Strongly nonlinear magnetization above T c in Bi 2 Sr 2 CaCu 2 O 8 + δ

XY Ordering in Striped CuO 2 Planes in Underdoped Bi 2 Sr 2 CaCu 2 O 8 + δ

Josephson Plasma Resonance in Solid and Glass Phases of Bi 2 Sr 2 Cacu 2 O 8+δ

Vortex matter phases and phase transitions are investigated by means of Josephson plasma resonance in underdoped Bi2Sr2CaCu2O8+δ single crystals in a microwave frequency range between 19 and 70 GHz. Accompanied by the vortex lattice melting transition, a jump of the interlayer phase coherence extracted from the field dependence of the plasma frequency was observed. In the solid phase, the inter...

Non - quasiparticle microwave absorption in Bi 2 Sr 2 CaCu 2 O 8 + δ 1 S . Sridhar

We show that a non-quasiparticle charge collective mode, in parallel and coincident with the d-wave pair conductivity, leads to a quantitative understanding of microwave surface impedance measurements on superconducting Bi2Sr2CaCu2O8+δ. The analysis suggests an inhomogeneous charge ground state in Bi2Sr2CaCu2O8+δ and other HTS. A complete understanding of the microwave response of high Tc super...

Imaging Quasiparticle Interference in Bi 2 Sr 2 CaCu 2 O 8

to be broadened in the “plateau” region. 27. G. G. Paulus et al., Nature 414, 182 (2001). 28. Note that tiny variations in the peak laser intensity can make the harmonic structure more or less pronounced as revealed by spectra c and d in Fig. 3. However, the modulation depth was kept below 25% in all measurements shown in Fig. 5, resulting in negligible fractional satellite energy content. 29. ...

Incommensurate , dispersive , density of states modulations in Bi 2 Sr 2 CaCu 2 O 8 þ

Scanning tunneling spectroscopy of Bi2Sr2CaCu2O8þd reveals weak, incommensurate, spatial modulations in the tunneling conductance. When images of these energy-dependent modulations are Fourier analyzed the dispersion of their wave vectors can be determined. Comparison of the dispersions with angle-resolved photoemission indicates that quasiparticle interference, due to elastic scattering betwee...