ChemInform Abstract: Strong‐Disorder Magnetic Quantum Phase Transitions: Status and New Developments

R. Bulla, Matthias Vojta C

Abstract For Abstract see ChemInform Abstract in Full Text.

Omid Nohadani

R. Bulla, Matthias Vojta C

Markus Greiner, Olaf Mandel, Tilman Esslinger +2 more

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Bruce Normand, Mike E. Zhitomirsky

L. B. Ioffe, Marc Mézard

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