Angle Dependence of the Transverse Thermal Conductivity in YBa2Cu3O7 Single Crystals: Doppler Shift and Andreev Scattering Contributions
R. Ocaña, P. Esquinazi
DOI 10.1103/PhysRevLett.87.167006 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We have measured the transverse thermal conductivity κxy of twinned and untwinned YBa2Cu3O7 single crystals as a function of angle θ between the magnetic field applied parallel to the CuO2 planes and the heat current direction. For both crystals we observed a clear twofold variation in the field-angle dependence of κxy(θ)=−κxy0(T,B)sin(2θ). We have found that the oscillation amplitude κxy0 depends on temperature and magnetic field. Our results show that κxy0=aBln(1/bB) with the temperature- and sample-dependent parameters a and b. We discuss our results in terms of Andreev scattering of quasiparticles by vortices and a recently proposed theory based on the Doppler shift in the quasiparticle spectrum.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93.4 | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88 | Pressure not reported | unknown |
Similar papers
Quasi-two-dimensional phase fluctuations in bulk superconducting YBa2Cu3O7 single crystals
similarity 0.94N.-C. Yeh & C. C. Tsuei
Source status unknown — claims are unverified
Superconducting fluctuations in the microwave conductivity of YBa2Cu3O7−δ single crystals
similarity 0.94I. Ukrainczyk & A. Dulčić
Source status unknown — claims are unverified
Evidence for Large Static and Dynamic Distortions in High Tc Superconducting YBa2Cu3O7−δ Crystals over a Wide Temperature Range
similarity 0.94R. P. Sharma et al.
Source status unknown — claims are unverified
Superconducting gap symmetries in YBa2Cu3O7−δ compatible with electronic Raman efficiencies and the local-density-approximation band structure
similarity 0.94Matthias Krantz
Source status unknown — claims are unverified
Implications of crystal-field and intra-atomic interactions for the electronic structure of high-Tc superconductors
similarity 0.94Frank J. Adrian
Source status unknown — claims are unverified
Anisotropic Origin of the Bending Instability of the Flux-Antiflux Interface in Type-II Superconductors
similarity 0.94L. M. Fisher et al.
Source status unknown — claims are unverified