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- Max Planck Institute for Intelligent SystemsDE158 papers
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12 papers · 2 filters
Impurity susceptibility and the fate of spin-flop transitions in lightly-doped La(2)CuO(4)
M. B. Silva Neto, L. Benfatto
We investigate the occurrence of a two-step spin-flop transition and spin reorientation when a longitudinal magnetic field is applied to lightly hole-doped La(2)CuO(4). We find tha…
Uniform and staggered magnetizations induced by Dzyaloshinskii-Moriya interactions in isolated and coupled spin 1/2 dimers in a magnetic field
S. Miyahara, J. -B. Fouet, S. R. Manmana +5
We investigate the interplay of Dzyaloshinskii-Moriya interactions and an external field in spin 1/2 dimers. For isolated dimers and at low field, we derive simple expressions for…
Anomalous Lattice Response at the Mott Transition in a Quasi-2D Organic Conductor
M. de Souza, A. Bruehl, Ch. Strack +3
Discontinuous changes of the lattice parameters at the Mott metal-insulator transition are detected by high-resolution dilatometry on deuterated crystals of the layered organic con…
Competing impurities and reentrant magnetism in La(2-x)Sr(x)Cu(1-z)Zn(z)O(4) revisited. The role of the Dzyaloshinskii-Moriya and XY anisotropies
L. Adamska, M. B. Silva Neto, C. Morais Smith
We study the order-from-disorder transition and reentrant magnetism in La(2-x)Sr(x)Cu(1-z)Zn(z)O(4) within the framework of a long-wavelength nonlinear sigma model that properly in…
Charge Localization due to RKKY Interaction in the Spin Glass AuFe
B. Gorshunov, A. S. Prokhorov, S. Kaiser +11
Measurements of electrodynamic response of of spin glass AuFe films in comparison with pure gold films are performed at frequencies from 0.3 THz (10 cm-1) up to 1000 THz (33000 cm-…
Charge stripe order from antiphase spin spirals in the spin-Fermion model
Marcello B. Silva Neto
We revisit the ground state of the spin-Fermion model within a semiclassical approximation. We demonstrate that antiphase spin spirals, or pi-spirals, whose chirality alternates be…