73 citations · 312 across the 11 of their papers we have counts for
11 papers
Random Field effects in field-driven quantum critical points
Fabrizio Anfuso, Achim Rosch
We investigate the role of disorder for field-driven quantum phase transitions of metallic antiferromagnets. For systems with sufficiently low symmetry, the combination of a unifor…
Spin-spin correlations of the spin-ladder compound (CHN)CuBr measured by magnetostriction and comparison to Quantum Monte Carlo results
Fabrizio Anfuso, Markus Garst, Achim Rosch +4
Magnetostriction and thermal expansion of the spin-ladder compound piperidinium copper bromide (CHN)CuBr are analyzed in detail. We find perfect agreement betwee…
Diverging thermal expansion of the spin-ladder system (CHN)CuBr
T. Lorenz, O. Heyer, M. Garst +4
We present high-resolution measurements of the -axis thermal expansion and magnetostriction of piperidinium copper bromide \hp. The experimental data at low temperatures i…
Universal alternating order around impurities in antiferromagnets
Sebastian Eggert, Olav F. Syljuasen, Fabrizio Anfuso +1
The study of impurities in antiferromagnets is of considerable interest in condensed matter physics. In this paper we address the elementary question of the effect of vacancies on…
Fragility of String Orders
F. Anfuso, A. Rosch
One-dimensional gapped systems are often characterized by a 'hidden' non-local order parameter, the so-called string order. Due to the gap, thermodynamic properties are robust agai…
String order and adiabatic continuity of Haldane chains and band insulators
F. Anfuso, A. Rosch
The ground state of spin-1 Haldane chains is characterized by the so-called string order. We show that the same hidden order is also present in ordinary one-dimensional band insula…