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Unusual behavior of quantum materials commonly arises from their effective low-dimensional physics, which reflects the underlying anisotropy in the spin and charge degrees of freedom. Torque magnetometry is a highly sensitive technique to…

The manipulation of single magnetic molecules may enable new strategies for high-density information storage and quantum-state control. However, progress in these areas depends on developing techniques for addressing individual molecules…

Spin relaxation can be greatly enhanced in narrow channels of two-dimensional electron gas due to ballistic spin resonance, which is mediated by spin-orbit interaction for trajectories that bounce rapidly between channel walls. The channel…

Mesoscale and Nanoscale Physics · Physics 2010-09-30 W. W. Yu , S. M. Frolov , S. Luescher , J. A. Folk , W. Wegscheider

A key to building functional devices on the basis of single molecule magnets in the framework of molecular electronics is the ability to deposit and study these molecules on a surface, because the structural, electronic and magnetic…

Mesoscale and Nanoscale Physics · Physics 2016-01-26 Judith Donner , Jan-Philipp Broschinski , Bastian Feldscher , Anja Stammler , Hartmut Bögge , Thorsten Glaser , Daniel Wegner

We investigate the effect of surface anisotropy in a spherical many-spin magnetic nanoparticle. By computing minor loops, two-dimensional (2D) and 3D energyscape, and by investigating the behavior of the net magnetization, we show that in…

Statistical Mechanics · Physics 2009-11-11 H. Kachkachi , E. Bonet

We study the behavior of the confining flux tube in $N_f=2+1$ QCD at the physical point, discretized with the stout smearing improved staggered quark action and the tree level Symanzik gauge action. We discuss how it depends on a uniform…

High Energy Physics - Lattice · Physics 2018-04-18 Claudio Bonati , Salvatore Cali , Massimo D'Elia , Michele Mesiti , Francesco Negro , Andrea Rucci , Francesco Sanfilippo

One of the molecular properties most intuitive to the human perception is the geometrical shape. However, when exploring a large chemical space the determination of shape needs to be automated. We present a fast and simple approach to…

Chemical Physics · Physics 2019-04-16 Guido Falk von Rudorff

The intrinsic angular momentum ("spin") of the B mesons has not so far been measured, notwithstanding the large amount of experimental attention that these particles have received in the four decades since the first of them was discovered.…

High Energy Physics - Experiment · Physics 2023-05-29 M. P. Fewell

We theoretically study the transport properties of a supramolecular spin valve, consisting of a carbon nanotube with two attached magnetic molecules, weakly coupled to metallic contacts. The emphasis is put on analyzing the change of the…

Mesoscale and Nanoscale Physics · Physics 2019-03-19 A. Plominska , I. Weymann

Anisotropic magnetic molecules can be employed to manipulate charge transport in molecular nanojunctions. Charge transport through a molecular orbital connected to two leads and exchange-coupled with a precessing anisotropic molecular spin…

Mesoscale and Nanoscale Physics · Physics 2025-09-09 Milena Filipovic

We describe two different modes for electronically detecting an adsorbed molecule using a nanoscale transistor. The attachment of an ionic molecular target shifts the threshold voltage through modulation of the depletion layer…

Mesoscale and Nanoscale Physics · Physics 2008-08-19 S. Vasudevan , K. Walczak , N. Kapur , M. Neurock , A. W. Ghosh

We have theoretically studied the full counting statistics of electron transport through a single-molecule magnet (SMM) with an arbitrary angle between the applied magnetic field and the SMM's easy axis above the sequential tunneling…

Mesoscale and Nanoscale Physics · Physics 2011-04-21 Hai-Bin Xue , Y. -H. Nie , Z. -J. Li , J. -Q. Liang

We investigate the electronic transport through a molecule in the Kondo regime. The tunneling between the electrode and the molecule is asymmetrically modulated by the oscillations of the molecule, i.e., if the molecule gets closer to one…

Mesoscale and Nanoscale Physics · Physics 2008-12-09 J. Mravlje , A. Ramsak

We use neutron diffraction to probe the magnetization components of a crystal of Mn12 single-molecule magnets. Each of these molecules behaves, at low temperatures, as a nanomagnet with spin S = 10 and strong anisotropy along the…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 F. Luis , J. Campo , J. Gomez , G. J. McIntyre , J. Luzon , D. Ruiz-Molina

A local magnetization measurement was performed with a Magnetic Force Microscope (MFM) to determine magnetization in domains of an exchange coupled [Co/Pt]/Co/Ru multilayer with predominant perpendicular anisotropy. The quantitative MFM…

Materials Science · Physics 2011-01-11 S. Vock , F. Wolny , T. Mühl , R. Kaltofen , L. Schultz , B. Büchner , C. Hassel , L. Lindner , V. Neu

A complete set of generalized spin-squeezing inequalities is derived for an ensemble of particles with an arbitrary spin. Our conditions are formulated with the first and second moments of the collective angular momentum coordinates. A…

Quantum Physics · Physics 2015-01-27 Giuseppe Vitagliano , Iagoba Apellaniz , Inigo L. Egusquiza , Geza Toth

The symmetry of single-molecule magnets dictates their spin quantum dynamics, influencing how such systems relax via quantum tunneling of magnetization (QTM). By reducing a system's symmetry, through the application of a magnetic field or…

The dipole strength of magnetic particles in a suspension is obtained by a graphical rectification of the magnetization curves based on the inverse Langevin function. The method yields the arithmetic and the harmonic mean of the particle…

Soft Condensed Matter · Physics 2022-04-01 Ingo Rehberg , Reinhard Richter , Stefan Hartung , Niklas Lucht , Birgit Hankiewicz , Thomas Friedrich

Below 360 mK, Fe magnetic molecular clusters are in the pure quantum relaxation regime and we show that the predicted square-root time relaxation is obeyed, allowing us to develop a new method for watching the evolution of the distribution…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 W. Wernsdorfer , T. Ohm , C. Sangregorio , R. Sessoli , D. Mailly , C. Paulsen

A new concept for spinning unmagnetized plasma is demonstrated experimentally. Plasma is confined by an axisymmetric multi-cusp magnetic field and biased cathodes are used to drive currents and impart a torque in the magnetized edge.…

Plasma Physics · Physics 2012-05-31 C. Collins , N. Katz , J. Wallace , J. Jara-Almonte , I. Reese , E. Zweibel , C. B. Forest
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