2003/09/01 by Efrain J. Ferrer, Ferrer, Efrain J., Vivian de la Incera +1
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #Superconductivity (cond-mat.supr-con) #Superconductivity in MgB2 and Alloys #cond-mat.supr-con #hep-ph
paper · pdf · doi:10.48550/arxiv.cond-mat/0309046
arxiv created 2003/09/01 · openalex publication_date 2003/09/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A phenomenological model that considers different secondary idxy gap amplitudes and quasiparticle effective charges for each nodal direction, is proposed to explain the observed anisotropic node removal by a magnetic field in high-Tc cuprates. Two independent parity-breaking condensates develop, implying the induction of a magnetic moment per each nodal direction. The model outcomes are in agreement with the experimentally found relation Δi∼√(B). The secondary gap vanishes through a second-order phase transition at a critical temperature whose value for underdoped nodal-oriented YBCO is estimated to be ∼ 6K for a field of 15 T.