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 …

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

We report the discovery of bulk superconductivity (SC) at 6.1 K in a quasi-one-dimensional
chromium pnictide K 2 Cr 3 As 3 that contains [(Cr 3 As 3) 2−]∞ double-walled …

This is a revised version of the first edition published in 1991. At the same time, this is a
revised version of the Syokabo edition, which was written in Japanese and published in …

The term bronze, originally coined for NaxW03 com-pounds by Wohler in 1825, 1 is now
applied to a variety of crystalline phases of the transition metal oxides; these are usually …

Following the discovery of superconductivity in quasi-one-dimensional K 2 Cr 3 As 3
containing [(Cr 3 As 3) 2−]∞ chains (JK Bao, arxiv: 1412.0067), we succeeded in …

When charge carriers are spatially confined to one dimension, conventional Fermi-liquid
theory breaks down. In such Tomonaga–Luttinger liquids, quasiparticles are replaced by …

The history of low dimensional conductors goes back to the prediction, more than forty years
ago, by Peierls, of the instability of a one dimensional metallic chain, leading to what is …

We construct minimum effective models to investigate the pairing symmetry in the newly
discovered quasi-one-dimensional superconductor K 2 Cr 3 As 3. We show that a minimum …

The recent discovery of superconductivity in the quasi-one-dimensional compound K 2 Cr 3
As 3, which consists of double-walled tubes of [(Cr 3 As 3) 2−]∞ that run along the c axis …