Controllable Emergent Spatial Spin Modulation in 
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<i>In Situ</i>
 Shear Strain

Pandey, S.; Zhang, H.; Yang, Junyi; May, Andrew F.; Sanchez, Joshua J.; Z., Liu,; Chu, Jiun‐Haw; Kim, Jong Woo; Ryan, Philip; Zhou, Huanfu; Liu, J.

doi:10.1103/physrevlett.129.027203

Cited by 6 publications

(3 citation statements)

References 58 publications

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“…Therefore, it is natural to consider introducing anisotropies of a different symmetry group. In a following work by Pandey et al [25], a B 2g -type shear strain was applied to the Sr 2 IrO 4 system where a thin piece of crystal was stretched in the [110] lattice direction. Elastoelectric study was combined with in situ RXMS, and the combined technique established the emergence of a new magnetic phase with broken translation symmetry (figure 4(f)).…”

Section: Magnetism Probed By Resonant Magnetic Scattering In the Irid...mentioning

confidence: 99%

“…Therefore, a direct probe for precise lattice distortion is urgently needed. Furthermore, in some specified quantum systems where the elasto-quantum effects are manifested as the detwinning of structural/magnetic domains [7,11] or emergent charge/spin ordering [25,26], a direct examination of the lattice, charge, and spin degree of freedom will greatly aid the understanding of the underlying mechanism. These are areas where x-ray techniques, such as x-ray diffraction (XRD), are known to shine, especially when performing the measurements at synchrotron facilities.…”

Section: Introductionmentioning

confidence: 99%

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Perspective: probing elasto-quantum materials with x-ray techniques and in situ anisotropic strain

Zhang,

Sanchez,

Chu

et al. 2024

J. Phys.: Condens. Matter

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Anisotropic lattice deformation plays an important role in the quantum mechanics of solid state physics. The possibility of mediating the competition and cooperation among different order parameters by applying in situ strain/stress on quantum materials has led to discoveries of a variety of elasto-quantum effects on emergent phenomena. It has become increasingly critical to have the capability of combining the in situ strain tuning with X-ray techniques, especially those based on synchrotrons, to probe the microscopic elasto-responses of the lattice, spin, charge, and orbital degrees of freedom. Herein, we briefly review the recent studies that embarked on utilizing elasto-X-ray characterizations on representative material systems and demonstrated the emerging opportunities enabled by this method. With that, we further discuss the promising prospect in this rising area of quantum materials research and the bright future of elasto-X-ray techniques.

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Section: Magnetism Probed By Resonant Magnetic Scattering In the Irid...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Perspective: probing elasto-quantum materials with x-ray techniques and in situ anisotropic strain

Zhang,

Sanchez,

Chu

et al. 2024

J. Phys.: Condens. Matter

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“…The Mott insulator–metal transition has garnered significant attention in condensed matter physics due to its potential device applications and the possibility of superconductivity when doped. In recent years, 5d transition metal oxides (TMOs) have become a focal point for researchers. − These materials have exhibited a variety of intriguing physical states, including spin–orbit coupling (SOC)-driven Mott insulators, , quantum spin liquids, , correlated topological insulators, and Weyl semimetals. , In contrast to the typically overlooked SOC effect (∼0.02 eV) in 3d TMOs, iridates exhibit a substantial SOC effect of approximately 0.4 eV, which is nearly on par with crystal field splitting and electron–electron correlations. ,, Consequently, Ir 5d-t 2g bands are divided into J eff = 3/2 and J eff = 1/2 subbands …”

Section: Introductionmentioning

confidence: 99%

Tunable 5d-t_2g Mott State and Monoatomic Layer Two-Dimensional Electron Gas Realized in Spin–Orbit-Coupled SrIrO₃ through Heterostructuring

Li,

Ding,

et al. 2024

ACS Appl. Electron. Mater.

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We employ density functional theory in combination with a correlation U correction to elucidate a complete charge transfer phenomenon between the interfacial Ti-t 2g orbitals and Ir-t 2g orbitals within spin−orbit-coupled (SrIrO 3 ) m /(LaTiO 3 ) 1 superlattices. This charge transfer is driven by the interfacial polarity difference and oxygen octahedral distortion. Our investigation shows that hole doping of the LaTiO 3 layer or increasing the number m of SrIrO 3 layers offers an effective means to modulate the charge transfer and the electron occupation within the J eff = 1/2 5d-bands of Ir atoms. This modulation leads to the emergence of various electronic states, including nonmagnetic band insulating (SrIrO 3 ) 1 /(LaTiO 3 ) 1 , ferromagnetic metallic (SrIrO 3 ) 1 / (La 1−x Ba x TiO 3 ) 1 , ferrimagnetic Mott insulating (SrIrO 3 ) 2 /(LaTiO 3 ) 1 , and ferrimagnetic metallic (SrIrO 3 ) m /(LaTiO 3 ) 1 with m ≥ 3. Notably, we find that charge transfer and the two-dimensional electron gas phenomenon occur exclusively at the interfacial IrO 2 monatomic layers of (SrIrO 3 ) m /(LaTiO 3 ) 1 , regardless of the thickness of the SrIrO 3 layer. This behavior sharply contrasts with the characteristics of the LaAlO 3 /SrTiO 3 system, where the 2DEG extends across multiple unit cells. Our research provides fresh insights into the unconventional 5d electronic structures of spin−orbit-coupled iridates, particularly those with less-explored fractionally occupied mixed valence state (Ir 3.3+ /Ir 3.7+ ), suggesting their potential for application in nanoscale oxide electronic devices.

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Pursuing insulator-to-metal transition in Sr2Ir1-xMxO4 (M=Li, Zn, Sc) solid solutions

Huang

Wang

et al. 2023

Physica B: Condensed Matter

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Controllable Emergent Spatial Spin Modulation in Sr2IrO4 by In Situ Shear Strain

Cited by 6 publications

References 58 publications

Perspective: probing elasto-quantum materials with x-ray techniques and in situ anisotropic strain

Perspective: probing elasto-quantum materials with x-ray techniques and in situ anisotropic strain

Tunable 5d-t_2g Mott State and Monoatomic Layer Two-Dimensional Electron Gas Realized in Spin–Orbit-Coupled SrIrO₃ through Heterostructuring

Pursuing insulator-to-metal transition in Sr2Ir1-xMxO4 (M=Li, Zn, Sc) solid solutions

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Controllable Emergent Spatial Spin Modulation in Sr2IrO4 by In Situ Shear Strain

Cited by 6 publications

References 58 publications

Perspective: probing elasto-quantum materials with x-ray techniques and in situ anisotropic strain

Perspective: probing elasto-quantum materials with x-ray techniques and in situ anisotropic strain

Tunable 5d-t2g Mott State and Monoatomic Layer Two-Dimensional Electron Gas Realized in Spin–Orbit-Coupled SrIrO3 through Heterostructuring

Pursuing insulator-to-metal transition in Sr2Ir1-xMxO4 (M=Li, Zn, Sc) solid solutions

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Product

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Tunable 5d-t_2g Mott State and Monoatomic Layer Two-Dimensional Electron Gas Realized in Spin–Orbit-Coupled SrIrO₃ through Heterostructuring