Quantum entanglement in heterometallic wheels*
Dipartimento di Scienze Fisiche, Informatiche e Matematiche,
Università di Modena e Reggio Emilia, 41125
2 S3 Istituto Nanoscienze-CNR, 41125 Modena, Italy
Received: 24 July 2012
Published online: 25 February 2013
Molecular nanomagnets are widely engineerable, low-dimensional spin systems, and typically exhibit strongly correlated ground states. This makes them an ideal playground for investigating quantum entanglement. Here, we present a theoretical investigation of entanglement in a relevant class of nanomagntes, namely the Cr-based wheels. We use exchange energy as a simple means for detecting spin-pair and multi-spin entanglement, and derive the temperature range where such correlations are present in the equilibrium state of the molecules.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013