Results 101 to 110 of about 25,141 (249)
St. Petersburg Polytechnical University Journal: Physics and MathematicsThe article presents a method developed by the authors for measuring the direction of a magnetic field using an MZ-type quantum magnetometer, the readings of which are used to correct the frequency of an onboard small-sized rubidium atomic clock.
Ermak Sergey +2 more
doaj +1 more source
New Limits on Local Lorentz Invariance in Mercury and Cesium
, 2012 We report new bounds on Local Lorentz Invariance (LLI) violation in Cs and Hg. The limits are obtained through the observation of the the spin- precession frequencies of 199Hg and 133Cs atoms in their ground states as a function of the orientation of an ...
A. Foss +7 more
core +1 more source
Advanced Science, EarlyView.The interplay between magnetic ordering and crystal electric field (CEF) excitations plays a pivotal role in defining the low‐energy electrodynamics of quantum materials. By probing the temperature‐dependent THz conductivity in a rare‐earth‐based metallic ferromagnet, we uncover a microscopic connection between localized and itinerant electrons ...
Payel Shee +11 more
wiley +1 more source
IEEE Access, 2019 The atomic magnetometer in the application of simultaneous multichannel biomagnetic field measurement has gained increasing attention in recent researches.
Ji Zhang +7 more
doaj +1 more source
Hidden Charge‐Order in the Mixed‐Valent K0.75Li2Cr6O12 High‐Pressure Oxide
Advanced Science, EarlyView.K0.75Li2Cr6O12 is one of the few mixed valent chromium oxides. It shows a single angle spiral magnetic structure with a k = [1/3 1/3 ¼] propagation vector. Density functional theory reveals a hidden charge order that is necessary to stabilize the antiferromagnetic (AFM) ground state.
Angel M. Arévalo‐López +3 more
wiley +1 more source
Advanced Science, EarlyView.This study demonstrates a strain‐tunable anomalous Hall response in the (110)‐oriented FeRh thin film. First‐principles calculations reveal that strain‐induced symmetry lowering redistributes Berry curvature near the Fermi level via band shifts and avoided crossings.
Yun‐Ho Kim +11 more
wiley +1 more source
Optical vortex atomic magnetometer
Abstract We introduce an atomic magnetometer based on 85Rb atomic sensing in double-pass configuration, which is normally used in Dopplerfree saturation spectroscopy. Both the Zeeman and the Faraday effect take place in our technique. We enhance our magnetometer with an optical vortex (OV) beam contained orbital angular momentum (OAM) state. An
Sarayut Deachapunya +3 more
openaire +1 more source
Three‐Dimensional Heterogeneous Bonding for High‐Density and Low‐Noise TMR Sensing Arrays
Advanced Science, EarlyView.This study demonstrates a three‐dimensional heterogeneous bonding approach to fabricate compact TMR sensing units with double junction numbers and improved magnetic performance. Optimized Au─Au bonding and angled etching improve device integrity, noise characteristics, and magnetoresistance.
Zi'ang Han +3 more
wiley +1 more source
Signal-enhanced high-sensitivity atomic magnetometer based on multi-pass cell
Applied Physics ExpressWe propose a signal- and sensitivity-enhanced spin-exchange-relaxation-free atomic magnetometer utilizing a multi-pass cell with a highly spatially homogeneous optical pumping scheme. The relationship between the magnetometer’s performance and the number
Jin Peng +5 more
doaj +1 more source
Robust High-Dynamic-Range Vector Magnetometry via Nitrogen-Vacancy Centers in Diamond
, 2018 We demonstrate a robust, scale-factor-free vector magnetometer, which uses a closed-loop frequency-locking scheme to simultaneously track Zeeman-split resonance pairs of nitrogen-vacancy (NV) centers in diamond.
Budker D. +6 more
core +1 more source