Superconductivity has been discovered recently in infinite-layer nickel-based 112 thin films
R 1− x A x NiO 2 (R= La, Nd, Pr and A= Sr, Ca). They are isostructural to the infinite-layer …

This review is an up-to-date snapshot of the current situation in studies of materials with
competing electron spectrum instabilities, namely Cooper pairing, on the one hand, and …

The concept that superconductivity competes with other orders in cuprate superconductors
has become increasingly apparent, but obtaining direct evidence with bulk-sensitive probes …

Oxygen is a key chemical element and solid state NMR can provide unique insight into the
its local environment. In the last decade there have been significant advances (sensitivity …

NMR and magnetization measurements in Li 2 VOSiO 4 and Li 2 VOGeO 4 are reported.
The analysis of the susceptibility shows that both compounds are two-dimensional S= 1/2 …

In the course of seeking the microscopic mechanism of superconductivity in cuprate high
temperature superconductors, the pseudogap phase—the very abnormal'normal'state on the …

This review deals with the properties of superconductors with competing electron spectrum
instabilities, namely, charge-density waves (CDWs) and spin-density waves (SDWs). The …

Over the past two decades, advances in computational algorithms have revealed a curious
property of the two-dimensional Hubbard model (and related theories) with hole do**: the …

NMR, muon spin rotation (μ SR), magnetization, and specific-heat measurements in Li 2
VOSiO 4 powders and single crystals are reported. Specific-heat and magnetization …

The Hebel-Slichter coherence peak, observed in the spin-lattice relaxation rate 1/T 1 just
below the critical temperature T c, serves as a crucial experimental validation of the Bardeen …