Quantum spin dynamics

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Quantum spin coherence in halogen-modified Cr$_7$Ni molecular nanomagnets

(2014)

Authors:

Danielle Kaminski, Amy L Webber, Christopher J Wedge, Junjie Liu, Grigore A Timco, Inigo J Vitorica-Yrezabal, Eric JL McInnes, Richard EP Winpenny, Arzhang Ardavan

Synthesis, structure and magnetism of the mixed-valent phosphonate cage, [MnIIMnIII12(渭4-O) 6(渭-翱贬)6(O3P-t-Bu)10(OH 2)2(DMF)4闭路摆2惭别翱贬路4顿惭贵闭

Polyhedron 72 (2014) 35-42

Authors:

V Chandrasekhar, J Goura, K Gopal, J Liu, P Goddard

Abstract:

The reaction of MnCl2路4H2O with t-BuPO 3H2 in the presence of triethylamine afforded the tridecanuclear cage, [MnIIMnIII12(渭 4-O)6(渭-翱贬)6(O3P-t-Bu) 10(OH2)2(DMF)4] 路[2MeOH路4DMF] (1). The structural analysis of 1 reveals that it is a mixed-valent complex containing a [MnIIMnIII12(渭4-O)6] core. The centre of the core is occupied by a MnII ion which is surrounded by 12 MnIII ions. The latter are connected to each other by six 渭-OH- and 10 t-BuPO32- ligands. The vacant coordination sites of six MnIII ions situated in the periphery are occupied by four DMF and two water molecules. Magnetic studies on 1 reveal a frequency-dependent response which is characteristic of single-molecule magnets. 漏 2014 Elsevier Ltd. All rights reserved.

Coherent electron spin manipulation in a dilute oriented ensemble of molecular nanomagnets: pulsed EPR on doped single crystals.

Chem Commun (Camb) 50:1 (2014) 91-93

Authors:

Fabrizio Moro, Danielle Kaminski, Floriana Tuna, George FS Whitehead, Grigore A Timco, David Collison, Richard EP Winpenny, Arzhang Ardavan, Eric JL McInnes

Abstract:

Doping a Cr7Zn molecular nanomagnet into a diamagnetic and isostructural host allows pulsed X-band EPR on single crystals, including relaxation and nutation experiments on the S = 3/2 ground state.

A Microscopic and Spectroscopic View of Quantum Tunneling of Magnetization

Chapter in Molecular Magnets, Springer Nature (2014) 77-110

Authors:

Junjie Liu, Enrique del Barco, Stephen Hill

Superconducting fluctuations in organic molecular metals enhanced by Mott criticality

(2013)

Authors:

M Nam, C Meziere, B Batail, A Ardavan