Observation of an odd longitudinal magnetoresistance in YBa2Cu3O7−δ single crystals with unidirected twins

Prodan, A.; Shklovskij, Valerij A.; Chabanenko, V. V.; Bondarenko, A. V.; Obolenskii, M. A.; Szymczak, H.; Piechota, S.

doi:10.1016/s0921-4534(98)00214-7

Cited by 22 publications

(16 citation statements)

References 16 publications

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“…12,18,[23][24][25][26][27][28][29] In this scenario, unlike the Glazman's theory where pinning is irrelevant, the pinning landscape plays a crucial role and the effect should be present even at high fields. All the experimental evidence reported so far ͑mainly on uniaxial pinning͒ shows that near the superconducting-normal transition a single ͑or multiple͒ anomalous peak in the transverse voltage develops.…”

Section: Resultsmentioning

confidence: 93%

Guided vortex motion in superconductors with a square antidot array

et al. 2003

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We have measured the in-plane anisotropy of the vortex mobility in a thin Pb film with a square array of antidots. The Lorentz force, acting on the vortices, was rotated by adding two perpendicular currents and keeping the amplitude of the net current constant. One set of voltage probes was used to detect the vortex motion. We show that the pinning landscape provided by the square antidot lattice influences the vortex motion in two different ways. First, the modulus of the vortex velocity becomes angular dependent with a lower mobility along the diagonals of the pinning array. Second, the vortex displacement is preferentially parallel to the principal axes of the underlying pinning lattice, giving rise to a misalignment between the vortex velocity and the applied Lorentz force. We show that this anisotropic vortex motion is temperature dependent and progressively fades out when approaching the normal state.

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Section: Resultsmentioning

confidence: 93%

Guided vortex motion in superconductors with a square antidot array

et al. 2003

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“…Their influence on the vortex dynamics was extensively studied during the last years in YBCO single crystals with unidirected twin boundaries (TB) using electrical transport measurements, [8][9][10][11][12] ac screening experiments, 13,14 simulations 15 and analytical methods. [16][17][18] For the case that the twin boundaries form an angle θ with the direction of an applied external current, the vortices feel an anisotropic pinning force.…”

Section: 7mentioning

confidence: 99%

Patterned irradiation ofYBa2Cu3O7−
Basset¹,
Jakob²,
Wirth³
et al. 2001
Phys. Rev. B
10
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15
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We present a new experiment on YBa2Cu3O7−x thin films using spatially resolved heavy ion irradiation. Structures consisting of a periodic array of strong and weak pinning channels were created with the help of metal masks. The channels formed an angle of ±45• with respect to the symmetry axis of the photolithographically patterned structures. Investigations of the anisotropic transport properties of these structures were performed. We found striking resemblance to guided vortex motion as it was observed in YBa2Cu3O7−x single crystals containing an array of unidirected twin boundaries. The use of two additional test bridges allowed to determine in parallel the resistivities of the irradiated and unirradiated parts as well as the respective current-voltage characteristics. These measurements provided the input parameters for a numerical simulation of the potential distribution of the Hall patterning. In contrast to the unidirected twin boundaries in our experiment both strong and weak pinning regions are spatially extended. The interfaces between unirradiated and irradiated regions therefore form a Bose-glass contact. The experimentally observed magnetic field dependence of the transverse voltage vanishes faster than expected from the numerical simulation and we interpret this as a hydrodynamical interaction between a Bose-glass phase and a vortex liquid.

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“…Graphical analysis of the nonlinear resistive responses is presented in the rotating current scheme.One of the open issues in the field of vortex pinning is the influence of isotropic point-like disorder on the vortex dynamics in the anisotropic washboard planar pinning potential (PPP) in those high-and low-T c superconductors which were used so far for resistive measurements of the guided vortex motion for different temperatures, magnetic fields H, and angles a between the channels of the PPP and the current density j-direction [1][2][3][4][5][6][7]. The objective of this paper is to present a few new results of a theory for the calculation of the nonlinear anisotropic magnetoresistivities at arbitrary value of competition between point-like and anisotropic planar disorder for the case of in-plane geometry of experiment.…”

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confidence: 99%

Influence of point-like disorder on the guiding of vortices in a rotating current scheme

Shklovskij

Dobrovolskiy²

2007

Physica C: Superconductivity

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Observation of an odd longitudinal magnetoresistance in YBa2Cu3O7−δ single crystals with unidirected twins

Cited by 22 publications

References 16 publications

Guided vortex motion in superconductors with a square antidot array

Guided vortex motion in superconductors with a square antidot array

Patterned irradiation ofYBa2Cu3O7−
Basset¹,
Jakob²,
Wirth³
et al. 2001
Phys. Rev. B
10
0
15
0
View full text Add to dashboard Cite

Influence of point-like disorder on the guiding of vortices in a rotating current scheme

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Observation of an odd longitudinal magnetoresistance in YBa2Cu3O7−δ single crystals with unidirected twins

Cited by 22 publications

References 16 publications

Guided vortex motion in superconductors with a square antidot array

Guided vortex motion in superconductors with a square antidot array

Patterned irradiation ofYBa2Cu3O7−Basset1, Jakob2, Wirth3 et al. 2001Phys. Rev. B100150View full textAdd to dashboardCite

Influence of point-like disorder on the guiding of vortices in a rotating current scheme

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Patterned irradiation ofYBa2Cu3O7−
Basset¹,
Jakob²,
Wirth³
et al. 2001
Phys. Rev. B
10
0
15
0
View full text Add to dashboard Cite