De la Torre, A;
McKeown Walker, S;
Bruno, FY;
Riccó, S;
Wang, Z;
Gutierrez Lezama, I;
Scheerer, G;
... Baumberger, F; + view all
(2015)
Collapse of the Mott Gap and Emergence of a Nodal Liquid in Lightly Doped Sr2IrO4.
Physical Review Letters
, 115
(17)
, Article 176402. 10.1103/PhysRevLett.115.176402.
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Abstract
We report angle resolved photoemission experiments on the electron doped Heisenberg antiferromagnet (Sr1−xLax)2IrO4. For a doping level of x=0.05, we find an unusual metallic state with coherent nodal excitations and an antinodal pseudogap bearing strong similarities with underdoped cuprates. This state emerges from a rapid collapse of the Mott gap with doping resulting in a large underlying Fermi surface that is backfolded by a (π,π) reciprocal lattice vector which we attribute to the intrinsic structural distortion of Sr2IrO4.
| Type: | Article |
|---|---|
| Title: | Collapse of the Mott Gap and Emergence of a Nodal Liquid in Lightly Doped Sr2IrO4 |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.115.176402 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.115.176402 |
| Language: | English |
| Additional information: | Copyright © 2015 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/1483848 |
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