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Quantum sensing is a key component of quantum technology, enabling highly sensitive magnetometry. We combined a nickelocene molecule with scanning tunneling microscopy to perform versatile spin sensing of magnetic surfaces, namely of model…

Mesoscale and Nanoscale Physics · Physics 2023-11-27 A. Fétida , O. Bengone , M. Romeo , F. Scheurer , R. Robles , N. Lorente , L. Limot

Ni/Cu(001) is known as a unique system showing the spin-reorientation transition from an in-plane to out-of-plane magnetization direction when the Ni-overlayer thickness is increased. We investigate different relaxed multilayer structures…

Materials Science · Physics 2009-11-10 František Máca , Alexander B. Shick , Josef Redinger , Raimund Podloucky , Peter Weinberger

DC current induced magnetization reversal and magnetization oscillation was observed in 500 nm large size Co90Fe10/Cu/Ni80Fe20 pillars. A perpendicular external field enhanced the coercive field separation between the reference layer…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Linqiang Luo , Mehdi Kabir , Nam Dao , Salinporn Kittiwatanakul , Michael Cyberey , Stuart A. Wolf , Mircea Stan , Jiwei Lu

Spin-bearing molecules can be stabilized on surfaces and in junctions with desirable properties such as a net spin that can be adjusted by external stimuli. Using scanning probes, initial and final spin states can be deduced from…

Mesoscale and Nanoscale Physics · Physics 2016-12-16 Peter Jacobson , Matthias Muenks , Gennadii Laskin , Oleg O. Brovko , Valeri S. Stepanyuk , Markus Ternes , Klaus Kern

Single metallocene molecules act as sensitive spin detectors when decorating the probe of a scanning tunneling microscope (STM). However, the impact of the atomic-scale electrode details on the molecular spin state has remained elusive to…

Mesoscale and Nanoscale Physics · Physics 2024-10-11 Maximilian Kögler , Nicolas Néel , Laurent Limot , Jörg Kröger

Single molecule magnets and single spin centers can be individually addressed when coupled to contacts forming an electrical junction. In order to control and engineer the magnetism of quantum devices, it is necessary to quantify how the…

Mesoscale and Nanoscale Physics · Physics 2015-11-20 Peter Jacobson , Tobias Herden , Matthias Muenks , Gennadii Laskin , Oleg Brovko , Valeri Stepanyuk , Markus Ternes , Klaus Kern

The reversible control of a single spin of an atom or a molecule is of great interest in Kondo physics and a potential application in spin based electronics.Here we demonstrate that the Kondo resonance of manganese phthalocyanine molecules…

Imaging the change in the magnetization vector in real time by spin-polarized low-energy electron microscopy, we observed a hydrogen-induced, reversible spin-reorientation transition in a cobalt bilayer on Ru(0001). Initially, hydrogen…

We report on spin atomistic calculations used to model static and dynamic magnetic properties of inhomogeneous ultrathin iron films. Active magnetic layers in next-generation spintronic devices are becoming so thin that they exhibit some…

We report the emergence of adsorption-induced magnetism from heterohelicene molecules on a non-magnetic Cu(100) surface. Spin-polarized low-energy electron microscopy (SP-LEEM) measurements reveal spin-dependent electron reflectivity for…

We present a novel approach to spin manipulation in atomic-scale nanostructures. Our ab initio calculations clearly demonstrate that it is possible to tune magnetic properties of sub-nanometer structures by adjusting the geometry of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 O. O. Brovko , P. A. Ignatiev , V. S. Stepanyuk , P. Bruno

Molecular magnets are a promising class of materials with exciting properties and applications. However, a profound understanding and application of such materials depends on the accurate detection of their electronic and magnetic…

The ability to electrically-drive spin excitations in molecules with magnetic anisotropy is key for high-density storage and quantum-information technology. Electrons, however, also tunnel via the vibrational excitations unique to a…

Both spin and orbital degrees of freedom contribute to the magnetic moment of isolated atoms. However, when inserted in crystals, atomic orbital moments are quenched because of the lack of rotational symmetry that protects them when…

Mesoscale and Nanoscale Physics · Physics 2015-09-10 P. Potasz , J. Fernandez-Rossier

The effect of hydrogen adsorption on the magnetic properties of an Fe$_3$ cluster immersed in a Cu(111) surface has been calculated using densifty functional theory and the results used to parametrize an Alexander-Anderson model which takes…

Mesoscale and Nanoscale Physics · Physics 2013-12-16 Pavel F. Bessarab , Valery M. Uzdin , Hannes Jónsson

Utilizing spin-polarized scanning tunneling microscopy and spectroscopy, we found coexistence of perpendicularly and in-plane magnetized cobalt nanoscale islands on the Ag(111) surface, and the relationship between the moire corrugation…

Mesoscale and Nanoscale Physics · Physics 2015-09-30 Keiji Doi , Emi Minamitani , Shunji Yamamoto , Ryuichi Arafune , Yasuo Yoshida , Satoshi Watanabe , Yukio Hasegawa

We present results of density-functional calculations on the magnetic properties of Cr, Mn, Fe and Co nano-clusters (1 to 9 atoms large) supported on Cu(001) and Cu(111). The inter-atomic exchange coupling is found to depend on competing…

Materials Science · Physics 2015-05-14 Phivos Mavropoulos , Samir Lounis , Stefan Blügel

We report on the magnetic properties of elongated submicron magnetic islands and their influence on a superconducting film. The magnetic properties were studied by magnetization hysteresis loop measurements and scanning-force microscopy. In…

Superconductivity · Physics 2009-10-31 M. J. Van Bael , K. Temst , V. V. Moshchalkov , Y. Bruynseraede

The steering effect on the growth of islands is investigated by combining molecular dynamics (MD) and kinetic Monte Carlo (KMC) simulations. Dynamics of depositing atoms and kinetics of atoms on a substrate are realized by MD and KMC,…

Materials Science · Physics 2009-11-07 Jikeun Seo , S. -M. Kwon , H. -Y. Kim , J. -S. Kim

The adsorption of hydrogen on the polar Zn-ended ZnO(0001) surface has been investigated by density functional {\it ab-initio} calculations. An on top H(1x1) ordered overlayer with genuine H-Zn chemical bonds is shown to be energetically…

Materials Science · Physics 2015-05-13 N. Sanchez , S. Gallego , J. Cerdá , M. C. Muñoz
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