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62 papers · 1 filter
Strength of the Spin-Fluctuation-Mediated Pairing Interaction in a High-Temperature Superconductor
T. Dahm, V. Hinkov, S. V. Borisenko +7
Theories based on the coupling between spin fluctuations and fermionic quasiparticles are among the leading contenders to explain the origin of high-temperature superconductivity,…
Domain structure of epitaxial Co films with perpendicular anisotropy
Jens Brandenburg, Ruben Hühne, Volker Neu +1
Epitaxial hcp Cobalt films with pronounced c-axis texture have been prepared by pulsed lased deposition (PLD) either directly onto Al2O3 (0001) single crystal substrates or with an…
Jahn-Teller like origin of the tetragonal distortion in disordered Fe-Pd magnetic shape memory alloys
Ingo Opahle, Klaus Koepernik, Ulrike Nitzsche +1
The electronic structure and magnetic properties of disordered FePd alloys are investigated in the framework of density functional theory using the…
Conventional Superconductivity in Fe-Based Pnictides: the Relevance of Intra-Band Electron-Boson Scattering
M. L. Kulic, S. -L. Drechsler, O. V. Dolgov
Various recent experimental data and especially the large Fe-isotope effect point against unconventional pairings, since the large intra-band impurity scattering is strongly pair-b…
Thermodynamics of the frustrated ferromagnetic spin-1/2 Heisenberg chain
J. Richter, M. Härtel, D. Ihle +1
We studied the thermodynamics of the one-dimensional J1-J2 spin-1/2 Heisenberg chain for ferromagnetic nearest-neighbor bonds J1 < 0 and frustrating antiferromagnetic next-nearest-…
Dynamics in two-leg spin ladder with a four-spin cyclic interaction
S. Nishimoto, M. Arikawa
We study two-leg Heisenberg ladder with four-spin cyclic interaction using the (dynamical) density-matrix renormalization group method. We demonstrate the dependence of the low-lyi…