Allan, MP;
Tamai, A;
Rozbicki, E;
Fischer, MH;
Voss, J;
King, PDC;
Meevasana, W;
... Baumberger, F; + view all
(2013)
Formation of heavy d-electron quasiparticles in Sr₃Ru₂O₇.
New Journal of Physics
, 15
, Article 063029. 10.1088/1367-2630/15/6/063029.
Preview |
Text
Perry_Allan_2013_New_J._Phys._15_063029.pdf - Published Version Download (1MB) | Preview |
Abstract
The phase diagram of Sr3Ru2O7 shows hallmarks of strong electron correlations despite the modest Coulomb interaction in the Ru 4d shell. We use angle-resolved photoelectron spectroscopy measurements to provide microscopic insight into the formation of the strongly renormalized heavy d-electron liquid that controls the physics of Sr3Ru2O7. Our data reveal itinerant Ru 4d-states confined over large parts of the Brillouin zone to an energy range of <6 meV, nearly three orders of magnitude lower than the bare band width. We show that this energy scale agrees quantitatively with a characteristic thermodynamic energy scale associated with quantum criticality and illustrate how it arises from a combination of back-folding due to a structural distortion and the hybridization of light and strongly renormalized, heavy quasiparticle bands. The resulting heavy Fermi liquid has a marked k-dependence of the renormalization which we relate to orbital mixing along individual Fermi surface sheets.
| Type: | Article |
|---|---|
| Title: | Formation of heavy d-electron quasiparticles in Sr₃Ru₂O₇ |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1367-2630/15/6/063029 |
| Publisher version: | http://dx.doi.org/10.1088/1367-2630/15/6/063029 |
| Language: | English |
| Additional information: | Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (http://creativecommons.org/licenses/by/3.0). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10139436 |
Archive Staff Only
 |
View Item |
