TY - GEN
T1 - Josephson plasma resonance observed in Tl2Ba2CaCu2O8 superconducting thin films using terahertz time-domain spectroscopy
AU - Thorsmølle, V. K.
AU - Averitt, R. D.
AU - Maley, M. P.
AU - Taylor, Antoinette Jane
AU - Bulaevskii, L. N.
AU - Helm, C.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Summary form only given. The c-axis Josephson plasma resonance (JPR) in highly anisotropic layered cuprate superconductors originates from the interlayer tunneling of Cooper pairs. The JPR, ωpc=c/λc√(ε∞c) is directly related to the London penetration depth along the c-axis, λc, and is thus a fundamental probe of the superconducting state and an excellent tool to study these highly anisotropic systems. ε∞c is the high frequency dielectric constant along the c-axis. For T蠐Tc, the temperature dependence of λc is related to the symmetry of the order parameter. For T close to T. the appearance of the JPR probes the onset of interlayer phase coherence. Furthermore, the JPR spectral width is a measure of the quasiparticle scattering rate. In a magnetic field, the JPR probes the correlation of pancake vortices along the c-axis and is a tool to study the B-T phase diagram. The JPR of high-Tc superconductors with extreme anisotropy such as the bismuth, thallium, and mercury based high-Tc superconductors lies in the far-infrared and is thus amenable to study using terahertz time-domain spectroscopy (THz-TDS). We have measured the JPR in Tl2Ba2CaCu2O8 superconducting thin films employing THz-TDS in transmission.
AB - Summary form only given. The c-axis Josephson plasma resonance (JPR) in highly anisotropic layered cuprate superconductors originates from the interlayer tunneling of Cooper pairs. The JPR, ωpc=c/λc√(ε∞c) is directly related to the London penetration depth along the c-axis, λc, and is thus a fundamental probe of the superconducting state and an excellent tool to study these highly anisotropic systems. ε∞c is the high frequency dielectric constant along the c-axis. For T蠐Tc, the temperature dependence of λc is related to the symmetry of the order parameter. For T close to T. the appearance of the JPR probes the onset of interlayer phase coherence. Furthermore, the JPR spectral width is a measure of the quasiparticle scattering rate. In a magnetic field, the JPR probes the correlation of pancake vortices along the c-axis and is a tool to study the B-T phase diagram. The JPR of high-Tc superconductors with extreme anisotropy such as the bismuth, thallium, and mercury based high-Tc superconductors lies in the far-infrared and is thus amenable to study using terahertz time-domain spectroscopy (THz-TDS). We have measured the JPR in Tl2Ba2CaCu2O8 superconducting thin films employing THz-TDS in transmission.
UR - https://www.scopus.com/pages/publications/84958238921
U2 - 10.1109/QELS.2001.962013
DO - 10.1109/QELS.2001.962013
M3 - Conference contribution
T3 - Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001
BT - Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001
PB - Unknown Publisher
T2 - 2001 Conference on Lasers and Electro-Optics, CLEO 2001
Y2 - 1 January 2001
ER -