We study thermoelectric effects in superconducting nanobridges and demonstrate that the magnitude of these effects can be comparable or even larger than that for a macroscopic circuit. It is shown that a large gradient of the electron temperature can be realistically created on a nanoscale and...

Measurements of the electrical resistivity as a function of temperature, ρ(T), for different values of applied magnetic field, B<Subscript>a</Subscript> (0 ≤ B<Subscript>a</Subscript> ≤ 50 mT), were performed in polycrystalline samples of Bi<Subscript>1.65</Subscript>Pb<Subscript>0.35</Subscript>Sr<Subscript>2</ Subscript>Ca<Subscript>2</Subscript> Cu<Subscript>3</Subscript>O<Subscript>10+δ</Subscript> subjected to different uniaxial compacting pressure (UCP). We...</subscript></subscript></subscript><//></subscript></subscript></subscript></subscript></subscript>

We propose a new approach of smearing origins of a zero-bias conductance peak (ZBCP) in high-T<Subscript>c</Subscript> superconductor tunnel junctions through the analysis based on the circuit theory for a d-wave pairing symmetry. The circuit theory has been recently developed from conventional superconductors to...</subscript>

We review the use of superconductors as a playground for the experimental study of front roughening and avalanches. Using the magneto-optical technique, the spatial distribution of the vortex density in the sample is monitored as a function of time. The roughness and growth exponents...

Ho<Subscript>0.1</Subscript>Ca<Subscript>0.9</Subscript>MnO<Subscript>3</S ubscript> is a canted antiferromagnet with the magnetic space group Pn′ma′. The magnetic structure is a superposition C<Subscript> x </Subscript>F<Subscript> y </Subscript>A<Subscript> z </Subscript> of the three types of order allowed in Pn′ma′. In the Ca-rich corner of the system Ho<Subscript>1−x </Subscript>Ca<Subscript> x </Subscript>MnO<Subscript>3</Subscript> the title compound has a strong magnetoelastic...</subscript></subscript></subscript></subscript></subscript></subscript><//s></subscript></subscript></subscript>

We study the one-dimensional Holstein model of spinless fermions interacting with dispersion-less phonons by using a recently developed projector-based renormalization method (PRM). At half-filling the system shows a metal-insulator transition to a Peierls distorted state at a critical...

We present a non-perturbative study of an extended Falicov-Kimball model in one dimension. Working within the binary alloy interpretation, we include the spin of the itinerant electrons and a Hubbard interaction to model the inter-electron correlations. We derive an effective Ising model for the...