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Pressure dependence of the magnetization of URu2Si2
C. Pfleiderer, J. A. Mydosh, M. Vojta
The ground state of URu2Si2 changes from so-called hidden order (HO) to large-moment antiferromagnetism (LMAF) upon applying hydrostatic pressure in excess of 14 kbar. We report th…
A mean-field theory for strongly disordered non-frustrated antiferromagnets
Heidrun Weber, Matthias Vojta
Motivated by impurity-induced magnetic ordering phenomena in spin-gap materials like TlCuCl3, we develop a mean-field theory for strongly disordered antiferromagnets, designed to c…
Fermi-liquid instabilities at magnetic quantum phase transitions
Hilbert v. Löhneysen, Achim Rosch, Matthias Vojta +1
This review discusses instabilities of the Fermi-liquid state of conduction electrons in metals with particular emphasis on magnetic quantum critical points. Both the existing theo…
Universal crossovers and critical dynamics of quantum phase transitions: A renormalization group study of the pseudogap Kondo problem
Lars Fritz, Serge Florens, Matthias Vojta
The pseudogap Kondo problem, describing a magnetic impurity embedded in an electronic environment with a power-law density of states, displays continuous quantum phase transitions…
Strongly Inhomogeneous Phases and Non-Fermi Liquid Behavior in Randomly Depleted Kondo Lattices
Ribhu K. Kaul, Matthias Vojta
We investigate the low-temperature behavior of Kondo lattices upon random depletion of the local -moments, by using strong-coupling arguments and solving SU() saddle-point eq…