745 citations · 4.7k across the 155 of their papers we have counts for
6 papers · 1 filter
Quantum phase transitions
Thomas Vojta
Phase transitions which occur at zero temperature when some non-thermal parameter like pressure, chemical composition or magnetic field is changed are called quantum phase transiti…
The quantum phase transition of itinerant helimagnets
Thomas Vojta, Rastko Sknepnek
We investigate the quantum phase transition of itinerant electrons from a paramagnet to a state which displays long-period helical structures due to a Dzyaloshinskii instability of…
Disorder and Two-Particle Interaction in Low-Dimensional Quantum Systems
Rudolf A. Roemer, Michael Schreiber, Thomas Vojta
We review some of the recent results on two-interacting particles (TIP) in low-dimensional disordered quantum models. Special attention is given to the mapping of the problem onto…
Transport Anomalies and Marginal Fermi-Liquid Effects at a Quantum Critical Point
D. Belitz, T. R. Kirkpatrick, R. Narayanan +1
The conductivity and the tunneling density of states of disordered itinerant electrons in the vicinity of a ferromagnetic transition at low temperature are discussed. Critical fluc…
The effect of rare regions on a disordered itinerant quantum antiferromagnet with cubic anisotropy
Rajesh Narayanan, Thomas Vojta
We study the quantum phase transition of an itinerant antiferromagnet with cubic anisotropy in the presence of quenched disorder, paying particular attention to the locally ordered…
From localization to delocalization in the quantum Coulomb glass
Thomas Vojta, Frank Epperlein, Svetlana Kilina +1
We numerically investigate how electron-electron interactions influence the transport properties of disordered electrons in two dimensions. Our study is based on the quantum Coulom…