Spin-Hybrids: A Single-Molecule Approach to Spintronics

Abstract

Molecular spintronics aims at exploiting and controlling spin-dependent transport processes at the molecular level. Achieving this aim requires not only appropriate molecules, molecular structures and preparation procedures. Equally important is the understanding and engineering of the electronic and spin-dependent interactions between different molecular species, molecule and substrate, as well as molecule and electrodes. These interactions may not only determine the spin-dependent functionality of the molecular structures, but also their integrity on the substrate. Likewise, there may be also a modification of the surface properties below and in the vicinity of a molecule. We have investigated several molecules on different metallic surfaces, among them magnetic Nd doubledecker phthalocyanines, a cubane-type {Ni4} complex with single-molecule magnet properties, and a nonmagnetic triazine-based molecule. For NdPc2 molecules adsorbed on a Cu(100) surface, our scanning tunneling microscopy and spectroscopy studies show specific electronic states of the molecule-substrate complex. We find that the electric field between STM tip and sample must be taken into account to properly describe the electronic states associated with the upper Pc ligand.

Ion‐Directed Coordinative Polymerization of Copper(II) Pyridyl‐Alcohol Complexes Through Thiane Functionalities

“…Building upon our previous reports, [21][22][23] we herein assess the propensity of the pyridyl-alcohol-type ligand 4-(pyridin-2-ylmethyl)tetrahydro-2H-thiopyran-4-ol (HL•S, C 11 H 15 NOS) metal-sulfur bonds in the crystal lattice (space group P2 1 /c), 2 (P2 1 /c) features intermolecular Cu-S contacts of 2.3188 (7) Å. The coordination compounds are thermally stable up to ca.…”

“…Building upon our previous reports, we herein assess the propensity of the pyridyl‐alcohol‐type ligand 4‐(pyridin‐2‐ylmethyl)tetrahydro‐2 H ‐thiopyran‐4‐ol (HL · S, C 11 H 15 NOS) comprising a thiane functionality (Figure ) to exploit its potential tridenticity in the formation of coordination complexes with copper. Two new coordination compounds, namely the molecular compound [Cu(HL · S) 2 (NO 3 ) 2 ] ( 1 ) and the coordination polymer [Cu(HL · S)Cl 2 ] n ( 2 ), are supported by this charge‐neutral pyridyl‐alcohol ligand.…”

Magnetic configurations of open-shell molecules on metals: The case of CuPc and CoPc on silver

“…An in-depth understanding of the electronic structure and magnetic properties of surface-adsorbed organic molecules is of direct relevance for and key to molecular spintronics [1][2][3][4][5][6][7][8][9][10][11]. Naturally, the deposition of nonmagnetic, closedshell molecules on magnetic substrates can result in a magnetic polarization of the molecule [12][13][14][15][16][17].…”