Dilute magnetism and spin-orbital percolation effects in Sr2Ir1-xRhxO4

被引：77

作者：

Clancy, J. P. ^{[1
]}

Lupascu, A. ^{[1
]}

Gretarsson, H. ^{[1
]}

Islam, Z. ^{[2
]}

Hu, Y. F. ^{[3
]}

Casa, D. ^{[2
]}

Nelson, C. S. ^{[4
]}

LaMarra, S. C. ^{[4
]}

Cao, G. ^{[5
]}

Kim, Young-June ^{[1
]}

机构：

[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[3] Canadian Light Source, Saskatoon, SK S7N 0X4, Canada

[4] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

[5] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 05期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

SR2IRO4; TRANSITION; METAL; SR2RHO4;

D O I：

10.1103/PhysRevB.89.054409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used a combination of resonant magnetic x-ray scattering and x-ray absorption spectroscopy to investigate the properties of the doped spin-orbital Mott insulator Sr2Ir1-xRhxO4 (0.07 <= x <= 0.70). We show that Sr2Ir1-xRhxO4 represents a unique model system for the study of dilute magnetism in the presence of strong spin-orbit coupling, and provide evidence of a doping-induced change in magnetic structure and a suppression of magnetic order at x(c) similar to 0.17. We demonstrate that Rh-doping introduces Rh3+/Ir5+ ions which effectively hole-dope this material. We propose that the magnetic phase diagram for this material can be understood in terms of a novel spin-orbital percolation picture.

引用

页数：8

共 41 条

[1] Robustness of Basal-Plane Antiferromagnetic Order and the Jeff=1/2 State in Single-Layer Iridate Spin-Orbit Mott Insulators [J].

Boseggia, S. ;

Springell, R. ;

Walker, H. C. ;

Ronnow, H. M. ;

Rueegg, Ch. ;

Okabe, H. ;

Isobe, M. ;

Perry, R. S. ;

Collins, S. P. ;

McMorrow, D. F. .

PHYSICAL REVIEW LETTERS, 2013, 110 (11)

[2] Antiferromagnetic order and domains in Sr3Ir2O7 probed by x-ray resonant scattering [J].

Boseggia, S. ;

Springell, R. ;

Walker, H. C. ;

Boothroyd, A. T. ;

Prabhakaran, D. ;

Wermeille, D. ;

Bouchenoire, L. ;

Collins, S. P. ;

McMorrow, D. F. .

PHYSICAL REVIEW B, 2012, 85 (18)

[3] Self-consistent aspects of x-ray absorption calculations [J].

Bunau, O. ;

Joly, Y. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (34)

[4] Magnetic structural change of Sr2IrO4 upon Mn doping [J].

Calder, S. ;

Cao, G. -X. ;

Lumsden, M. D. ;

Kim, J. W. ;

Gai, Z. ;

Sales, B. C. ;

Mandrus, D. ;

Christianson, A. D. .

PHYSICAL REVIEW B, 2012, 86 (22)

[5] Weak ferromagnetism, metal-to-nonmetal transition, and negative differential resistivity in single-crystal Sr2IrO4 [J].

Cao, G ;

Bolivar, J ;

McCall, S ;

Crow, JE ;

Guertin, RP .

PHYSICAL REVIEW B, 1998, 57 (18) :R11039-R11042

[6]

Cao Y., 2013, B AM PHYS SOC, V58

[7] MECHANISM FOR THE METAL-INSULATOR-TRANSITION IN SR2IR1-XRUXO4 [J].

CARTER, SA ;

BATLOGG, B ;

CAVA, RJ ;

KRAJEWSKI, JJ ;

PECK, WF ;

RUPP, LW .

PHYSICAL REVIEW B, 1995, 51 (23) :17184-17187

[8] LOCALIZED-TO-ITINERANT ELECTRON TRANSITION IN SR2IR1-XRUXO4 [J].

CAVA, RJ ;

BATLOGG, B ;

KIYONO, K ;

TAKAGI, H ;

KRAJEWSKI, JJ ;

PECK, WF ;

RUPP, LW ;

CHEN, CH .

PHYSICAL REVIEW B, 1994, 49 (17) :11890-11896

[9] The magnetic motif and the wavefunction of Kramers ions in strontium iridate (Sr2IrO4) [J].

Chapon, L. C. ;

Lovesey, S. W. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2011, 23 (25)

[10] STRUCTURAL AND MAGNETIC STUDIES OF SR2IRO4 [J].

CRAWFORD, MK ;

SUBRAMANIAN, MA ;

HARLOW, RL ;

FERNANDEZBACA, JA ;

WANG, ZR ;

JOHNSTON, DC .

PHYSICAL REVIEW B, 1994, 49 (13) :9198-9201

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