Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Lisa Paulius"'
Autor:
Wai-Kwong Kwok, Lisa Paulius, Matthew Smylie, Prashanta Niraula, Asghar Kayani, Shahid Iqbal, Ulrich Welp, E. Bokari
Publikováno v:
MRS Advances. 4:119-124
We use irradiation with 50-MeV Cu-ions to create vortex pinning defects in high-temperature superconducting Y1Ba2Cu3O7-x coated conductors using a beam-rastering approach that allows for the uniform irradiation of large ample areas. Our samples conta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::755170bbab524445ea72cbc46cd9a8ff
https://doi.org/10.1557/adv.2019.143
https://doi.org/10.1557/adv.2019.143
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
Autor:
J. Figueras, Lisa Paulius, Xavier Obradors, W. K. Kwok, G. W. Crabtree, Teresa Puig, Guy Deutscher
Publikováno v:
Nature Physics. 2:402-407
In high-temperature superconductors, magnetic field lines penetrate the samples through vortices arranged in an Abrikosov vortex lattice. In a magnetic field Hm(T ) below the upper critical field Hc2(T ) that destroys bulk superconductivity, the vort
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::781310014b2cab9369415f76a902ef4a
https://doi.org/10.1038/nphys311
https://doi.org/10.1038/nphys311
Autor:
Teresa Puig, Goran Karapetrov, G. W. Crabtree, J. Figueras, Ulrich Welp, Andreas Rydh, Lisa Paulius, Xavier Obradors, Wai-Kwong Kwok
Publikováno v:
Physica C: Superconductivity and its Applications. :176-179
We have carried out angular dependent magneto-transport measurements on optimally doped, untwinned YBa 2 Cu 3 O 7− δ crystals irradiated with high energy heavy ions to determine the onset of vortex line tension in the vortex liquid state. The dose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d55518e8afa11e8c27acf854d3e4cbb
https://doi.org/10.1016/j.physc.2005.12.029
https://doi.org/10.1016/j.physc.2005.12.029
Publikováno v:
Physica C: Superconductivity. :14-17
Columnar defects are shown to produce anisotropic pinning in the vortex liquid state of YBCO. We interpret the disappearance of anisotropic pinning as signaling the loss of longitudinal correlation of vortices as thermal fluctuations dominate their l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbcadef97f3427e707d10ef13ee526b9
https://doi.org/10.1016/j.physc.2005.01.015
https://doi.org/10.1016/j.physc.2005.01.015
Autor:
Lisa Paulius, Aaron J. Rosenberg, John R. Kirtley, Rahim R. Ullah, Mark B. Ketchen, Johanna C. Palmstrom, Y.-K.-K. Jung, Connor M. Holland, Daniel Schiessl, Kathryn A. Moler, Gerald W. Gibson
Publikováno v:
Applied Physics Letters. 109:232601
Vibrations can cause noise in scanning probe microscopies. Relative vibrations between the scanning sensor and the sample are important but can be more difficult to determine than absolute vibrations or vibrations relative to the laboratory. We measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8814262325bc916bd08de5d07e763470
https://doi.org/10.1063/1.4971201
https://doi.org/10.1063/1.4971201
Autor:
David J. Hofman, Lisa Paulius, William Moulton, Goran Karapetrov, W. K. Kwok, R. J. Olsson, G. W. Crabtree
Publikováno v:
Physica C: Superconductivity. :953-956
The upper and lower critical points are investigated in untwinned YBa 2 Cu 3 O 7−δ single crystals with dilute columnar defects. Dilute columnar defects raise the upper critical point, indicating that the transition near the upper critical point i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::967f17dff64cc0cd420bc93a05a3fb35
https://doi.org/10.1016/s0921-4534(00)00750-4
https://doi.org/10.1016/s0921-4534(00)00750-4
Publikováno v:
Physica C: Superconductivity. :995-998
The velocity profile of vortices driven by a non-uniform Lorentz force contains information on the dynamic correlation of the moving liquid, lattice, and glassy phases. We describe transport experiments using a disk geometry that allow the velocity p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaaec31b8630f8f2dc70db37f829f835
https://doi.org/10.1016/s0921-4534(00)00761-9
https://doi.org/10.1016/s0921-4534(00)00761-9
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