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Literature DB >> 26551128

Collapse of the Mott Gap and Emergence of a Nodal Liquid in Lightly Doped Sr(2)IrO(4).

A de la Torre¹, S McKeown Walker¹, F Y Bruno¹, S Riccó¹, Z Wang^1,2, I Gutierrez Lezama¹, G Scheerer¹, G Giriat¹, D Jaccard¹, C Berthod¹, T K Kim³, M Hoesch³, E C Hunter⁴, R S Perry⁵, A Tamai¹, F Baumberger^1,2,6.

Abstract

We report angle resolved photoemission experiments on the electron doped Heisenberg antiferromagnet (Sr(1-x)La(x))(2)IrO(4). 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 Sr(2)IrO(4).

Year: 2015 PMID： 26551128 DOI： 10.1103/PhysRevLett.115.176402

Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161

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Cited

12 in total

1. Ultrafast energy- and momentum-resolved dynamics of magnetic correlations in the photo-doped Mott insulator Sr2IrO4.

Authors: M P M Dean; Y Cao; X Liu; S Wall; D Zhu; R Mankowsky; V Thampy; X M Chen; J G Vale; D Casa; Jungho Kim; A H Said; P Juhas; R Alonso-Mori; J M Glownia; A Robert; J Robinson; M Sikorski; S Song; M Kozina; H Lemke; L Patthey; S Owada; T Katayama; M Yabashi; Yoshikazu Tanaka; T Togashi; J Liu; C Rayan Serrao; B J Kim; L Huber; C-L Chang; D F McMorrow; M Först; J P Hill
Journal: Nat Mater Date: 2016-05-09 Impact factor: 43.841

2. A charge density wave-like instability in a doped spin-orbit-assisted weak Mott insulator.

Authors: H Chu; L Zhao; A de la Torre; T Hogan; S D Wilson; D Hsieh
Journal: Nat Mater Date: 2017-01-16 Impact factor: 43.841

3. Hallmarks of the Mott-metal crossover in the hole-doped pseudospin-1/2 Mott insulator Sr2IrO4.

Authors: Yue Cao; Qiang Wang; Justin A Waugh; Theodore J Reber; Haoxiang Li; Xiaoqing Zhou; Stephen Parham; S-R Park; Nicholas C Plumb; Eli Rotenberg; Aaron Bostwick; Jonathan D Denlinger; Tongfei Qi; Michael A Hermele; Gang Cao; Daniel S Dessau
Journal: Nat Commun Date: 2016-04-22 Impact factor: 14.919

Collapse of the Mott Gap and Emergence of a Nodal Liquid in Lightly Doped Sr(2)IrO(4).

1. Ultrafast energy- and momentum-resolved dynamics of magnetic correlations in the photo-doped Mott insulator Sr2IrO4.

2. A charge density wave-like instability in a doped spin-orbit-assisted weak Mott insulator.

3. Hallmarks of the Mott-metal crossover in the hole-doped pseudospin-1/2 Mott insulator Sr2IrO4.

4. Infrared Spectroscopic Evidences of Strong Electronic Correlations in (Sr1-xLax)3Ir2O7.

5. Unidirectional spin density wave state in metallic (Sr_1-xLa _x )₂IrO₄.

6. Correlation induced electron-hole asymmetry in quasi- two-dimensional iridates.

7. Infrared probe of pseudogap in electron-doped Sr₂IrO₄.

8. Mott gap collapse in lightly hole-doped Sr_2-xK_xIrO₄.

9. Nuclear resonant scattering from ¹⁹³Ir as a probe of the electronic and magnetic properties of iridates.

10. In situ strain tuning of the metal-insulator-transition of Ca₂RuO₄ in angle-resolved photoemission experiments.