Uniaxial-strain tuning method in the study of iron-based superconductors DOI Open Access
Chung‐Yi Li,

Zi-Ye Mo,

Xingye Lu

et al.

Acta Physica Sinica, Journal Year: 2024, Volume and Issue: 73(19), P. 197103 - 197103

Published: Jan. 1, 2024

In the study of quantum materials, introducing pressure and strain that can change lattice parameters symmetry is an effective experimental method for manipulating electronic properties system. measurements under hydrostatic or in-plane epitaxial strain, changes in will lead to significant structure, thereby triggering off novel phenomena phase transitions. By comparison, uniaxial which has been widely employed recent years, not only parameters, but also directly destroys controls system, affecting ordering state even collective excitation This article provides a comprehensive overview basic concepts development methods, some research progress using these methods regulate superconductivity nematicity iron-based superconductors. review contains six sections. Section 1 focuses on genetral introduction techque arrangement this paper. 2 devoted formulas related elastic moduli decomposition into irreducible symmetric channels <i>D</i><sub>4<i>h</i></sub> point group. 3 gives superconductors (FeSCs) discusses uniaxial-pressure detwinning progress. 4 introduces establishment elastoresistance as probe nematic susceptibility key researches direction. 5 describes effects nematicity. sections 5, techniques, such elastoresistance, are discussed detail. 6 extends discussion several types materials suitable uniaxial-strain tuning beyond FeSCs. Finally, we provide brief summary outlook technique. Overall, valuable resources beginners field FeSC those who interested modulate materials. summarizing advancements hopes inspire further innovation studying strain.

Language: Английский

Synthesis of superconducting freestanding infinite-layer nickelate heterostructures on the millimetre scale DOI
Y. Lee, Xin Wei, Yijun Yu

et al.

Nature Synthesis, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Language: Английский

Citations

4
Magnetic excitations in strained infinite-layer nickelate PrNiO2 films DOI Creative Commons
Qiang Gao, Shiyu Fan, Qisi Wang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 3, 2024

Strongly correlated materials respond sensitively to external perturbations such as strain, pressure, and doping. In the recently discovered superconducting infinite-layer nickelates, transition temperature can be enhanced via only ~ 1% compressive strain-tuning with root of enhancement still being elusive. Using resonant inelastic x-ray scattering (RIXS), we investigate magnetic excitations in PrNiO

Language: Английский

Citations

11
Experimental progress in freestanding oxide membranes designed by epitaxy DOI Creative Commons
Varun Harbola, Ruijuan Xu, Seung Sae Hong

et al.

Advances in Physics X, Journal Year: 2025, Volume and Issue: 10(1)

Published: Jan. 17, 2025

Language: Английский

Citations

0
Freestanding perovskite and infinite-layer nickelate membranes DOI
Hoshang Sahib,

L. Schlur,

Bernat Mundet

et al.

Physical Review Materials, Journal Year: 2025, Volume and Issue: 9(1)

Published: Jan. 29, 2025

Language: Английский

Citations

0
Synthesis and Crystal Structure of Perovskite Nickelates R0.8A0.2NiO3 and Infinite-layer Nickelates R0.8A0.2NiO2 (R = Pr, Nd, Sm, Eu; A = Sr, Ca) DOI
Tomonori Miyatake,

Jin Akahori,

Ryo Kirihara

et al.

Journal of the Physical Society of Japan, Journal Year: 2025, Volume and Issue: 94(5)

Published: April 22, 2025

Language: Английский

Citations

0
Isotropic Quantum Griffiths Singularity in Nd0.8Sr0.2NiO2 Infinite-Layer Superconducting Thin Films DOI
Qiang Zhao,

Ting‐Na Shao,

Wen-Long Yang

et al.

Physical Review Letters, Journal Year: 2024, Volume and Issue: 133(3)

Published: July 17, 2024

This work reports on the emergence of quantum Griffiths singularity (QGS) associated with magnetic field induced superconductor-metal transition (SMT) in unconventional Nd0.8Sr0.2NiO2 infinite layer superconducting thin films. The system manifests isotropic SMT features under both in-plane and perpendicular fields. Importantly, after scaling analysis isothermal magnetoresistance curves, obtained effective dynamic critical exponents demonstrate divergent behavior when approaching zero-temperature point Bc*, identifying QGS characteristics. Moreover, fluctuation can quantitatively explain upturn upper around zero temperature for fields phase boundary SMT. These properties indicate that film is isotropic. a higher gives rise to metallic state resistance-temperature relation R(T) exhibiting lnT dependence among 2–10 K range T2 resistance below 1.5 K, which significant evidence Kondo scattering. interplay between scattering superconductor illustrate important role rare region help uncover exotic superconductivity mechanism this system.Received 17 December 2023Revised 7 April 2024Accepted 28 May 2024DOI:https://doi.org/10.1103/PhysRevLett.133.036003© 2024 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasKondo effectQuantum transitionsSuperconductivityPhysical SystemsNickelatesThin filmsUnconventional superconductorsTechniquesResistivity measurementsCondensed Matter, Materials & Applied Physics

Language: Английский

Citations

3
Freestanding Perovskite and Brownmillerite SrCoOx Membranes for Direct Imaging of Topotactic Phase Transitions DOI
Hudson Alex Shih, Jieyang Zhou, Izoah Leone Snowden

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Topotactic phase transitions between perovskite SrCoO3 and brownmillerite SrCoO2.5 have garnered attention for application in energy-efficient neuromorphic computing systems. However, the evolution of local microstructures, crucial designing topotactic devices improving switching performance, remains underexplored due to limitations epitaxial thin films bound bulk substrates. Here, we report synthesis characterization oxide SrCoOx as a freestanding membrane, successfully stabilizing both phases. Plan-view transmission electron microscopy identifies extraordinary formation filamentary one-dimensional (1D) domains phases during transition, correlated with 1D oxygen vacancy channels that facilitate rapid ion diffusion. These serve direct evidence anisotropic nature dictated by findings also underscore advantages membrane geometries developing fundamental understanding complex oxides.

Language: Английский

Citations

0
Unraveling P‐Type and N‐Type Interfaces in Superconducting Infinite‐Layer Nickelate Thin Films DOI Creative Commons
Aravind Raji, Araceli Gutiérrez‐Llorente, Dongxin Zhang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Abstract After decades of research, superconductivity is finally found in nickel‐based analogs superconducting cuprates, with infinite‐layer (IL) structure. These results are so far restricted to thin films the case IL‐nickelates. Therefore, nature interface substrate, and how it couples film properties still an open question. Here, using scanning transmission electron microscopy (STEM)‐ energy loss spectroscopy (EELS), a novel p‐type defined by SrO termination SrTiO 3 substrate observed (SC) IL‐praseodymium nickelate samples. Its interfacial charge polarity compared previously reported n‐type characterized TiO 2 termination. In combination ab‐initio calculations, that influence on electronic structure local does not extend beyond 2–3 unit cells into film. This decouples direct driving superconductivity, indicates IL‐nickelate do have universal model. Insights spatial hole‐distribution SC samples, provided monochromated EELS total reflection‐hard X‐ray photoemission spectroscopy, suggest this particular distribution might be directly influencing superconductivity.

Language: Английский

Citations

1
Superconductivity in an infinite-layer nickelate superlattice DOI Creative Commons
Wen Xiao, Zhan Yang, Shilin Hu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 25, 2024

Language: Английский

Citations

1
Uniaxial-strain tuning method in the study of iron-based superconductors DOI Open Access
Chung‐Yi Li,

Zi-Ye Mo,

Xingye Lu

et al.

Acta Physica Sinica, Journal Year: 2024, Volume and Issue: 73(19), P. 197103 - 197103

Published: Jan. 1, 2024

In the study of quantum materials, introducing pressure and strain that can change lattice parameters symmetry is an effective experimental method for manipulating electronic properties system. measurements under hydrostatic or in-plane epitaxial strain, changes in will lead to significant structure, thereby triggering off novel phenomena phase transitions. By comparison, uniaxial which has been widely employed recent years, not only parameters, but also directly destroys controls system, affecting ordering state even collective excitation This article provides a comprehensive overview basic concepts development methods, some research progress using these methods regulate superconductivity nematicity iron-based superconductors. review contains six sections. Section 1 focuses on genetral introduction techque arrangement this paper. 2 devoted formulas related elastic moduli decomposition into irreducible symmetric channels <i>D</i><sub>4<i>h</i></sub> point group. 3 gives superconductors (FeSCs) discusses uniaxial-pressure detwinning progress. 4 introduces establishment elastoresistance as probe nematic susceptibility key researches direction. 5 describes effects nematicity. sections 5, techniques, such elastoresistance, are discussed detail. 6 extends discussion several types materials suitable uniaxial-strain tuning beyond FeSCs. Finally, we provide brief summary outlook technique. Overall, valuable resources beginners field FeSC those who interested modulate materials. summarizing advancements hopes inspire further innovation studying strain.

Language: Английский

Citations

0