Phenomenological Transport Equation for the Cuprate Metals

Phenomenological theory of cuprate superconductivity

TRANSPORT EQUATION WITH FUZZY DATA

In this paper, we use the generalized differentiability concept tostudy the fuzzy transport equation. We consider transport equationin the homogeneous and non-homogeneous cases with fuzzy initialcondition. We also present the solution when speed parameter is a fuzzynumber. Our method is based on the construction of the solutionsby employing Zadeh's extension principle.

Internal variables and phenomenological models for metals plasticity

2014 This paper aims towards a presentation of the general structure of the phenomenological models presently used for the macroscopic description of metal plasticity and a discussion of their interaction with microstructural investigation. Attention is concentrated on internal variables modelization which, from the very beginning, must include some ideas about the microstructural material stat...

Spin-polarized quasiparticle transport in cuprate superconductors

The effects of spin-polarized quasiparticle transport in superconducting YBa2Cu3O7−δ (YBCO) epitaxial films are investigated by means of current injection into perovskite ferromagnet-insulatorsuperconductor (F-I-S) heterostructures. These effects are compared with the injection of simple quasiparticles into control samples of perovskite non-magnetic metal-insulator-superconductor (N-IS). System...

Phenomenological theory of the protected nodes and collapse of the Fermi arcs in underdoped cuprate superconductors

We show how recent angle resolved photoemission measurements addressing the Fermi arcs in the cuprates reveal a very natural phenomenological description of the complex superfluid phase. Importantly, this phenomenology is consistent with a previously presented microscopic theory. By distinguishing the order parameter and the excitation gap, we are able to demonstrate how the collapse of the arc...