Room temperature anisotropy with linear chain of magnetic clusters

Finite magnetic clusters and molecular magnets are among important class of systems that are being explored for next generation quantum technology. One of the major obstacles in realizing magnetic molecule-based quantum devices such as magnetic memory device, qubits for quantum information processing, is that their magnetic properties can be stabilized only at very low temperatures. In attempt to break the low temperature barrier we have considered a linear chain of Co5 clusters with each cluster sandwiched between two benzene rings. Using first-principles density functional theory we have investigated the anisotropic properties of the linear chains with various length. Our calculations show that with a modest length of only 6 nm, the anisotropy approaches to about 290 Kelvin. In this talk we will present the details of our findings.