Twisted van der Waals heterostructures have latterly received prominent attention for their
many remarkable experimental properties and the promise that they hold for realizing …

This is an introductory review of the physics of quantum spin liquid states. Quantum
magnetism is a rapidly evolving field, and recent developments reveal that the ground states …

At the liquid–gas phase transition in water, the density has a discontinuity at atmospheric
pressure; however, the line of these first-order transitions defined by increasing the applied …

During the past few decades, several new classes of superconductors have been
discovered that do not appear to be related to traditional superconductors. The source of the …

In two-dimensional triangular lattices, geometric frustration prohibits the formation of
ordering even at the lowest temperatures, and therefore a liquid-like ground state is …

We review the interplay of frustration and strong electronic correlations in quasi-two-
dimensional organic charge transfer salts, such as (BEDT-TTF) 2 X and Et n Me 4− n Pn [Pd …

Spin current–a flow of electron spins without a charge current–is an ideal information carrier
free from Joule heating for electronic devices. The celebrated spin Hall effect, which arises …

Electron correlation and spin frustration are among the central issues in condensed matter
physics, and their interplay is expected to bring about exotic phases with both charge and …

accepted March 6, 2006; published May 10, 2006) One of the clear manifestations of
electron correlation in condensed matter is metal–insulator (MI) transition. The organic …

The quantum spin-1∕ 2 antiferromagnetic Heisenberg model on a two dimensional
triangular lattice geometry with spatial anisotropy is relevant to describe materials such as …