Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Role of correlations in determining the Van Hove strain in Sr2RuO4

Barber, M. E., Lechermann, F., Streltsov, S. V., Skornyakov, S. L., Ghosh, S., Ramshaw, B. J., et al. (2019). Role of correlations in determining the Van Hove strain in Sr2RuO4. Physical Review B, 100(24): 245139, pp. 1-7. doi:10.1103/PhysRevB.100.245139.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Barber, Mark E.1, Autor           
Lechermann, Frank2, Autor
Streltsov , Sergey V.2, Autor
Skornyakov, Sergey L.2, Autor
Ghosh, Sayak2, Autor
Ramshaw, B. J.2, Autor
Kikugawa, Naoki2, Autor
Sokolov, Dmitry A.1, Autor           
Mackenzie, Andrew P.3, Autor           
Hicks, Clifford W.4, Autor           
Mazin, I. I.2, Autor
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2External Organizations, ou_persistent22              
3Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              
4Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863466              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Uniaxial pressure applied along a Ru-O-Ru bond direction induces an elliptical distortion of the largest Fermi surface of Sr2RuO4, eventually causing a Fermi surface topological transition, also known as a Lifshitz transition, into an open Fermi surface. There are various anomalies in low-temperature properties associated with this transition, including maxima in the superconducting critical temperature and in resistivity. In the present paper, we report refined measurements of the strain at which this transition occurs, employing apparatus in which the stress on the sample is measured, and resonant ultrasound measurement of the low-temperature elastic moduli. The Lifshitz transition is found to occur at a longitudinal strain epsilon(xx) of (-0.44 +/- 0.06) x 10(-2), which corresponds to a B-1g strain epsilon(xx) - epsilon(yy) of (-0.66 +/- 0.09) x 10(-2). This is considerably smaller than the strain corresponding to a Lifshitz transition in density functional theory calculations, even if the spin-orbit coupling is taken into account. Using dynamical mean-field theory, we show that electronic correlations reduce the critical strain. It turns out that the orbital anisotropy of the local Coulomb interaction on the Ru site is, furthermore, important to bring this critical strain close to the experimental number and thus well into the experimentally accessible range of strains.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2019-12-232019-12-23
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000504446000003
DOI: 10.1103/PhysRevB.100.245139
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Physical Review B
  Kurztitel : Phys. Rev. B
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Woodbury, NY : American Physical Society
Seiten: - Band / Heft: 100 (24) Artikelnummer: 245139 Start- / Endseite: 1 - 7 Identifikator: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008