de la Torre, A;
Hunter, EC;
Subedi, A;
McKeown Walker, S;
Tamai, A;
Kim, TK;
Hoesch, M;
... Baumberger, F; + view all
(2014)
Coherent quasiparticles with a small fermi surface in lightly doped Sr3Ir2O7.
Physical Review Letters
, 113
(25)
, Article 256402. 10.1103/PhysRevLett.113.256402.
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Abstract
We characterize the electron doping evolution of (Sr1−xLax)3Ir2O7 by means of angle-resolved photoemission. Concomitant with the metal insulator transition around x≈0.05 we find the emergence of coherent quasiparticle states forming a closed small Fermi surface of volume 3x/2, where x is the independently measured La concentration. The quasiparticle weight Z remains large along the entire Fermi surface, consistent with the moderate renormalization of the low-energy dispersion, and no pseudogap is observed. This indicates a conventional, weakly correlated Fermi liquid state with a momentum independent residue Z≈0.5 in lightly doped Sr3Ir2O7.
| Type: | Article |
|---|---|
| Title: | Coherent quasiparticles with a small fermi surface in lightly doped Sr3Ir2O7 |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.113.256402 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.113.256402 |
| Language: | English |
| Additional information: | Copyright © 2014 American Physical Society. |
| 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.ucl.ac.uk/id/eprint/1465522 |
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