Probing frustrated metallo-molecular spin Kondo lattice interfaces through anomalous Nernst effect

Servet Ozdemir; Matthew Rogers; Conor J. McCluskey; Raymond G. McQuaid; Zachariah Parkin; Mannan Ali; Gavin Burnell; Joseph Barker; B J Hickey; Oscar Cespedes

arXiv · 2510.04824

Probing frustrated metallo-molecular spin Kondo lattice interfaces through anomalous Nernst effect

Servet Ozdemir·Matthew Rogers·Conor J. McCluskey·Raymond G. McQuaid·Zachariah Parkin·Mannan Ali·Gavin Burnell·Joseph Barker·B J Hickey·Oscar Cespedes

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Abstract

Frustrated Kondo spin lattice (KSL) systems away from the antiferromagnetic (AFM) ground state have been found to display strange metal behaviour. A signature of strange metals in correlated systems is large Nernst response. Metallo-molecular interfaces of supramolecular lattices have been demonstrated as 2D KSL systems in STM studies. Here going beyond STM experiments we report a frustrated AFM state on molecular interfaces of Pt(111) and Pt(111)/Co films with around room temperature spin freezing transitions. Near these transitions we measure an anomalous Nernst coefficient of at least 3 $\mu$V/K.

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Servet Ozdemir, Matthew Rogers, Conor J. McCluskey, Raymond G. McQuaid, Zachariah Parkin, Mannan Ali, Gavin Burnell, Joseph Barker, B J Hickey, Oscar Cespedes. 2025-10-06. Probing frustrated metallo-molecular spin Kondo lattice interfaces through anomalous Nernst effect. https://arxiv.org/abs/2510.04824

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