University of Cambridge > Talks.cam > Mineral Sciences Seminars > Anomalous electron-(magneto)phonon interaction in doped LaOFeAs

  Browse A-Z

Log in

Googledetails Microsoftdetails

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹ️ Information

Anomalous electron-(magneto)phonon interaction in doped LaOFeAs

Download to your calendar using vCal

If you have a question about this talk, please contact .

First principles calculations show, in agreement with experiments, that undoped LaOFeAs is antiferromagnetic, and that it becomes non magnetic at a critical electron doping. In the doped non-magnetic phase, the increase in separation between the As and Fe planes, during the vibration of the $A_{1g}$ phonon, reintroduces an oscillatory non-collinear magnetism in the Fe atoms. This coupling of magnetism with vibrations induces anharmonicities and an electron-phonon interaction much larger than in the pure paramagnetic case. We propose that such enhanced interactions play an essential role in superconducting compounds close to an atiferromagnetic phase transition.

This talk is part of the Mineral Sciences Seminars series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Tom Ap Rees Room (Department of Plant Sciences CB2 3EA) FW11, William Gates Building. Zoom link: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon Centre for Mathematical Sciences, Meeting Room 4 (centre building, basement)

Other talks

Group Work Title to be confirmed Title to follow Decoding genomic chaos - a pancancer compendium of chromosomal instability Advances in Label-Free High-Resolution Molecular Imaging using J Series III Cluster SIMS Topic Film, TV shows for Medical Education, ‘The Wire’ as a case study
 

© 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity