Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mrow><mml:mi>La</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:mrow><mml:msub><mml:mrow><mml:mi>Sr</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>MnO</mml:mi></mml:mro

Yi, Di; Flint, Charles Louis; Balakrishnan, Purnima P.; Mahalingam, Krishnamurthy; Urwin, Brittany; Vailionis, Artūras; N’Diaye, Alpha T.; Shafer, Padraic; Arenholz, Elke; Choi, Y.; Stone, Kevin H.; Chu, J.-H.; Howe, Brandon M.; Liu, Jian; Fisher, I. R.; Suzuki, Yuri

doi:10.1103/physrevlett.119.077201

Cited by 115 publications

(101 citation statements)

References 49 publications

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“…2). Our previous studies have shown the excellent unit-cell layering of the superlattices by using transmission electron microscopy 22,27 . All samples were electrolytically gated with the ionic liquid DEME + -TFSIon the film surface, and voltages were applied across the electrolyte using electrical contacts to the top electrode and film surface ( Figure 1a).…”

Section: Synthesis Of Digital Superlattices and Reference Filmsmentioning

confidence: 99%

Emergent electric field control of phase transformation in oxide superlattices

Wang

Erve

et al. 2020

Nat Commun

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Electric fields can transform materials with respect to their structure and properties, enabling various applications ranging from batteries to spintronics. Recently electrolytic gating, which can generate large electric fields and voltage-driven ion transfer, has been identified as a powerful means to achieve electric-field-controlled phase transformations. The class of transition metal oxides (TMOs) provide many potential candidates that present a strong response under electrolytic gating. However, very few show a reversible structural transformation at roomtemperature. Here, we report the realization of a digitally synthesized TMO that shows a reversible, electric-field-controlled transformation between distinct crystalline phases at room-temperature. In superlattices comprised of alternating one-unit-cell of SrIrO 3 and La 0.2 Sr 0.8 MnO 3 , we find a reversible phase transformation with a 7% lattice change and dramatic modulation in chemical, electronic, magnetic and optical properties, mediated by the reversible transfer of oxygen and hydrogen ions. Strikingly, this phase transformation is absent in the constituent oxides, solid solutions and larger period superlattices. Our findings open up a new class of materials for voltagecontrolled functionality.

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Section: Synthesis Of Digital Superlattices and Reference Filmsmentioning

confidence: 99%

Emergent electric field control of phase transformation in oxide superlattices

Wang

Erve

et al. 2020

Nat Commun

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“…The PMA also leads to an anomalous Hall effect [132]. To shed light on the underlying mechanism, Yi et al recently performed a systematic study of the interfacial anisotropy by preparing a series of La 1−x Sr x MnO 3 /SrIrO 3 superlattices with doping ratio x ranging from 0 to 1 [58]. The PMA was shown to emerge at x = 0.5 and then increases rapidly with x.…”

Section: Exploiting Interfacial Coupling Between 5d and 3d States Formentioning

confidence: 99%

Novel spin-orbit coupling driven emergent states in iridate-based heterostructures

Lin

Meyers

Dean

et al. 2019

Journal of Physics and Chemistry of Solids

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Recent years have seen many examples of how the strong spin-orbit coupling (SOC) present in iridates can stabilize new emergent states that are difficult or impossible to realize in more conventional materials. In this review we outline a representative set of studies detailing how heterostructures based on Ruddlesden-Popper (RP) and perovskite iridates can be used to access yet more novel physics. Beginning with a short synopsis of iridate thin film growth, the effects of the heterostructure morphology on the RP iridates including Sr 2 IrO 4 and SrIrO 3 are discussed. Example studies explore the effects of epitaxial strain, laser-excitation to access transient states, topological semimetallicity in SrIrO 3 , 2D magnetism in artificial RP iridates, and interfacial magnetic coupling between iridate and neighboring layers. Taken together, these works show the fantastic potential for controlled engineering of novel quantum phenomena in iridate heterostructures.

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“…For instance, emergent ferromagnetism and topological Hall effect have been reported in the SrMn 4+ O3/SrIr 4+ O3 [10][11][12] (SMO/SIO) and La0.7Sr0.3MnO3 (LSMO)/SIO 13,14 heterostructure, respectively. Moreover, through atomically control of the coupling between the iridate and manganite, a tunable in-plane ferromagnetic anisotropy characterized by both magnetization and anisotropic magnetoresistance (AMR) was reported at the La1-xSrxMnO3/SIO 15,16 heterostructures. Up to now, while interesting results have been achieved at the Mn 4+ /Ir 4+ or Mn 3+/4+ /Ir 4+ interfaces, little study explores the perovskite interfaces of pure Mn 3+ and Ir 4+ , which has a unique polar/nonpolar structure.…”

Section: Introductionmentioning

confidence: 99%

Tailoring magnetic order via atomically stacking 3d/5d electrons to achieve high-performance spintronic devices

Huang

Wang

et al. 2020

Applied Physics Reviews

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The ability to tune magnetic orders, such as magnetic anisotropy and topological spin texture, is desired in order to achieve high-performance spintronic devices. A recent strategy has been to employ interfacial engineering techniques, such as the introduction of spin-correlated interfacial coupling, to tailor magnetic orders and achieve novel magnetic properties. We chose a unique polar-nonpolar LaMnO3/SrIrO3 superlattice because Mn (3d)/Ir (5d) oxides exhibit rich magnetic behaviors and strong spin-orbit coupling through the entanglement of their 3d and 5d electrons. Through magnetization and 3 magnetotransport measurements, we found that the magnetic order is interface-dominated as the superlattice period is decreased. We were able to then effectively modify the magnetization, tilt of the ferromagnetic easy axis, and symmetry transition of the anisotropic magnetoresistance of the LaMnO3/SrIrO3 superlattice by introducing additional Mn (3d) and Ir (5d) interfaces. Further investigations using in-depth first-principles calculations and numerical simulations revealed that these magnetic behaviors could be understood by the 3d/5d electron correlation and Rashba spin-orbit coupling.The results reported here demonstrate a new route to synchronously engineer magnetic properties through the atomic stacking of different electrons, contributing to future applications.

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Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La1−xSrxMnO

Cited by 115 publications

References 49 publications

Emergent electric field control of phase transformation in oxide superlattices

Emergent electric field control of phase transformation in oxide superlattices

Novel spin-orbit coupling driven emergent states in iridate-based heterostructures

Tailoring magnetic order via atomically stacking 3d/5d electrons to achieve high-performance spintronic devices

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