Published in
American Physical Society, Physical Review Letters, 20(94), 2005
DOI: 10.1103/physrevlett.94.207208
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- American Physical Society
- [hdl.handle.net] | PDF
- [arxiv.org] | PDF
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- [arxiv.org] | PDF
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Molecular Engineering of Antiferromagnetic Rings for Quantum Computation
,
Timco G. A,
G. Timco,
R. E. P. Winpenny
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Abstract
The substitution of one metal ion in a Cr-based molecular ring with dominant antiferromagnetic couplings allows the engineering of its level structure and ground-state degeneracy. Here we characterize a Cr7Ni molecular ring by means of low-temperature specific-heat and torque-magnetometry measurements, thus determining the microscopic parameters of the corresponding spin Hamiltonian. The energy spectrum and the suppression of the leakage-inducing S mixing render the Cr7Ni molecule a suitable candidate for the qubit implementation, as further substantiated by our quantum-gate simulations.