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Stand-off magnetometry allows measuring magnetic field at a distance, and can be employed in geophysical research, hazardous environment monitoring, and security applications. Stand-off magnetometry based on resonant scattering from atoms…

We describe an ultra-sensitive atomic magnetometer using optically-pumped potassium atoms operating in spin-exchange relaxation free (SERF) regime. We demonstrate magnetic field sensitivity of 160 aT/Hz$^{1/2}$ in a gradiometer arrangement…

Atomic Physics · Physics 2015-05-14 H. B. Dang , A. C. Maloof , M. V. Romalis

Interest in the magnetism of organic compounds is growing because of new organic magnets, spin-based electronics and the diverse properties of magnetic edge states in graphene nanoribbons. Electron spin resonance spectroscopy combined with…

Mesoscale and Nanoscale Physics · Physics 2025-04-28 Gregory Czap , Christoph Wolf , Jose Reina-Gálvez , Mark H. Sherwood , Christopher P. Lutz

We consider various methods and techniques for measuring electron magnetization and susceptibility, which are used in experimental condensed matter physics. The list of considered methods for macroscopic measurements includes…

Materials Science · Physics 2023-02-20 V. M. Pudalov

The operation of a high sensitive atomic magnetometer using resonant elliptically polarized light is demonstrated. The experimental geometry allows autonomous frequency stabilization of the laser, thereby offers compact operation of the…

Atomic Physics · Physics 2016-03-23 S. Pradhan , S. Mishra , R. Behera , Poornima , K. Dasgupta

Atomic magnetometers based on Zeeman shift measurement have the potential for high sensitivity and long-term stability. Like other atomic sensors including atomic clocks and atom interferometers, the atomic magnetometer could in principle…

Quantum Physics · Physics 2025-02-17 Jinyang Li , Gour Pati , Renu Tripathi , Selim M Shahriar

We briefly review the recent studies of the behavior of composite systems in magnetic field. The hydrogen atom is chosen to demonstrate the new results which may be experimentally tested. Possible applications to physics of antihydrogen are…

High Energy Physics - Phenomenology · Physics 2017-08-23 B. O. Kerbikov

Noise properties of an idealized atomic magnetometer that utilizes spin squeezing induced by a continuous quantum nondemolition measurement are considered. Such a magnetometer measures spin precession of $N$ atomic spins by detecting…

We describe a 3He magnetometer capable to measure high magnetic fields (B > 0.1 Tesla) with a relative accuracy of better than 10^-12. Our approach is based on the measurement of the free induction decay of gaseous, nuclear spin polarized…

Instrumentation and Detectors · Physics 2015-06-19 A. Nikiel , P. Blümler , W. Heil , M. Hehn , S. Karpuk , A. Maul , E. Otten , L. M. Schreiber , M. Terekhov

The interaction between light and vapors in the presence of magnetic fields is fundamental to many quantum technologies and applications. Recently, the ability to geometrically confine atoms into periodic structures has enabled the creation…

Applied Physics · Physics 2025-05-20 Ori Nefesh , Heleni Krelman , Kfir Levi , Liron Stern

We investigate the magnetization dynamics of a conducting magnetic nanoparticle weakly coupled to source and drain electrodes, under the assumption that all relaxation comes from exchange of electrons with the electrodes. The magnetization…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Xavier Waintal , Piet W. Brouwer

We extend a microscopic theory of polarization and magnetization to include the spin degree of freedom of the electrons, introducing a general spin orbit coupling and Zeeman interaction term in the Hamiltonian. At finite frequencies and…

Mesoscale and Nanoscale Physics · Physics 2023-07-11 Alistair H. Duff , J. E. Sipe

We propose a novel approach to measure spin polarization of nucleons produced in electron--positron collisions. Using existing tracking devices and supporting structure material, general-purpose spectrometers can be utilized as a…

High Energy Physics - Phenomenology · Physics 2025-01-07 Yu-Tie Liang , Xiao-Rong Lv , Andrzej Kupsc , Boxing Gou , Hai-Bo Li

The magneto-optical activity, namely the polarization conversion capabilities of high-index, non-absorbing, core-shell dielectric nanospheres is theoretically analyzed. We show that, in analogy with their plasmonic counterparts, the…

Mesoscale and Nanoscale Physics · Physics 2016-05-20 N. de Sousa , L. S. Froufe-Pérez , J. J. Sáenz , A. García-Martín

Optomechanical magnetometers enable highly sensitive magnetic field sensing. However, all such magnetometers to date have been optically excited and read-out either via free space or a tapered optical fiber. This limits their scalability…

Polarized atomic ensembles play a crucial role in precision measurements. We demonstrate a novel method of creating atomic polarization in an alkali vapor in a continuous-wave regime. The method relies on a combination of optical pumping by…

Atomic Physics · Physics 2021-10-22 A. Tretiakov , C. A. Potts , Y. Y. Lu , J. P. Davis , L. J. LeBlanc

The magnetization reversal in a single molecular magnet (SMM) weakly coupled to an electrode with spin-dependent splitting of chemical potentials (spin bias) is theoretically investigated by means of the rate equation. A microscopic…

Mesoscale and Nanoscale Physics · Physics 2009-05-14 Hai-Zhou Lu , Bin Zhou , Shun-Qing Shen

The strong coupling between magnetism and ferroelectricity was found in rare earth manganites, where the electric polarization could be induced by special magnetic ordering. There is no theoretical model that would allow us to study the…

Materials Science · Physics 2024-03-14 Mariya Iv. Trukhanova , Pavel A. Andreev , Yuri N. Obukhov

Polarized atomic beam sources have been in operation since many years to produce either nuclear polarized atomic hydrogen or deuterium beams. In recent experiments such a source was used to polarize both isotopes independently at the same…

We investigate the ground-state Hanle effect in alkali-metal vapor irradiating by a resonant elliptically polarized light wave. The magneto-optical resonances are observed as a change in the ellipticity parameter of the light wave…

Atomic Physics · Physics 2025-11-25 D. V. Brazhnikov , A. O. Makarov , K. S. Kozlova , A. N. Goncharov