Change search
ReferencesLink to record
Permanent link

Direct link
Theoretical Prediction and Spectroscopic Fingerprints of an Orbital Transition in CeCu2Si2
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology. Ecole Polytech, France.
Ecole Polytech, France .
Ecole Polytech, France .
Ecole Polytech, France Coll France, France University of Geneva, Switzerland .
2014 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 112, no 10, 106407- p.Article in journal (Refereed) Published
Abstract [en]

We show that the heavy-fermion compound CeCu2Si2 undergoes a transition between two regimes dominated by different crystal-field states. At low pressure P and low temperature T the Ce 4f electron resides in the atomic crystal-field ground state, while at high P or T, the electron occupancy and spectral weight is transferred to an excited crystal-field level that hybridizes more strongly with itinerant states. These findings result from first-principles dynamical-mean-field-theory calculations. We predict experimental signatures of this orbital transition in x-ray spectroscopy. The corresponding fluctuations may be responsible for the second high-pressure superconducting dome observed in this and similar materials.

Place, publisher, year, edition, pages
American Physical Society , 2014. Vol. 112, no 10, 106407- p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-106021DOI: 10.1103/PhysRevLett.112.106407ISI: 000332690700006OAI: diva2:712944
Available from: 2014-04-17 Created: 2014-04-17 Last updated: 2014-04-22

Open Access in DiVA

fulltext(1901 kB)62 downloads
File information
File name FULLTEXT01.pdfFile size 1901 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text
By organisation
Department of Physics, Chemistry and BiologyThe Institute of Technology
In the same journal
Physical Review Letters
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 62 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 34 hits
ReferencesLink to record
Permanent link

Direct link