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Abdelhadi, M.; Jung, J.

doi:10.1103/physrevb.67.054502

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…Phase slips and the flow of current in filaments has also previously been proposed to explain resistivity close to T c in unpatterned YBa 2 Cu 3 O 7 ͑YBCO͒ films. 19,20 At currents above the critical current I c , current-driven phase slip centers ͑PSCs͒ have also been observed in both low-temperature superconductors 21 and high-temperature superconductors. 22,23 These manifest themselves as a series of rather regular voltage steps in the I͑V͒ characteristics.…”

Section: Introductionmentioning

confidence: 99%

Phase slips in submicrometerYBaCu3O7−δbridges

et al. 2005

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We have measured the resistance vs temperature, R͑T͒, and current vs voltage, I͑V͒, for a series of submicrometer YBa 2 Cu 3 O 7−␦ tracks. We find that superconductivity is suppressed when the room temperature resistance is greater than the superconducting resistance quantum, R q = h /4e 2 . In addition, we observe regular steps in the I͑V͒ characteristics of some bridges, which we associate with phase slip centers. For one bridge, with resistance just below the resistance quantum, R q , we find a gradual entry into the superconducting state which is well fit by theoretical predictions for thermally activated phase slips in a superconducting wire.

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Section: Introductionmentioning

confidence: 99%

Phase slips in submicrometerYBaCu3O7−δbridges

et al. 2005

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“…Oscillation phenomena on the R-T curves was observed, which was in the range from the superconductor transition temperature (T C ) to the pseudopotential temperature. The further study by Abdelhadi et al [9] revealed that this physical phenomenon was induced by the Phase Slip. The I V curves of the microbridge structures fabricated by Morales et al [10] show S figures, which is consistent with the superconductive phase slippage theory.…”

mentioning

confidence: 96%

The size effect on transport properties of colossal magnetoresistance materials La0.67Ca0.33MnO3

Lei

Guo

et al. 2008

Sci. China Ser. G-Phys. Mech. As

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High quality La 0.67 Ca 0.33 MnO 3 (LCMO) film was deposited via a novel pulsed electron deposition technique on SrTiO3(100) single crystal substrate. The micro-bridge with different widths was fabricated by using electron beam lithography (EBL) technique and their transport properties were studied. For the micro-bridges with width of 2 and 1.5 m, the insulator-to-metal transition temperature (T P ) keeps unchanged compared with the film. For the micro-bridges with width of 1 m, the T P shifts towards the lower temperature by 50 K. When the width decreases down to 500 nm, the insulator-to-metal transition disappears. The magnetoresistance behavior of these micro-bridges was studied, and the results show that the low field magnetoresistance (LFMR) decreases and the high field magnetoresistances (HFMR) keep almost unchanged as the width of micro-bridge is reduced. colossal magnetoresistance, pulsed electron deposition, electron beam lithography, electrical transport properties With the development of nanotechnology, the properties of materials on micro/nano scale attract more and more attention because many materials on such a scale show some different properties. Many new phenomena are anticipated to exhibit for further understanding of the underlying mechanism of the materials. Many multi-component oxides having interesting properties, such as superconductivity [1,2] , colossal magnetoresistivity (CMR) [3,4] and ferroelectricity, will play important roles in potential device applications of electronic devices, such as the high sensitive

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“…Highly non-linear I-V characteristics and anomalous resistance versus temperature behavior have been attributed to either collective flux-flow, phase slips or mesoscopic domains [19,20,21,22,23]. The V -I characteristics of YBCO microstrips fabricated using our technique are shown in Figure 2.…”

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confidence: 99%

Selective epitaxial growth of submicron complex oxide structures by amorphous SrTiO3

Morales

DiCiano

Wei

2005

Applied Physics Letters

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A chemical-free technique for fabricating submicron complex oxide structures has been developed based on selective epitaxial growth. The crystallinity and hence the conductivity of the complex oxide is inhibited by amorphous SrTiO3 (STO). Using a combination of pulsed laser deposition and electron-beam lithography, amorphous STO barriers are first deposited on a single crystal substrate. A thin film is then deposited on the patterned substrate with the amorphous STO barriers acting to electrically and physically isolate different regions of the film. Since no chemical or physical etchants come in contact with the deposited film, its integrity and stability are preserved. This technique has successfully produced sub-micron YBa2Cu3O 7−δ and La 2/3 Ca 1/3 MnO3 structures.

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Phase-slip-like resistivity in underdopedYBa2Cu3O7

Cited by 9 publications

References 21 publications

Phase slips in submicrometerYBaCu3O7−δbridges

Phase slips in submicrometerYBaCu3O7−δbridges

The size effect on transport properties of colossal magnetoresistance materials La0.67Ca0.33MnO3

Selective epitaxial growth of submicron complex oxide structures by amorphous SrTiO3

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