The Valence Bond Glass phase

Abstract

We show that a new glassy phase can emerge in presence of strong magnetic frustration and quantum fluctuations. It is a Valence Bond Glass. We study its properties solving the Hubbard-Heisenberg model on a Bethe lattice within the large $N$ limit introduced by Affleck and Marston. We work out the phase diagram that contains Fermi liquid, dimer and valence bond glass phases. This new glassy phase has no electronic or spin gap (although a pseudo-gap is observed), it is characterized by long-range critical valence bond correlations and is not related to any magnetic ordering. As a consequence it is quite different from both valence bond crystals and spin glasses.

References in corpus (2)

• An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates
• From high temperature supercondutivity to quantum spin liquid: progress in strong correlation physics

Cited by in corpus (4)

• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• On the path integral representation for quantum spin models and its application to the quantum cavity method and to Monte Carlo simulations
• Theory of the superglass phase
• Valence bond glass -- A unified theory of electronic disorder and pseudogap phenomena in high temperature superconductors