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DFG Research Unit 1154 "Towards Molecular Spintronics"
Projects

DFG Research Unit 1154 „Towards Molecular Spintronics“

Projects:

Project Partners Institution
SP1
  • Part I: Thin films of redox-active high-spin molecules
  • Part II: Monolayers of redox-active high-spin molecules on conducting and ferromagnetic metals: Control of selfassembly and integration into devices
Kersting UL
SP2
  • Part I:Preparation of spin coated thin films and self-assembled monolayers of magnetic transition metal complexes
  • Part II: From the preparation of monomolecular layers to thin films of magnetic transition metal complexes towards their integration into spintronic devices
Rüffer, Lang TUC
SP3
  • Part I + II: Electronic structure, transport, and collective effects in molecular layered systems
Kortus,
Timm
TUF,
TUD
SP4
  • Part I + II: Electron spin resonance and magnetic studies
Kataev,
Klingeler,
Büchner
IFW,
UH
IFW/TUD
SP5
  • Part I: Spin dynamics in single molecules and thin films studied by nuclear probe spectroscopy
Klauss TUD
SP6
  • Part I + II: Scanning tunneling microscopy and spectroscopy of magnetic molecules
Hess,
Hietschold
IFW,
TUC
SP7
  • Part I: Spectroscopic studies of magnetic molecular materials
  • Part II: Spectroscopic studies of magnetic molecular materials and their interfaces
Knupfer,
Zahn
IFW,
TUC
SP8
  • Part I + II:From the preparation of molecular layers and their (magneto-)optical investigation towards laterally stacked devices
Salvan, Zahn, Hiller TUC
SP9
  • Part I: Transport through spin polarized semiconductor/molecule/semiconductor tunnel junctions
  • Part II: Vertical magneto-resistive devices made from hybrid metal/molecules/metal multi-layer systems
Schmidt,
Hess
IFW/TUC
IFW

 

SP1. | SP2. | SP3. | SP4. | SP5. | SP6. | SP7. | SP8. | SP9. | [close]

SP4: Electron spin resonance and magnetic studies

This project is dedicated to investigations of magnetic properties of magnetic molecular complexes, of molecular thin films and interfaces and eventually of spin electronic devices. For this purpose, tunable high-frequency high-field electron spin resonance and static magnetization measurement techniques ranging from experiments in high strength static and pulsed magnetic fields to studies employing micromagnetic sensors will be applied. The experiments will provide relevant information about the strength of intramolecular magnetic interactions, the size and the type of magnetic anisotropy, the spectrum of low-energy magnetic excitations and relaxation phenomena. By these means relationships between chemical structure, bonding topology and magnetism will be established, thus enabling to chemically engineer molecular complexes with predetermined magnetic properties. In addition, our experimental techniques will be extended towards strongly improved sensitivity, very small samples and the investigations of the magnetization under applied microwave irradiation, i.e. under precise control over the spin excitations. On the long term, the latter setup will be used for electrical studies on magnetic molecular spin electronic devices upon tuning/ switching their magnetic states. The project has strong links to other projects of the research unit. Specifically, we shall thoroughly characterize new magnetically active compounds which will be synthesized in the framework of the chemistry projects SP1, SP2 and external collaborations. The experimental results will be analyzed in a close cooperation with the theory project SP3. These studies will provide new and complementary information of high relevance to projects SP5, SP7, and SP8, and ensure an optimal selection of materials for the manufacturing of devices in the project SP9.