Nanolithography Based on Real-Time Electrically Controlled Indentation with an Atomic Force Microscope for Nanocontact Elaboration

Bouzéhouane, K.; Fusil, S.; Bibès, Manuel; Carrey, Julian; Blon, Thomas; Du, M Le; Sénéor, Pierre; Cros, Vincent; Vila, Laurent

doi:10.1021/nl034610j

Cited by 58 publications

(51 citation statements)

References 16 publications

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“…The Fe layers were grown by RF sputtering at room temperature and covered by a naturally oxidized Al layer, resulting in a AlO x (1.5 nm)/Al(1.5 nm) cap. The tunnel junctions were defined by nanoindentation lithography 46,47 with top electrodes of either Au/CoO/Co or Au/CoO/Co/Fe (see also ref. 26 for details on the role of CoO).…”

Section: Methodsmentioning

confidence: 99%

Interface-induced room-temperature multiferroicity in BaTiO3

et al. 2011

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Multiferroic materials possess two or more ferroic orders but have not been exploited in devices owing to the scarcity of room-temperature examples. Those that are ferromagnetic and ferroelectric have potential applications in multi-state data storage if the ferroic orders switch independently, or in electric-field controlled spintronics if the magnetoelectric coupling is strong. Future applications could also exploit toroidal moments and optical effects that arise from the simultaneous breaking of time-reversal and space-inversion symmetries. Here, we use soft X-ray resonant magnetic scattering and piezoresponse force microscopy to reveal that, at the interface with Fe or Co, ultrathin films of the archetypal ferroelectric BaTiO 3 simultaneously possess a magnetization and a polarization that are both spontaneous and hysteretic at room temperature. Ab initio calculations of realistic interface structures provide insight into the origin of the induced moments and bring support to this new approach for creating room-temperature multiferroics.

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Section: Methodsmentioning

confidence: 99%

Interface-induced room-temperature multiferroicity in BaTiO3

et al. 2011

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“…There are two main types of SPL. One is a destructive method that physically, chemically, or electronically deforms the substrate's surface to make up the pattern by providing the substrate with energy; [37,[146][147][148] the other is a constructive way in which the patterning is performed by directly transferring chemical species to the surface. [149] Because the sharp tips of a scanning probe microscope with a radius smaller than 10 nm can be neatly and controllably manipulated across the substrate, SPL can be utilized to construct nanogap electrodes.…”

Section: Scanning Probe Lithography and Manipulation Of Single Atomsmentioning

confidence: 99%

Nanogap Electrodes

2009

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Nanogap electrodes (namely, a pair of electrodes with a nanometer gap) are fundamental building blocks for the fabrication of nanometer‐sized devices and circuits. They are also important tools for the examination of material properties at the nanometer scale, even at the molecular scale. In this review, the techniques for the fabrication of nanogap electrodes, the preparation of assembled devices based on the nanogap electrodes, and the potential application of these nanodevices for analysis of material properties are introduced. The history, the research status, and the prospects of nanogap electrodes are also discussed.

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“…23 In these experiments, the resistance of the LSMO bottom electrode was always small enough to ensure homogeneous current flow through the junction. The I͑V͒ curve of the right inset in Fig.…”

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confidence: 99%

Spin filtering through ferromagneticBiMnO3tunnel barriers

et al. 2005

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We report on experiments of spin filtering through ultrathin single-crystal layers of the insulating and ferromagnetic oxide BiMnO 3 ͑BMO͒. The spin polarization of the electrons tunneling from a gold electrode through BMO is analyzed with a counterelectrode of the half-metallic oxide La 2/3 Sr 1/3 MnO 3 ͑LSMO͒. At 3 K we find a 50% change of the tunnel resistances according to whether the magnetizations of BMO and LSMO are parallel or opposite. This effect corresponds to a spin-filtering efficiency of up to 22%. Our results thus show the potential of complex ferromagnetic insulating oxides for spin filtering and injection.

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Nanolithography Based on Real-Time Electrically Controlled Indentation with an Atomic Force Microscope for Nanocontact Elaboration

Cited by 58 publications

References 16 publications

Interface-induced room-temperature multiferroicity in BaTiO3

Interface-induced room-temperature multiferroicity in BaTiO3

Nanogap Electrodes

Spin filtering through ferromagneticBiMnO3tunnel barriers

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