Project

Back to overview

Electronic and Magnetic Ordering Phenomena at metal-insulator transitions

English title Electronic and Magnetic Ordering Phenomena at metal-insulator transitions
Applicant Staub Urs
Number 105211
Funding scheme Project funding (Div. I-III)
Research institution Synchrotron Lichtquelle Schweiz Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.10.2004 - 30.09.2005
Approved amount 57'425.00
Show all

Keywords (10)

SLS; Swiss Light Source; metal-insulator transitions; orbital ordering; magnetic ordering; charge; ordering; perovskites; phase transitions; x-ray

Lay Summary (English)

Lead
Lay summary
The microscopic origin of temperature induced transition frommetal-to-insulators are studied. The question is addressed, how and wheredoes the carriers (electrons) freeze out, when the material is gettinginsulating. Materials to be studied are mainly transition metal oxides,materials related to perovskites of type ABO3. To study this effect indetail, resonant X-ray scattering based on synchrotron radiation is usedat the newly built Swiss Light Source at the Paul Scherrer Institute. Thistechnique allows us to study ordering phenomena of electrons and orbitals(aspheric electron distribution around the individual ions), which areoften occurring together with the order of magnetic moments at themetal-to-insulator transition. These studies are combined with studies onthe crystalline structure of these oxides, which is usually also affectedby such transitions. The fundamental understanding of the origin of thesephase transitions, triggered by electronic ordering phenomena, isimportant by itself, but does have impact for the understanding ofhigh-temperature superconductivity and the effect of colossal-magnetoresistance.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Associated projects

Number Title Start Funding scheme
66922 Electronic and Magnetic Ordering Phenomena at metal-insulator transitions 01.08.2002 Project funding (Div. I-III)
109165 Electronic and Magnetic Ordering Phenomena at metal-insulator transitions 01.01.2006 Project funding (Div. I-III)

-