Tilted Spins in Chains of Molecular Switches on Pb(100)

Overview

Journal ACS Nano

Publisher American Chemical Society

Specialty Biotechnology

Date 2024 Sep 14

PMID 39276102

Authors

Marten Treichel

Jenny Moller

Xiangzhi Meng

Florian Gutzeit

Rainer Herges

Richard Berndt

Alexander Weismann

Affiliations

Soon will be listed here.

Abstract

A complex based on a Ni(II) porphyrin exhibiting spin crossover on Ag(111) is studied on Pb(100) by scanning tunneling microscopy at 0.3 K. Strong molecular interactions between the phenyl and pentafluorophenyl moieties lead to the formation of molecular chains and cause a faceting of the substrate surface. The chains are located along double and multiple substrate steps that deviate from high-symmetry directions. Tunneling spectroscopy reveals spin-flip excitations of an = 1 system. Measurements in high magnetic fields are used to identify a tilt of the complex and its hard anisotropy axis with respect to the surface normal. Electron injection into the substrate near the molecular rows induces a transition to a state with larger inelastic cross section, leaving the spin state unchanged.

Citing Articles

Adsorption-Site- and Orientation-Dependent Magnetism of a Molecular Switch on Pb(100).

Banerjee A, Ide N, Lu Y, Berndt R, Weismann A ACS Nano. 2025; 19(7):7231-7238.

PMID: 39951689 PMC: 11867006. DOI: 10.1021/acsnano.4c17183.

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