Unique phase diagram with narrow superconducting dome in EuFe2(As1−xPx)2due to Eu2+local magnetic moments

Phase competition in trisected superconducting dome.

A detailed phenomenology of low energy excitations is a crucial starting point for microscopic understanding of complex materials, such as the cuprate high-temperature superconductors. Because of its unique momentum-space discrimination, angle-resolved photoemission spectroscopy (ARPES) is ideally suited for this task in the cuprates, where emergent phases, particularly superconductivity and th...

Magnetic phase diagram of small superconducting two-loop networks

2014 The critical magnetic behaviour of simple superconducting micro-networks is illustrated by discussing several two-loop systems in the form of Wheatstone bridges. Using the formalism of de Gennes and Alexander it is shown how phase boundaries are obtained. These show undulating behaviour for sufficiently symmetric loop systems, analogous to that of a simple loop. A physical interpretation i...

Thermodynamics of the UPt3 superconducting phase diagram.

The Superconducting Phase Diagram of Li Metal to 67 Gpa

The dependence of the superconducting transition temperature T c on nearly hydrostatic pressure has been determined to 67 GPa in an ac susceptibility measurement for a Li sample embedded in helium pressure medium. With increasing pressure, superconductivity appears at 5.47 K for 20.3 GPa, T c rising rapidly to ∼ 14 K at 30 GPa. The T c (P)-dependence to 67 GPa differs significantly from that ob...

Quantum phase slip phenomenon in ultra-narrow superconducting nanorings

The smaller the system, typically - the higher is the impact of fluctuations. In narrow superconducting wires sufficiently close to the critical temperature T(c) thermal fluctuations are responsible for the experimentally observable finite resistance. Quite recently it became possible to fabricate sub-10 nm superconducting structures, where the finite resistivity was reported within the whole r...