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 …

NATURE abounds with phase transitions. The boiling and freezing of water are everyday
examples of phase transitions, as are more exotic processes such as superconductivity and …

These lecture notes introduce quantum spin systems and several computational methods for
studying their ground‐state and finite‐temperature properties. Symmetry‐breaking and …

We use series expansion methods to calculate the dispersion relation of the one-magnon
excitations for the spin-1 2 triangular-lattice nearest-neighbor Heisenberg antiferromagnet …

Measurements are reported of the magnetic field dependence of excitations in the quantum
critical state of the spin S= 1/2 linear chain Heisenberg antiferromagnet copper pyrazine …

We report measurements of the specific heat and the thermal conductivity of the model
Heisenberg spin-1/2 chain cuprate Sr 2 CuO 3 at low temperatures. In addition to a nearly …

In view of the continuous theoretical efforts aimed at an accurate microscopic description of
the strongly correlated transition metal oxides and related materials, we show that with …

Abstract Comprehensive 6 3, 6 5 Cu NMR/NQR measurements have been performed on
single crystals of Sr 14 Cu 24 O 41, a hole-doped material containing alternating layers of …

Multipartite entanglement refers to the simultaneous entanglement between multiple
subsystems of a many-body quantum system. While multipartite entanglement can be …

We used 17 O NMR to probe the uniform (wave vector q= 0) electron spin excitations up to
800 K in Sr 2 CuO 3 and separate the q= 0 from the q=±π a staggered components. Our …