6 papers
Effects of Vortex Pinning and Thermal Fluctuations on the Josephson Plasma Resonance in Tl2Ba2CaCu2O8 and YBa2Cu3O6.5
Diana Dulic, J. Hak, D. van der Marel +5
Infrared spectroscopy has been used to investigate the temperature dependence and c-axis magnetic field dependence of the Josephson plasma resonance in optimally doped Tl2Ba2CaCu2O…
C-axis Penetration Depth and Inter-layer Conductivity in the Thallium Based Cuprate Superconductors
D. Dulic, D. van der Marel, A. A. Tsvetkov +4
The c-axis Josephson plasmon in optimally doped single-layer and bi-layer high Tc cuprates Tl2201 and Tl2212 have been investigated using infrared spectroscopy. We observed the pla…
New features in the microwave response of YBCO crystals: Evidence for a multi-component order parameter
H. Srikanth, Balam A. Willemsen, T. Jacobs +4
New features are reported in precision measurements of the complex microwave conductivity of high quality crystals grown in crucibles. A third p…
Critical State Flux Penetration and Linear Microwave Vortex Response in YBa_2Cu_3O_{7-x} Films
Balam A. Willemsen, J. S. Derov, S. Sridhar
The vortex contribution to the dc field (H) dependent microwave surface impedance Z_s = R_s+iX_s of YBa_2Cu_3O_{7-x} thin films was measured using suspended patterned resonators. Z…
Comments on "Vortex Glass and Lattice Melting Transitions in a YNi_2B_2C Single Crystal"
S. Sridhar, S. Oxx, B. A. Willemsen +2
Recently, Mun et.al. (Phys. Rev. Lett., 76, 2790 (1996)) have published their results on single crystal YNi_2B_2C, claiming that their experimental observations can be explained in…
Vortex Response and Critical Fields observed via rf penetration depth measurements on the superconductor YNi_2B_2C
S. Oxx, D. P. Choudhury, Balam A. Willemsen +4
Measurements of the rf penetration depth λ(T,H,θ) are used to study the superconducting order parameter, vortex dynamics in the mixed state and delineate critical fields in the bor…