Cuprate/manganite heterostructures

Goldman, A. M.; Vas'ko, V. A.; Kraus, Patrick; Nikolaev, K. R.; Larkin, V. A.

doi:10.1016/s0304-8853(99)00348-0

Cited by 85 publications

(46 citation statements)

References 46 publications

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“…The relative magnitudes of three char-31 In our convention the g factor of free electrons is positive, g 0 ϭ2.0023 (Kittel, 1996). 32 See, for example, Osofsky (2000); Goldman et al (1999Goldman et al ( , 2001; Johnson (2001Johnson ( , 2002a; Maekawa et al (2001) ;Jedema, Nijboer, et al (2002); Tang et al (2002);and Wei (2002). 33 Johnson and Silsbee base their approach on irreversible thermodynamics and consider also the effects of a temperature gradient on spin-polarized transport, omitted in this section.…”

Section: F/n Junctionmentioning

confidence: 99%

“…Spintronics also benefits from a large class of emerging materials, such as ferromagnetic semiconductors Pearton et al, 2003), organic semiconductors (Dediu et al, 2002), organic ferromagnets (Pejaković et al, 2002;Epstein, 2003), high-temperature superconductors (Goldman et al, 1999), and carbon nanotubes (Tsukagoshi et al, 1999;Zhao et al, 2002), which can bring novel functionalities to the traditional devices. There is a continuing need for fundamental studies before the potential of spintronic applications can be fully realized.…”

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confidence: 99%

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Spintronics: Fundamentals and applications

2004

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Spintronics, or spin electronics, involves the study of active control and manipulation of spin degrees of freedom in solid-state systems. This article reviews the current status of this subject, including both recent advances and well-established results. The primary focus is on the basic physical principles underlying the generation of carrier spin polarization, spin dynamics, and spin-polarized transport in semiconductors and metals. Spin transport differs from charge transport in that spin is a nonconserved quantity in solids due to spin-orbit and hyperfine coupling. The authors discuss in detail spin decoherence mechanisms in metals and semiconductors. Various theories of spin injection and spin-polarized transport are applied to hybrid structures relevant to spin-based devices and fundamental studies of materials properties. Experimental work is reviewed with the emphasis on projected applications, in which external electric and magnetic fields and illumination by light will be used to control spin and charge dynamics to create new functionalities not feasible or ineffective with conventional electronics. CONTENTS

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Section: F/n Junctionmentioning

confidence: 99%

mentioning

confidence: 99%

Spintronics: Fundamentals and applications

2004

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“…Figure 15 shows that the BFO/YBCO data can be fitted successfully using the extended RT Model [Eq. (6)]. The model reproduces the low-temperature fast relaxation and crossing of ∆R/R from positive to negative at short time delays, as well as the recovery at long time delays.…”

Section: B Bfo/ybco: Extended Rothwarf-taylor Modelmentioning

confidence: 99%

“…2,3 Complex oxide heterostructures of superconductors have been studied extensively in recent years. [4][5][6] Bringing different transition metal cations with their localized d-electron physics and interacting charge, spin, and lattice degrees of freedom, into contact in a tunable crystalline environment, activates new electronic properties not observable in bulk compounds. Epitaxial strain mismatch, atomic coordination frustration, ordered spin and orbital states, charge flow across the interface, chemical frustration, and competing phases placed in close proximity conspire for new phases to emerge.…”

Section: Introductionmentioning

confidence: 99%

Interfacial effects revealed by ultrafast relaxation dynamics inBiFeO3/YBa2Cu3O7bilayers

Springer

Nair

et al. 2016

Phys. Rev. B

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The temperature dependence of the relaxation dynamics in the bilayer thin film heterostructure composed of multiferroic BiFeO3 (BFO) and superconducting YBa2Cu3O7 (YBCO) grown on (001) SrTiO3 substrate is studied by time-resolved pump-probe technique, and compared with that of pure YBCO thin film grown under the same growth conditions. The superconductivity of YBCO is found to be retained in the heterostructure. We observe a speeding up of the YBCO recombination dynamics in the superconducting state of the heterostructure, and attribute it to the presence of weak ferromagnetism at the BFO/YBCO interface as observed in magnetization data. An extension of the Rothwarf-Taylor model is used to fit the ultrafast dynamics of BFO/YBCO, that models an increased quasiparticle occupation of the ferromagnetic interfacial layer in the superconducting state of YBCO.

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“…4,5 There have been extensive studies of polarized and unpolarized quasiparticle injection in conventional s-wave superconductors. 1 [7][8][9][10] the YBCO in all such studies has c axis perpendicular to the plane of the substrate. Since superconductivity in YBCO lies in the CuO 2 planes ͑ab plane͒, the c-axis oriented structure does not allow injection of quasiparticles along the nodal or fully gapped directions of the Fermi surface.…”

mentioning

confidence: 99%

Growth of [110] La2∕3Sr1∕3MnO3–YBa2Cu3O7 heterostructures

Mandal

Bose

Sharma

et al. 2006

Applied Physics Letters

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Y Ba 2 Cu 3 O 7 – La 2 ∕ 3 Sr 1 ∕ 3 Mn O 3 heterostructures of [110] orientation are grown to allow direct injection of spin polarized holes from the La2∕3Sr1∕3MnO3 into the CuO2 superconducting planes. The magnetic response of the structure at T<Tsc shows both diamagnetic and ferromagnetic moments with [001] direction as magnetic easy axis. While the superconducting transition temperature (Tsc) of these structures is sharp (ΔTsc≃2.5K), the critical current density (Jc) follows a dependence of the type Jc=Jo(1−T∕Tsc)3∕2 with highly suppressed Jo(≃2×104A∕cm2), indicating strong pair breaking effects of the ferromagnetic boundary.

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Cuprate/manganite heterostructures

Cited by 85 publications

References 46 publications

Spintronics: Fundamentals and applications

Spintronics: Fundamentals and applications

Interfacial effects revealed by ultrafast relaxation dynamics inBiFeO3/YBa2Cu3O7bilayers

Growth of [110] La2∕3Sr1∕3MnO3–YBa2Cu3O7 heterostructures

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