Zobrazeno 1 - 10
of 21
pro vyhledávání: '"A. M. Petrean"'
Publikováno v:
Physica C: Superconductivity and its Applications. 505:65-69
We report on the effects of introducing columnar defects by irradiation in clean single crystals of YBa2Cu3O7−δ in a direction parallel to the ab-plane. The defects were introduced by bombarding the samples with 208Pb56+ ions at an energy of 1.4 G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3404f909cf705d9bcc5e8fd17874571
https://doi.org/10.1016/j.physc.2014.07.006
https://doi.org/10.1016/j.physc.2014.07.006
Publikováno v:
Physical Review Letters. 84:5852-5855
We report on magnetoresistance measurements of the effects of 9 MeV proton irradiation on a clean, untwinned single crystal of ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$. For the first time, evidence for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a5748fc8b430327e177dbfc880573ba
https://doi.org/10.1103/physrevlett.84.5852
https://doi.org/10.1103/physrevlett.84.5852
Autor:
R. J. Olsson, W. K. Kwok, A. M. Petrean, Goran Karapetrov, G. W. Crabtree, Lisa Paulius, William Moulton, V. Tobos
Publikováno v:
Physica C: Superconductivity. 332:71-79
The effect of line disorder induced by heavy ion irradiation and of point disorder induced by proton and electron irradiation on the upper and lower critical points in the vortex phase diagram of YBCO is presented. The authors find that dilute line d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6516ce9eb1b32200a2bc88c9c9759e40
https://doi.org/10.1016/s0921-4534(99)00647-4
https://doi.org/10.1016/s0921-4534(99)00647-4
Autor:
W. K. Kwok, Clement Burns, J. A. Fendrich, Lisa Paulius, A. M. Petrean, G. W. Crabtree, V. Tobos, R. J. Olsson, S. Ferguson
Publikováno v:
Physical Review B. 61:R11910-R11913
We demonstrate the gradual evolution of the first-order vortex melting transition into a continuous transition with the systematic addition of point disorder induced by proton irradiation. The evolution occurs via the decrease of the upper critical p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7822edb26b3685512a0a3f25b64da530
https://doi.org/10.1103/physrevb.61.r11910
https://doi.org/10.1103/physrevb.61.r11910
Publikováno v:
Physica C: Superconductivity. 332:370-373
A vibrating sample technique was used to study the elastic behavior of the magnetic vortex system in YBa2Cu3O7 single crystals. The setup consists of a system of two weakly coupled mechanical oscillators (transducer, sample), the frequency and Q of w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f15eb1371dfe08789d7f0267f12b0869
https://doi.org/10.1016/s0921-4534(99)00705-4
https://doi.org/10.1016/s0921-4534(99)00705-4
Autor:
L. M. Paulius, W. K. Kwok, A. M. Petrean, G. W. Crabtree, V. Tobos, William Moulton, R. J. Olsson, Goran Karapetrov
Publikováno v:
Journal of Superconductivity: Incorporating Novel Magnetism. 13:741-748
The disordered vortex phases induced by line and point pinning in YBa2Cu3O7−δ are explored. At high defect densities, only a single disordered solid separated from the liquid phase by a melting line is observed. At low defect densities the topolog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e14ccc43fac13d60f387b59720c2cbb0
https://doi.org/10.1023/a:1007862114629
https://doi.org/10.1023/a:1007862114629
Autor:
Hugo Safar, L. M. Paulius, A. M. Petrean, W. K. Kwok, R. J. Olsson, Daniel Lopez, G. W. Crabtree
Publikováno v:
Materials Science Forum. :314-321
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fc4a6b6a60428f25ddc9d250766d5ff
https://doi.org/10.4028/www.scientific.net/msf.315-317.314
https://doi.org/10.4028/www.scientific.net/msf.315-317.314
Autor:
Daniel Lopez, W. K. Kwok, A. M. Petrean, G. W. Crabtree, Hugo Safar, R. J. Olsson, Lisa Paulius
Publikováno v:
Physical Review Letters. 82:1277-1280
We report transport measurements in the mixed state of YBa{sub 2}Cu {sub 3}O{sub 7{minus}{delta}} single crystals using a contact geometry which enables control of the gradient of the Lorentz force acting on the vortices. The spatial dependence of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4fe18f8738f440f2cc0064950f27a51
https://doi.org/10.1103/physrevlett.82.1277
https://doi.org/10.1103/physrevlett.82.1277
Autor:
V. K. Thorsmølle, M. P. Maley, A. E. Koshelev, L. N. Bulaevskii, W. K. Kwok, A. M. Petrean, N. Morozov
Publikováno v:
Physical Review Letters. 82:1008-1011
The $c$-axis resistivity in irradiated and in pristine $\mathrm{Bi}{}_{2}\mathrm{Sr}{}_{2}\mathrm{CaCu}{}_{2}\mathrm{O}{}_{8\ensuremath{-}\ensuremath{\delta}}$ crystals is measured as a function of the in-plane magnetic field component at fixed out-o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42f99a8d0c0241cbe0812133fdd5ea79
https://doi.org/10.1103/physrevlett.82.1008
https://doi.org/10.1103/physrevlett.82.1008
Publikováno v:
Physical Review B. 58:14594-14608
Pinning by splayed and columnar defects created by 3.9 GeV {sup 197}Au{sup 29+} ions is investigated using transport measurements of vortex motion perpendicular and parallel to the splay plane in untwinned crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d5e7b95f004a49b4668f6a7ce120b10
https://doi.org/10.1103/physrevb.58.14594
https://doi.org/10.1103/physrevb.58.14594