Evolution of the remnant Fermi-surface state in the lightly doped correlated spin-orbit insulator Sr2-xLaxIrO4

被引：18

作者：

Terashima, K. ^{[1
]}

Sunagawa, M. ^{[2
]}

Fujiwara, H. ^{[2
]}

Fukura, T. ^{[2
]}

Fujii, M. ^{[2
]}

Okada, K. ^{[3
]}

Horigane, K. ^{[1
]}

Kobayashi, K. ^{[1
,2
]}

Horie, R. ^{[1
]}

Akimitsu, J. ^{[1
]}

Golias, E. ^{[4
]}

Marchenko, D. ^{[4
]}

Varykhalov, A. ^{[4
]}

Saini, N. L. ^{[5
]}

Wakita, T. ^{[1
]}

Muraoka, Y. ^{[1
,2
]}

Yokoya, T. ^{[1
,2
]}

机构：

[1] Okayama Univ, Res Inst Interdisciplinary Sci, Okayama 7008530, Japan

[2] Okayama Univ, Grad Sch Nat Sci, Okayama 7008530, Japan

[3] Aoyama Gakuin Univ, Sagamihara, Kanagawa 2298558, Japan

[4] Helmholtz Zentrum Berlin Mat & Energie, Albert Einstein Str 15, D-12489 Berlin, Germany

[5] Univ Roma La Sapienza, Dipartimento Fis, Ple Aldo Moro 2, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 04期

关键词：

SR2IRO4; SUPERCONDUCTOR; TRANSITION; ARCS;

D O I：

10.1103/PhysRevB.96.041106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electronic structure of the lightly electron-doped correlated spin-orbit insulator Sr2IrO4 has been studied by angle-resolved photoelectron spectroscopy. We have observed the coexistence of a lower Hubbard band and an in-gap band; the momentum dependence of the latter traces that of the band calculations without on-site Coulomb repulsion. The in-gap state remained anisotropically gapped in all observed momentum areas, forming a remnant Fermi-surface state, evolving towards the Fermi energy by carrier doping. These experimental results show a striking similarity with those observed in deeply underdoped cuprates, suggesting the common nature of the nodal liquid states observed in both compounds.

引用

页数：5

共 32 条

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