Disorder-driven quantum phase transitions in superconductors and magnets.

摘要: We develop an analytical theory, based on the quantum cavity method, describing phase transitions in low-temperature, strongly disordered ferromagnets and superconductors. At variance with usual critical points, we find a diagram two points separating three phases. When disorder increases, systems goes from ordered to intermediate characterized by activated transport then second where no is possible. Both phases exhibit strong inhomogeneity of their basic properties typical glassy physics.