Quantum critical nature of the short-range magnetic order in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Sr</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>La</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>IrO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>

Rodan, Steven T.; Yoon, Sujung; Lee, Suheon; Choi, Kwang‐Yong; Kim, Gareoung; Rhyee, Jong‐Soo; Koda, A.; Chen, Wei-Tin; Chou, F. C.

doi:10.1103/physrevb.98.214412

Cited by 8 publications

(1 citation statement)

References 34 publications

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“…The next target is to realize superconductivity in a bulk material. Carrier doping has been performed by La substitution at Sr sites for electron doping by several groups. − We employed the mechanical alloying method and finally succeeded in La substitution up to x = 0.14 in Sr 2– x La x IrO 4 , but superconductivity does not appear …”

Section: Introductionmentioning

confidence: 99%

Origin of Unexpected Ir³⁺ in a Superconducting Candidate Sr₂IrO₄ System Analyzed by Photoelectron Holography

et al. 2023

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The reason for the absence of superconductivity in Sr2IrO4 was estimated by photoelectron spectra and photoelectron holograms. The analysis of the La photoelectron hologram concluded that La atoms are substituted to Sr sites. Two O 1s peaks were observed and were identified as the oxygens in the IrO2 and SrO planes by photoelectron holography and density functional theory (DFT) calculations. In the Ir 4f spectrum of Sr2IrO4, an unexpected Ir3+ peak was observed as much as 50% of all of the Ir. The photoelectron hologram of Ir3+ showed a displacement of about 0.15 Å. This displacement is thought to be due to the oxygen vacancies in the IrO2 plane. These oxygen vacancies and the associated local displacement of the atoms might inhibit superconductivity in spite of sufficient electron doping.

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Section: Introductionmentioning

confidence: 99%

Origin of Unexpected Ir³⁺ in a Superconducting Candidate Sr₂IrO₄ System Analyzed by Photoelectron Holography

et al. 2023

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The J_eff = 1/2 Antiferromagnet Sr₂IrO₄: A Golden Avenue toward New Physics and Functions

Liu

2019

Advanced Materials

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Iridates have been providing a fertile ground for studying emergent phases of matter that arise from the delicate interplay of various fundamental interactions with approximate energy scale. Among these highly focused quantum materials, the perovskite Sr2IrO4, which belongs to the Ruddlesden–Popper series, stands out and has been intensively addressed in the last decade, since it hosts a novel Jeff = 1/2 state that is a profound manifestation of strong spin–orbit coupling. Moreover, the Jeff = 1/2 state represents a rare example of iridates that is better understood both theoretically and experimentally. Here, Sr2IrO4 is taken as an example to review the recent advances of the Jeff = 1/2 state in two aspects: materials fundamentals and functionality potentials. In the fundamentals part, the basic issues for the layered canted antiferromagnetic order of the Jeff = 1/2 magnetic moments in Sr2IrO4 are illustrated, and then the progress of the antiferromagnetic order modulation through diverse routes is highlighted. Subsequently, for the functionality potentials, fascinating properties such as atomic‐scale giant magnetoresistance, anisotropic magnetoresistance, and nonvolatile memory, are addressed. To conclude, prospective remarks and an outlook are given.

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Robust Insulating State in Nb-Doped Sr$$_2$$IrO$$_4$$

Huang

Han

et al. 2022

J Supercond Nov Magn

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Quantum critical nature of the short-range magnetic order in Sr2−xLaxIrO4

Cited by 8 publications

References 34 publications

Origin of Unexpected Ir³⁺ in a Superconducting Candidate Sr₂IrO₄ System Analyzed by Photoelectron Holography

Origin of Unexpected Ir³⁺ in a Superconducting Candidate Sr₂IrO₄ System Analyzed by Photoelectron Holography

The J_eff = 1/2 Antiferromagnet Sr₂IrO₄: A Golden Avenue toward New Physics and Functions

Robust Insulating State in Nb-Doped Sr$$_2$$IrO$$_4$$

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Quantum critical nature of the short-range magnetic order in Sr2−xLaxIrO4

Cited by 8 publications

References 34 publications

Origin of Unexpected Ir3+ in a Superconducting Candidate Sr2IrO4 System Analyzed by Photoelectron Holography

Origin of Unexpected Ir3+ in a Superconducting Candidate Sr2IrO4 System Analyzed by Photoelectron Holography

The Jeff = 1/2 Antiferromagnet Sr2IrO4: A Golden Avenue toward New Physics and Functions

Robust Insulating State in Nb-Doped Sr$$_2$$IrO$$_4$$

Contact Info

Product

Resources

About

Origin of Unexpected Ir³⁺ in a Superconducting Candidate Sr₂IrO₄ System Analyzed by Photoelectron Holography

Origin of Unexpected Ir³⁺ in a Superconducting Candidate Sr₂IrO₄ System Analyzed by Photoelectron Holography

The J_eff = 1/2 Antiferromagnet Sr₂IrO₄: A Golden Avenue toward New Physics and Functions