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We address the textbook problem of dynamics of a spin placed in a dc magnetic field and subjected to an ac drive. If the drive is polarized in the plane perpendicular to the dc field, the drive photons are resonantly absorbed when the…

Quantum Physics · Physics 2020-01-01 V. V. Mkhitaryan , C. Boehme , J. M. Lupton , M. E. Raikh

The initial success of the Rigidly Rotating Magnetosphere (RRM) model application to the B2Vp star sigma OriE by Townsend, Owocki & Groote (2005) triggered a renewed era of observational monitoring of this archetypal object. We utilize…

Solar and Stellar Astrophysics · Physics 2015-05-20 M. E. Oksala , O. Kochukhov , J. Krticka , R. H. D. Townsend , G. A. Wade , M. Prvak , Z. Mikulasek , J. Silvester , S. P. Owocki

We discuss the spin excitations in systems with hopping electron conduction and strong position disorder. We focus on the problem in a strong magnetic field when the spin Hamiltonian can be reduced to the effective single-particle…

Disordered Systems and Neural Networks · Physics 2016-08-24 A. V. Shumilin

From the study of long-range-interacting systems to the simulation of gauge fields, open-shell Lanthanide atoms with their large magnetic moment and narrow optical transitions open novel directions in the field of ultracold quantum gases.…

Recently, a putative magnetoreceptor in the upper-beak skin of homing pigeons was chemically characterized using X-ray flourescence and absorbtion studies [Fleissner et al., 2007. A novel concept of Fe-mineral based magnetoreception:…

Biological Physics · Physics 2008-05-16 Michael Winklhofer , Joseph L. Kirschvink

We report on a novel method for photo-association of strongly polar trilobite Rydberg molecules. This exotic ultralong-range dimer, consisting of a ground-state atom bound to the Rydberg electron via electron-neutral scattering, inherits…

Sensitive sequencing of biopolymers by nanopore-based translocation techniques requires extension of the time spent by the molecule in the pore. We develop an electrostatic theory of polymer translocation to show that the translocation time…

Soft Condensed Matter · Physics 2018-11-12 Sahin Buyukdagli , Jalal Sarabadani , Tapio Ala-Nissila

We theoretically propose the emergence of nonlinear nonreciprocal conductivity in centrosymmetric paramagnetic systems when a spatially gradient magnetic field is externally applied. The key essence lies in the appearance of magnetic…

Strongly Correlated Electrons · Physics 2024-12-25 Taisei Yamanaka , Yoshihiko Ihara , Satoru Hayami

We probe resonant dipolar interactions between ultracold $^{40}$K$^{87}$Rb molecules and Rydberg $^{87}$Rb atoms in an optically trapped ensemble. Through state-selective ionization detection of the KRb molecules, we observe resonant energy…

Atomic Physics · Physics 2025-04-10 Lingbang Zhu , Jeshurun Luke , Roy Shaham , Yi-Xiang Liu , Kang-Kuen Ni

In this paper we study magnetoelectric effects in two-dimensional magnetic bilayers and introduce the notion of a layer dipole magnetoelectric polarizability. This magnetoelectric polarizability describes the magnetization response to an…

Strongly Correlated Electrons · Physics 2025-12-08 H. Radhakrishnan , C. Ortix , J. W. F. Venderbos

We discuss the propagation of an electromagnetic field in an inhomogeneously anisotropic material where the optic axis is rotated in the transverse plane but is invariant along the propagation direction. In such a configuration, the…

Magneto-optic behaviour is a specific, non-reciprocal example of gyrotropic behaviour. When coupled to photo-induced Faraday rotation it is possible to discriminate this effect from the background of other nonlinear effects Non-reciprocal…

Soft Condensed Matter · Physics 2007-05-23 Allan D. Boardman , Larry Velasco , Peter Egan

The yield of chemical reactions involving intermediate radical pairs is influenced by magnetic fields well beyond the levels expected from energy considerations. This dependence can be traced back to the microscopic dynamics of electron…

Biological Physics · Physics 2013-05-29 Gian Giacomo Guerreschi , Markus Tiersch , Ulrich E. Steiner , Hans J. Briegel

The resonant enhancement of mechanical and optical interaction in optomechanical cavities enables their use as extremely sensitive displacement and force detectors. In this work we demonstrate a hybrid magnetometer that exploits the…

All-dielectric "magnetic light" nanophotonics based on high refractive index nanoparticles allows controlling magnetic component of light at nanoscale without having high dissipative losses. The artificial magnetic optical response of such…

Significant progress was made in recent years in the understanding of the proton spin kinetics in polymer melts. Generally, the proton spin kinetics is determined by intramolecular and intermolecular magnetic dipole-dipole contributions of…

Soft Condensed Matter · Physics 2015-06-19 N. Fatkullin , S. Stapf , M. Hofmann , R. Meierc , E. A. Roessler

Our aim is to demonstrate the limitations of using a single component model to study the magnetic field of an active region filament. For that we have analyzed the polarimetric signals of the He I 10830 A multiplet acquired with the…

Solar and Stellar Astrophysics · Physics 2019-05-29 C. J. Díaz Baso , M. J. Martínez González , A. Asensio Ramos

Humans excel at robust bipedal walking in complex natural environments. In each step, they adequately tune the interaction of biomechanical muscle dynamics and neuronal signals to be robust against uncertainties in ground conditions.…

We derive and simulate a mathematical model for mechanotransduction related to the Rho GTPase signalling pathway. The model addresses the bidirectional coupling between signalling processes and cell mechanics. A numerical method based on…

Numerical Analysis · Mathematics 2025-06-11 Sofie Verhees , Chandrasekhar Venkataraman , Mariya Ptashnyk

We study the nearest-neighbor spin-ice model subjected to a magnetic field applied along the global [111] and [110] directions, focusing on the role of sample geometry in stabilizing topological phase transitions. While no Kasteleyn…

Statistical Mechanics · Physics 2026-04-30 R. A. Borzi , E. S. Loscar , S. A. Grigera