Exchange Bias in a Layered Metal–Organic Topological Spin Glass

23 December 2020, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

The discovery of conductive and magnetic two-dimensional (2D) materials is critical for the development of next generation spintronics devices. Coordination chemistry in particular represents a highly versatile, though underutilized, route toward the synthesis of such materials with designer lattices. Here, we report the synthesis of a conductive, layered 2D metal–organic kagome lattice, Mn3(C6S6), using mild solution-phase chemistry. Strong geometric spin frustration in this system mediates spin freezing at low temperatures, which results in glassy magnetic behavior consistent with a geometrically frustrated (topological) spin glass. Notably, the material exhibits a large exchange bias of 1625 Oe, providing the first example of exchange bias in a coordination solid or a topological spin glass. More generally, these results demonstrate the potential utility of geometrically frustrated lattices in the design of new nanoscale spintronic materials.

Keywords

Metal Organic Frameworks (MOFs)
Frustrated magnetism
Spin Glass
conductive MOFs
Magnetic MOFs

Supplementary materials

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