arXiv subjects

C. D. Vaccarella

Publications and source records attributed to C. D. Vaccarella.

3 recordsLinked to original sources

arXiv2003

Josephson Effect Between Triplet Superconductors: A Self-Test for the Order Parameter Symmetry of Bechgaard Salts

We show that the Josephson effect between triplet superconductors is sensitive to the relative orientation of the d-vectors across the junction. In addition, we point out that the temperature and angular dependence of the Josephson effect can help distinguish between different order parameter symmetries. We discuss coherent and incoherent tunneling processes, and the role of surface bound states within the framework of non-local lattice Bogoliubov-deGennes equations.

cond-mat.supr-con↗

arXiv2001

Order parameter of quasi-one-dimensional superconductors: symmetry features in quasiparticle density of states and spin susceptibility

Recent experiments indicate that the Bechgaard salts (TMTSF)$_2$ ClO$_4$ and (TMTSF)$_2$ PF$_6$ may be unconventional triplet superconductors. The quasiparticle density of states and the uniform spin susceptibility tensor are computed at low temperatures for order parameter symmetries, as an attempt to narrow the number of possibilities based on experimental evidence.

cond-mat.supr-con↗

arXiv2000

Phase Fluctuations and Vortex Lattice Melting in Triplet Quasi-One-Dimensional Superconductors at High Magnetic Fields

Assuming that the order parameter corresponds to an equal spin triplet pairing symmetry state, we calculate the effect of phase fluctuations in quasi-one-dimensional superconductors at high magnetic fields applied along the y (b') axis. We show that phase fluctuations can destroy the theoretically predicted triplet reentrant superconducting state, and that they are responsible for melting the magnetic field induced Josephson vortex lattice above a magnetic field dependent melting temperature Tm.

cond-mat.supr-con↗