images help solve a puzzle that may pave the way toward ultra-thin, highly versatile microchips.

RIKEN RESEARCH

August 27,2010

Taking aim at a slippery target
Powerful synchrotron light captures never-before-seen electronic interactions of molecules dissolved in liquids

May 28,2010

Semiconducting sandwich filling retains its mystery
Solving part of the long-standing puzzle of the electronic properties of an enigmatic temperature phase of a titanium oxide may yield new clues

April 23,2010

Unveiling spiral magnetism
Photoemission experiments shed light on the origin of an enigmatic type of magnetism in iron

December 04, 2009

Stability reigns
First-ever observation of electronic states in aqueous acetic acid reveals water's unexpected influence

January 30,2009

Electronic recoil
First-ever observation of electronic states in aqueous acetic acid reveals water's unexpected influence
RIKEN researchers have revealed an unexpectedly large recoil of 'free' electrons emitted from a simple metal