We present a unified perspective on symmetry protected topological (SPT) phases in one
dimension and address the open question of what characterizes their phase transitions. In …

We use the multiscale entanglement renormalization ansatz (MERA) to numerically
investigate three critical quantum spin chains with Z 2× Z 2 on-site symmetry: a staggered …

Finding the Kitaev spin liquid in candidate materials involves understanding the entire
phase diagram, including other allowed interactions. One of these interactions, called the …

A large number of symmetry-protected topological (SPT) phases have been hypothesized
for strongly interacting spin-1/2 systems in one dimension. Realizing these SPT phases …

We show that the ground-state expectation value of twisting operator is a topological order
parameter for U (1)-and ZN-symmetric symmetry-protected topological (SPT) phases in one …

The spin-orbit generated Γ interaction is known to induce strong frustration and to be
significant in realistic models of materials. To gain an understanding of the possible phases …

Single crystal samples of the frustrated quasi-one-dimensional quantum magnet Rb 2 Cu 2
Mo 3 O 12 are investigated by magnetic, thermodynamic, and electron spin resonance …

The spin-1/2 Heisenberg chain with a ferromagnetic first-neighbor exchange coupling J 1
and an antiferromagnetic second-neighbor J 2 has a Haldane dimer ground state with an …

Rb 2 Cu 2 Mo 3 O 12 is a quasi-one-dimensional frustrated S= 1/2 multiferroic that displays
magnetic field-tunable ferroelectricity with no long-range magnetic order. To interrogate this …

We report experimental and theoretical evidence that Rb 2 Cu 2 Mo 3 O 12 has a
nonmagnetic tetramer ground state of a two-leg ladder comprising antiferromagnetically …