Condensed Matter, Volume 3, Issue 1

The system of two interacting bosons in a two-dimensional harmonic trap is compared with the system consisting of two noninteracting fermions in the same potential. In particular, we discuss how the properties of the ground state of the system, e.g.,...

The correct detection of the Berezinskii-Kosterlitz-Thouless (BKT) transition in quasi-two-dimensional superconductors still remains a controversial issue. Its main signatures, indeed, are often at odds with the theoretical expectations. In a recent...

Ground-state properties of a few spin- $1/2$ ultra-cold fermions confined in a one-dimensional trap are s...

While it is known that strongly correlated transition metal oxides described by a multi-band Hubbard model show microscopic multiscale phase separation, little is known about the possibility to manipulate them with vacuum ultraviolet (VUV), 27 eV lig...

Since the discovery of cuprates (Cu-oxide superconductors) in 1986 [1–4], layered superconductors have attracted much attention, due to the emergence of high-transition-temperature (high-T_c) and unconventional superconductivity.

We show that resonance phenomena can be treated as nonequilibrium phase transitions. Resonance phenomena, similar to equilibrium phase transitions, are accompanied by some kind of symmetry breaking and can be characterized by order parameters. This i...

Peer review is an essential part in the publication process, ensuring that Condensed Matter maintains high quality standards for its published papers[...]

A method is presented for the systematic derivation of a hierarchy of coupled equations for the computation of two-time correlation functions of operators for open many-body quantum systems. We show how these systems of equations can be closed in mea...

Antimony (Sb) substitution of less than 8% was examined on a single crystal of a layered superconductor NdO_0.7F_0.3BiS₂. The superconducting transition temperature of the substituted samples decreased as Sb concentration increased. A lattice constant...