Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Strong-coupling electron-phonon superconductivity in noncentrosymmetric quasi-one-dimensional K2Cr3As3

MPG-Autoren
/persons/resource/persons140949

Subedi,  Alaska
Theory of Complex Materials, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Externe Ressourcen

http://dx.doi.org/10.1103/PhysRevB.92.174501
(Verlagsversion)

http://arxiv.org/abs/1508.00825
(Preprint)

Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)

PhysRevB.92.174501.pdf
(Verlagsversion), 470KB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Subedi, A. (2015). Strong-coupling electron-phonon superconductivity in noncentrosymmetric quasi-one-dimensional K2Cr3As3. Physical Review B, 92(17): 174501. doi:10.1103/PhysRevB.92.174501.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0029-2D14-7
Zusammenfassung
I study the lattice dynamics and electron-phonon coupling in noncentrosymmetric quasi-one-dimensional K2Cr3As3 using density functional theory based first principles calculations. The phonon dispersions show stable phonons without any soft-mode behavior. They also exhibit features that point to a strong interaction of K atoms with the lattice. I find that the calculated Eliashberg spectral function shows a large enhancement around 50 cm−1. The phonon modes that show large coupling involve in-plane motions of all three species of atoms. The q dependent electron-phonon coupling decreases strongly away from the qz=0 plane. The total electron-phonon coupling is large, with a value of λep=3.0, which readily explains the experimentally observed large mass enhancement.