Grain-Boundary Josephson Junctions in the High-Temperature Superconductors

Gross, R.

doi:10.1007/978-1-4612-2584-3_6

Cited by 54 publications

(32 citation statements)

References 51 publications

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“…Recent reviews have been given by Gross et al [7,9]. Here, we briefly summarize the main results relevant to the tunneling spectroscopy experiments discussed below.…”

Section: Transport Mechanism In Gbjsmentioning

confidence: 91%

“…The data have been obtained using [001] tilt HTS grain boundary Josephson junctions (GBJs). In contrast to low temperature scanning tunneling spectroscopy and experiments using SIN-type planar junctions, GBJs represent superconductor-insulator-superconductor (SIS) Josephson junctions [7,8,9]. An important advantage of the use of GBJs as compared to low temperature scanning tunneling spectroscopy is the very good long term stability of GBJs which allows for the detailed study of the temperature and magnetic field dependence of the tunneling spectra.…”

Section: Introductionmentioning

confidence: 99%

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Andreev bound states in high temperature superconductors

et al. 1998

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Abstract. Andreev bound states at the surface of superconductors are expected for any pair potential showing a sign change in different k-directions with their spectral weight depending on the relative orientation of the surface and the pair potential. We report on the observation of Andreev bound states in high temperature superconductors (HTS) employing tunneling spectroscopy on bicrystal grain boundary Josephson junctions (GBJs). The tunneling spectra were studied as a function of temperature and applied magnetic field. The tunneling spectra of GBJ formed by YBa2Cu3O 7−δ (YBCO), Bi2Sr2CaCu2O 8+δ (BSCCO), and La1.85Sr0.15CuO4 (LSCO) show a pronounced zero bias conductance peak that can be interpreted in terms of Andreev bound states at zero energy that are expected at the surface of HTS having a d-wave symmetry of the order parameter. In contrast, for the most likely s-wave HTS Nd1.85Ce0.15CuO4−y (NCCO) no zero bias conductance peak was observed. Applying a magnetic field results in a shift of spectral weight from zero to finite energy. This shift is found to depend nonlinearly on the applied magnetic field. Further consequences of the Andreev bound states are discussed and experimental evidence for anomalous Meissner currents is presented.

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“…Recent reviews have been given by Gross et al [7,9]. Here, we briefly summarize the main results relevant to the tunneling spectroscopy experiments discussed below.…”

Section: Transport Mechanism In Gbjsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Andreev bound states in high temperature superconductors

et al. 1998

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show abstract

“…Thirdly, there are studies using bicrystal grain boundary Josephson junctions (GBJs) that represent planar SIS configurations [13,18,22]. A detailed discussion of the transport properties of HTS-GBJs is given elsewhere [22][23][24][25]. It has been shown that with respect to the formation of ABS for the SIS junctions the same physics applies as to SIN junctions [26,27].…”

Section: Tunneling Spectroscopymentioning

confidence: 96%

Tunneling spectroscopy and order parameter symmetry of hole- and electron-doped cuprate superconductors

Alff

Gross

1999

Superlattices and Microstructures

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“…(4) follows This relationship can be utilized for determining the Jo of the Josephson junctions, e.g. by choosing the misorientation angle of bicrystal substrates [12]. Comparing the graphs in Fig.…”

Section: Inductances In Thin Film Applicationsmentioning

confidence: 99%

Peculiarities of RSFQ Applications with High-T_c Superconductors - an Approach for Design

1996

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Abstract.The significant progress in the development of Rapid Single Flux Quantum (RSFQ) logic circuits indicates their potential for fast cryoelectronic device applications. The possibilities of realizing logic components based on this principle with high-T, superconductive (HTS) materials have been studied by means of numerical computations. The most crucial task is to manage the trade-off between desired high critical currents and the loop inductances, which can not be made arbitrarily small. Parameter extractions for typical layout arrangements and dynamical simulations including thermal noise give justification for expecting small scale HTS-RSFQ implementations.

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Grain-Boundary Josephson Junctions in the High-Temperature Superconductors

Cited by 54 publications

References 51 publications

Andreev bound states in high temperature superconductors

Andreev bound states in high temperature superconductors

Tunneling spectroscopy and order parameter symmetry of hole- and electron-doped cuprate superconductors

Peculiarities of RSFQ Applications with High-T_c Superconductors - an Approach for Design

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Grain-Boundary Josephson Junctions in the High-Temperature Superconductors

Cited by 54 publications

References 51 publications

Andreev bound states in high temperature superconductors

Andreev bound states in high temperature superconductors

Tunneling spectroscopy and order parameter symmetry of hole- and electron-doped cuprate superconductors

Peculiarities of RSFQ Applications with High-Tc Superconductors - an Approach for Design

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Peculiarities of RSFQ Applications with High-T_c Superconductors - an Approach for Design