Laboratory for Molecular Magnetic Nanomaterials

• We have synthesized and closely studied six-coordinated high spin Co(II) ion complex, showing qualities single ion magnets. On the basis of this research we have determined main relaxation mechanisms responsible for single ion magnetic qualities of those systems and developed criteria of rational design of single ion magnets with improved characteristics.
• We have found a correlation between the close coordination environment of cobalt ions and duration of spin-lattice relaxation. This result contributes significantly to development of a region of single molecule magnetism and bring us closer to creating functional magnetic nanomaterials based on nanomolecular magnets.
• Our researchers have reliably shown that mixed valence molecular system display magnetoelectric effect and therefore such systems are single molecule analogues of multiferroics. We have developed electron and vibron models of such system. In particular, we have determined mechanisms of electric field control of antiferromagnetic exchange and quantum entanglement in triferrocene complexes and reduced polyoxometalate as well as electric field control of indirect magnetic interaction between localized spins by a delocalized electron. We have proven the decisive contribution of vibron interaction to increase of efficiency of electric field control.
• We have proven possibility of synthesizing spin switch induced by electric field in trigonal two-electron trimers of mixed valence.
• Our researchers have determined the mechanism of two-stage spin transition in molecular magnetic systems based on molecular crystals containing multinuclear complexes as structural units. These results are important for solving applied tasks of molecular electronics and spintronics, in particular, for creating molecular quantum logical gate and magnetic switches.
• We have developed an effective computational approach to solving multimode dynamic vibron problems rising in molecular multiferroicss and switchable molecular magnetic systems based on complex multinuclear clusters of mixed valence.
• Our Laboratory has created the VIBPACK software package for quantitative computation of energy spectrum of energy spectrum of spin-vibron states as well as magnetic and optical qualities of switchable molecular magnetic systems. After the creation of this software the main problem restricting possibilities of describing qualities of switchable molecular magnetic systems based on mixed valence clusters has been eliminated.

Implemented results of research:

The obtained scientific results are fundamental and bring a significant contribution to creation of molecular electronics, spintronics and quantum computing.

Education and career development:

• We have created the «Basics of Molecular Magnetism» course that has been implemented at the Faculty of Fundamental Physical and Chemical Engineering of the Moscow State University.
• The Laboratory is conducting training of postgraduates and undergraduates.

Collaborations:

University of Valencia (Spain), Ben-Gurion University of the Negev (Israel), Kazan Federal University (Russia): joint scientific research