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This paper studies the ergodic rate performance of regularized zero-forcing (RZF) precoding in the downlink of a multi-user multiple-input single-output (MISO) system, where the channel between the base station (BS) and each user is modeled…

Information Theory · Computer Science 2019-04-30 Qurrat-Ul-Ain Nadeem , Abla Kammoun , Merouane Debbah , Mohamed-Slim Alouini

We study the effects of the magnetic field on the relaxation of the magnetization of small monodomain non-interacting particles with random orientations and distribution of anisotropy constants. Starting from a master equation, we build up…

Materials Science · Physics 2016-08-16 Oscar Iglesias , Amílcar Labarta

We demonstrate a novel quantum sensor for measuring non-magnetic spin-dependent interactions. This sensor utilizes $^{131}$Xe, $^{129}$Xe, and $^{85}$Rb which are continuously polarized transverse to a pulsed bias field. The transverse…

Atomic Physics · Physics 2019-12-12 Daniel A. Thrasher , Susan S. Sorensen , Thad G. Walker

The ground-state Hanle effect (GSHE) in alkali-metal atomic vapors using a single circularly polarized wave underlies one of the most robust and simplest techniques in atomic magnetometry. This effect causes a narrow (subnatural-width)…

Atomic Physics · Physics 2022-07-27 D. V. Brazhnikov , V. I. Vishnyakov , A. N. Goncharov , E. Alipieva , C. Andreeva , E. Taskova

Antenna selection (AS) is regarded as one of the most prospective technologies to reduce hardware cost but keep relatively high spectral efficiency in multi-antenna systems. By selecting a subset of antennas to transceive messages, AS…

Signal Processing · Electrical Eng. & Systems 2019-07-17 Chongjun Ouyang , Hongwen Yang

This paper investigates the symbol error probability~(SEP) of point-to-point massive multiple-input multiple-output (MIMO) systems using equally likely PAM, PSK, and square QAM signallings in the presence of transmitter correlation. The…

Information Theory · Computer Science 2019-01-03 Zheng Dong , Jian-Kang Zhang , He Chen

We study the multistable behavior of the intersubband optical absorption for InSb-based tunnel coupled quantum wells. We consider four sublevels coming from the Zeeman spin splitting of the two deepest levels, caused by a weak in-plane…

Mesoscale and Nanoscale Physics · Physics 2015-11-17 P. Aceituno , A. Hernandez-Cabrera

The achievement of sustained nuclear fusion in magnetically confined plasma relies on efficient confinement of high-energy ions produced by the fusion reaction. Such particles can excite Alfven Eigenmodes (AEs), which significantly degrade…

Plasma Physics · Physics 2015-03-18 Maxime Lesur

Alkali-metal atomic magnetometers suffer from heading errors in geomagnetic fields as the measured magnetic field depends on the orientation of the sensor with respect to the field. In addition to the nonlinear Zeeman splitting, the…

Atomic Physics · Physics 2021-06-09 W. Lee , V. G. Lucivero , M. V. Romalis , M. E. Limes , E. L. Foley , T. W. Kornack

We built and characterised a macroscopic self-assembly reactor that agitates magnetic, centimeter-sized particles with a turbulent water flow. By scaling up the self-assembly processes to the centimeter-scale, the characteristic time…

Soft Condensed Matter · Physics 2018-02-14 T. A. G. Hageman , P. A. Löthman , M. Dirnberger , M. Elwenspoek , A. Manz , L. Abelmann

Combining electron paramagnetic resonance (EPR) with scanning tunneling microscopy (STM) enables detailed insight into the interactions and magnetic properties of single atoms on surfaces. A requirement for EPR-STM is the efficient coupling…

Mesoscale and Nanoscale Physics · Physics 2020-01-15 T. S. Seifert , S. Kovarik , C. Nistor , L. Persichetti , S. Stepanow , P. Gambardella

A binary mixture of particles interacting with spherically-symmetric potentials leading to microsegregation is studied by theory and molecular dynamics (MD) simulations. We consider spherical particles with equal diameters and volume…

Soft Condensed Matter · Physics 2020-11-20 O. Patsahan , M. Litniewski , A. Ciach

We investigate magnetization dynamics in asymmetric interlayer exchange coupled Py/Ru/Py trilayers using both vector network analyzer-based and electrically detected ferromagnetic resonance techniques. Two different ferromagnetic resonance…

Mesoscale and Nanoscale Physics · Physics 2020-06-24 S. Sorokin , R. A. Gallardo , C. Fowley , K. Lenz , A. Titova , G. Y. P Atcheson , G. Dennehy , K. Rode , J. Fassbender , J. Lindner , A. M. Deac

Ensemble averaging of molecular states is fundamental for the experimental determination of thermodynamic quantities. A special case occurs for single-molecule investigations under equilibrium conditions, for which free energy, entropy and…

The detection of suspended single particles (SSPs) in water is a crucial element for monitoring water ecosystems. Although there are a variety of sensory methods, it is still an unrealized goal to combine multi-wavelength polarized light…

Optics · Physics 2024-10-31 Tong Liu

We present an experimental and theoretical study of a scalar atomic magnetometer using an oscillating field-driven Zeeman resonance in a high-density optically-pumped potassium vapor. We describe an experimental implementation of an atomic…

Atomic and Molecular Clusters · Physics 2013-05-29 S. J. Smullin , I. M. Savukov , G. Vasilakis , R. K. Ghosh , M. V. Romalis

We report the results of a set of simulations of small arrays of submicron ferromagnetic particles. The actions of dipolar and exchange interactions were qualitatively investigated by analysing the ferromagnetic resonance spectra at 9.37…

Materials Science · Physics 2009-11-13 Christine C. Dantas , Luiz A. de Andrade

Polarimetry is extensively used as a tool to trace the interstellar magnetic field projected on the plane of sky. Moreover, it is also possible to estimate the magnetic field intensity from polarimetric maps based on the Chandrasekhar-Fermi…

Astrophysics · Physics 2009-11-13 D. Falceta-Goncalves , A. Lazarian , G. Kowal

Storing and accessing information in atomic-scale magnets requires magnetic imaging techniques with single-atom resolution. Here, we show simultaneous detection of the spin-polarization and exchange force, with or without the flow of…

Mesoscale and Nanoscale Physics · Physics 2017-08-16 Nadine Hauptmann , Jan W. Gerritsen , Daniel Wegner , Alexander A. Khajetoorians