Výsledky vyhledávání - "C. J. van der Beek"

Direct visualization of local interaction forces in Bi2Sr2CaCu2O8+δ vortex matter

Autor: R. Cortés Maldonado, Yanina Fasano, N.R. CejasBolecek, M. I. Dolz, J. Aragón Sánchez, Marcin Konczykowski, C. J. van der Beek

Publikováno v: Materials Today: Proceedings. 14:34-37

We study the local vortex-vortex interaction force fi of the structure frozen during a field-cooling process in an electron-irradiated Bi2Sr2CaCu2O8+δ sample. We compute this magnitude from snapshots of the vortex structure obtained via magnetic dec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d93d81ba3aee7d80e2d24c451e68c973
https://doi.org/10.1016/j.matpr.2019.05.047

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Entropy jump at the first-order vortex phase transition in Bi2Sr2CaCu2O8+δ with columnar defects

Autor: M. I. Dolz, G. Rumi, Marcin Konczykowski, Pablo Pedrazzini, H. Pastoriza, L. J. Albornoz, C. J. van der Beek, Yanina Fasano

Publikováno v: Materials Today: Proceedings
Materials Today: Proceedings, 2019, 14, pp.30-33. ⟨10.1016/j.matpr.2019.05.046⟩
Materials Today: Proceedings, Elsevier, 2019, 14, pp.30-33. ⟨10.1016/j.matpr.2019.05.046⟩

We study the entropy jump associated with the first-order vortex melting transition (FOT) in Bi2Sr2CaCu2O8+δ crystals by means of Hall probe magnetometry. The samples present a diluted distribution of columnar defects (CD) introduced by irradiation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc013907179bda3ded6ecb558924e980
https://doi.org/10.1016/j.matpr.2019.05.046

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Akademický článek

Charge puddles in a completely compensated topological insulator

Autor: C W Rischau, A Ubaldini, E Giannini, C J van der Beek

Publikováno v: New Journal of Physics, Vol 18, Iss 7, p 073024 (2016)

Compensation of intrinsic charges is widely used to reduce the bulk conductivity of 3D topological insulators (TIs). Here we use low temperature electron irradiation-induced defects paired with in situ electrical transport measurements to fine-tune t

Externí odkaz: https://doaj.org/article/daf98d045e5d4072a0369acc7652dd19

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Enhancement of penetration field in vortex matter in mesoscopic superconductors due to Andreev bound states

Autor: Joaquín Puig, M. I. Dolz, C. J. van der Beek, N. R. Cejas Bolecek, Gladys Nieva, H. Pastoriza, Marcin Konczykowski, J. Guimpel, Yanina Fasano

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2019, 100 (6), ⟨10.1103/PhysRevB.100.064508⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2019, 100 (6), ⟨10.1103/PhysRevB.100.064508⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

We study the field for the penetration of a first vortex, HP, for vortex matter nucleated in micron-sized samples with edges aligned along the nodal and antinodal directions of the d-wave superconducting order parameter of Bi2Sr2CaCu2O8-δ. Here we p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da648fa9456cc8333e9307242fa36c97
https://hal.science/hal-02357579

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Photoinduced filling of near-nodal gap in Bi2Sr2CaCu2O8+δ

Autor: A. Taleb-Ibrahimi, Luca Perfetti, Marino Marsi, C. Piovera, Zhongkai Zhang, Matteo d'Astuto, Evangelos Papalazarou, C. J. van der Beek

Publikováno v: Physical Review B. 96

We report time- and angle-resolved spectroscopic measurements in optimally doped ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}{\mathrm{CaCu}}_{2}{\mathrm{O}}_{8+\ensuremath{\delta}}$. The photoelectron intensity maps are monitored as a function of temperature,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1bc5e4f6a1bf4056e296bef7d2e7bec2
https://doi.org/10.1103/physrevb.96.064510

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Excess of topological defects induced by confinement in vortex nanocrystals

Autor: N. R. Cejas Bolecek, A. B. Kolton, Yanina Fasano, M. I. Dolz, Marcin Konczykowski, H. Pastoriza, C. J. van der Beek

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (2), ⟨10.1103/PhysRevB.96.024507⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2017, 96 (2), ⟨10.1103/PhysRevB.96.024507⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

We directly image individual vortex positions in nanocrystals in order to unveil the structural property that contributes to the depletion of the entropy jump entailed at the first-order transition. On reducing the nanocrystal size, the density of to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e140d7c65d9b73420d4c49cd8826a78c

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SANS study of vortex lattice structural transition in optimally doped (Ba 1− x K x )Fe 2 As 2

Autor: Yixi Su, C. J. van der Beek, S Demirdiş, Sebastian Mühlbauer, Th. Wolf

Publikováno v: Journal of Physics: Condensed Matter
Journal of Physics: Condensed Matter, IOP Publishing, 2016, 28 (42), pp.425701. ⟨10.1088/0953-8984/28/42/425701⟩
Journal of physics / Condensed matter 28(42), 425701-(2016). doi:10.1088/0953-8984/28/42/425701
Journal of Physics: Condensed Matter, 2016, 28 (42), pp.425701. ⟨10.1088/0953-8984/28/42/425701⟩

Small-angle neutron scattering on high quality single crystalline Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$ reveals the transition from a low--field vortex solid phase with orientational order to a vortex polycrystal at high magnetic field. The vortex order-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e760964a08335696166d82e2b749911
https://hal.archives-ouvertes.fr/hal-02354656

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Ultrafast dynamics of fluctuations in high-temperature superconductors far from equilibrium

Autor: C. J. van der Beek, C. Piovera, Tobias Kampfrath, Giulio Biroli, Martin Wolf, Luca Perfetti, Bruno Sciolla

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2015, physical review letters, 114, pp.067003
Physical Review Letters, 2015, physical review letters, 114, pp.067003

Despite extensive work on high-temperature superconductors, the critical behavior of an incipient condensate has so far been studied exclusively under equilibrium conditions. Here, we excite Bi2Sr2CaCu2O8+d with a femtosecond laser pulse and monitor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dba0e939fe13ef3d30c828b52a959003
https://hal-cea.archives-ouvertes.fr/cea-01188589

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