Exchange-bias effect at La<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mrow><mml:mn>0.75</mml:mn></mml:mrow></mml:msub></mml:math>Sr<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mrow><mml:mn>0.25</mml:mn></mml:mrow></mml:msub></mml:math>MnO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>3</mml:mn></mml:msub></mml:math>/LaNiO<mml:math xmlns:mm

Rojas-Sánchez, J.-C.; Nelson-Cheeseman, Brittany B.; Granada, M.; Arenholz, Elke; Steren, L. B.

doi:10.1103/physrevb.85.094427

Cited by 74 publications

(68 citation statements)

References 38 publications

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“…46,47 It is also necessary to mention additional experimental observations. Despite the experiments of Gibert et al, recent related experiments observed an exchange bias in the (001)-stacking of La 0.75 Sr 0.25 MnO 3 /LNO SLs, 44 as well as induced magnetism in (001)-stacked (LMO) 2 /(LNO) n SLs, 45 which at least naively seem to disagree with Gibert et al 's experiments and the present simulation. A probable reason for this discrepancy may reside in the interfacial intermixing and disorder, which is unavoidable even in the best state-of-the-art experiments in the oxide interfaces context.…”

Section: Additional Discussioncontrasting

confidence: 99%

“…12,14,43 Although not precisely in a one-to-one correspondence, in pure manganite SLs the induced magnetism can be traced back to the phase diagram of bulk manganites. By contrast, in the LMO/LNO SLs, although experiments also find a charge transfer from Mn to Ni, 24,44,45 the induced magnetization is nearly decoupled from this e g electron transfer qualitatively different from the physics scenario in pure manganite SLs. Instead, here the physics for induced magnetization is more analogous to the dimensionality control of electronic phase transitions in LNO-LaAlO 3 heterostructures.…”

Section: Additional Discussionmentioning

confidence: 69%

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Quantum confinement induced magnetism in LaNiO3-LaMnO3superlattices

Dong

Dagotto

2013

Phys. Rev. B

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The emergence of magnetic reconstructions at the interfaces of oxide heterostructures are often explained via subtle modifications in the electronic densities, exchange couplings, or strain. Here an additional possible route for induced magnetism is studied in the context of the (LaNiO3)n/(LaMnO3)n superlattices using a hybrid tight-binding model. In the LaNiO3 region, the induced magnetizations decouple from the intensity of charge leakage from Mn to Ni, but originate from the spin-filtered quantum confinement present in these nanostructures. In general, the induced magnetization is the largest for the (111)-stacking and the weakest for the (001)-stacking superlattices, results compatible with the exchange bias effects reported by Gibert et al. Nat. Mater. 11, 195 (2012).

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Section: Additional Discussioncontrasting

confidence: 99%

Section: Additional Discussionmentioning

confidence: 69%

Quantum confinement induced magnetism in LaNiO3-LaMnO3superlattices

Dong

Dagotto

2013

Phys. Rev. B

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“…17 We observed a monotonic decrease in coercive field with an increase in temperature. This can be understood from considering the effects of thermal fluctuations of the blocked moment across the anisotropy barrier.…”

Section: A)mentioning

confidence: 62%

Charge transfer-induced magnetic exchange bias and electron localization in (111)- and (001)-oriented LaNiO3/LaMnO3 superlattices

Wei

Barzola‐Quiquia

Yang

et al. 2017

Applied Physics Letters

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High-quality lattice-matched LaNiO3/LaMnO3 superlattices with monolayer terrace structure have been grown on both (111)- and (001)-oriented SrTiO3 substrates by pulsed laser deposition. In contrast to the previously reported experiments, a magnetic exchange bias is observed that reproducibly occurs in both (111)- and (001)-oriented superlattices with the thin single layers of 5 and 7 unit cells, respectively. The exchange bias is theoretically explained by charge transfer-induced magnetic moments at Ni atoms. Furthermore, magnetization data at low temperature suggest two magnetic phases in the superlattices, with Néel temperature around 10 K. Electrical transport measurements reveal a metal-insulator transition with strong localization of electrons in the superlattices with the thin LaNiO3 layers of 4 unit cells, in which the electrical transport is dominated by two-dimensional variable range hopping.

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“…A few experimental investigations have explored heterostructures combining manganites and nickelates [5,[15][16][17][18][19][20][21]. Ferromagnetism that is present only at the interface between LaNiO 3 and CaMnO 3 has been observed by x-ray magnetic circular dichroism combined with polarized neutron reflectometry [16].…”

Section: Introductionmentioning

confidence: 99%

Interfacial properties ofLaMnO3/LaNiO3superlattices grown along (001) and (111) orientations

et al. 2015

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We have employed x-ray absorption spectroscopy and x-ray magnetic circular dichroism (XMCD) at the Ni and Mn L 3,2 edges in LaMnO 3 /LaNiO 3 superlattices grown along (001) and (111) orientations. Our results show a significant XMCD signal and thus the presence of magnetic moments localized on both Ni and Mn, which are ferromagnetically coupled to each other. X-ray absorption experiments reveal a charge transfer between Ni and Mn which is larger for (111) than for (001) superlattices. These results are compared to theoretical predictions for such superlattices.

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Exchange-bias effect at La0.75Sr0.25MnO3/LaNiO

Cited by 74 publications

References 38 publications

Quantum confinement induced magnetism in LaNiO3-LaMnO3superlattices

Quantum confinement induced magnetism in LaNiO3-LaMnO3superlattices

Charge transfer-induced magnetic exchange bias and electron localization in (111)- and (001)-oriented LaNiO3/LaMnO3 superlattices

Interfacial properties ofLaMnO3/LaNiO3superlattices grown along (001) and (111) orientations

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