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 μV/K.
@article{arxiv.2510.04824,
title = {Probing frustrated metallo-molecular spin Kondo lattice interfaces through anomalous Nernst effect},
author = {Servet Ozdemir and Matthew Rogers and Conor J. McCluskey and Raymond G. McQuaid and Zachariah Parkin and Mannan Ali and Gavin Burnell and Joseph Barker and B J Hickey and Oscar Cespedes},
journal= {arXiv preprint arXiv:2510.04824},
year = {2026}
}