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PIRSA:17060051

Numerical linked cluster spectroscopy of quantum spin ice

APA

Singh, R. (2017). Numerical linked cluster spectroscopy of quantum spin ice. Perimeter Institute for Theoretical Physics. https://pirsa.org/17060051

Talk numberPIRSA:17060051
Talk Type Conference

Abstract

Numerical Linked Cluster (NLC) expansions can accurately compute thermal properties of quantum spin models in the thermodynamic limit in certain parameter regimes. In classical spin-ice models, where all correlations remain short-ranged down to T=0, these expansions can be convergent even at low T. However, for quantum spin-ice models, they converge only when either temperatures are not too small or there is a strong magnetic field present. To turn these studies into a spectroscopy of exchange parameters, when multiple exchange constants are relevant, is a challenge both because of the limited temperature-range of validity of effective spin-half models and difficulties in isolating magnetic properties in experiments at intermediate and high temperatures. We discuss ways in which such a spectroscopy can proceed.