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Bulk-Like Magnetic Signature of Individual FeH Molecular Magnets on Graphene.
ACS Nano
January 2019
Department of Physics , University of Konstanz, 78457 Konstanz , Germany.
Single-molecule magnets (SMMs) incorporate key properties that make them promising candidates for the emerging field of spintronics. The challenge to realize ordered SMM arrangements on surfaces and at the same time to preserve the magnetic properties upon interaction with the environment is a crucial point on the way to applications. Here we employ inelastic electron tunneling spectroscopy (IETS) to address the magnetic properties in single Fe complexes that are adsorbed in a highly ordered arrangement on graphene/Ir(111).
View Article and Find Full Text PDFHybridization gap and Fano resonance in SmB6.
Proc Natl Acad Sci U S A
April 2014
Max-Planck-Institut für Chemische Physik fester Stoffe, 01187 Dresden, Germany.
Hybridization between conduction electrons and the strongly interacting f-electrons in rare earth or actinide compounds may result in new states of matter. Depending on the exact location of the concomitant hybridization gap with respect to the Fermi energy, a heavy fermion or an insulating ground state ensues. To study this entanglement locally, we conducted scanning tunneling microscopy and spectroscopy (STS) measurements on the "Kondo insulator" SmB6.
View Article and Find Full Text PDFFrequency-domain Fourier-transform terahertz spectroscopy of the single-molecule magnet (NEt4)[Mn2(5-Brsalen)2(MeOH)2Cr(CN)6].
Chemistry
June 2011
Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany.
We have investigated the novel single-molecule magnet (NEt(4))[Mn(2)(5-Brsalen)(2)(MeOH)(2)Cr(CN)(6)] (1; 5-Brsalen = N,N'-ethylenebis(5-bromosalicylidene)iminato anion) using spectroscopic as well as magnetization and susceptibility measurements. Frequency-domain Fourier-transform terahertz electron paramagnetic resonance (FDFT THz-EPR) based on the generation of THz radiation from a synchrotron in combination with inelastic neutron scattering (INS) allows for the discrimination between intermultiplet and intramultiplet transitions. Together with ac/dc magnetic susceptibility measurements the obtained set of data provides a complete characterization of the lowest energetic magnetic excitations.
View Article and Find Full Text PDFLow temperature EPR spectra of the mesoscopic cluster V15: the role of antisymmetric exchange.
J Chem Phys
August 2006
Department of Chemistry, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel.
The low temperature EPR spectra of the unique nanometer-scale molecular magnet V(15) are analyzed within the three-spin model preserving trigonal symmetry. The Hamiltonian includes isotropic and antisymmetric (AS) exchange interactions introduced by Dzyaloshinsky (Zh. Eksp.
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