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A new calorimeter for measurements of the AC heat capacity and magnetocaloric effect of small samples in pulsed magnetic fields is discussed for the exploration of thermal and thermodynamic properties at temperatures down to 2 K. We tested…

Materials Science · Physics 2010-10-20 Yoshimitsu Kohama , Christophe Marcenat , Thierry Klein , Marcelo Jaime

We report experimental results on the first on-sky observation of atomic spin precession of mesospheric sodium driven by polarization modulation of a continuous-wave laser. The magnetic resonance was remotely detected from the ground by…

We report on the design, fabrication, and implementation of ultrasensitive micromechanical oscillators. Our ultrathin single-crystal silicon cantilevers with integrated magnetic structures are the first of their kind: They are fabricated…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Michelle D. Chabot , John M. Moreland , Lan Gao , Sy-Hwang Liou , Casey W. Miller

Magnetically levitated superconducting microparticles offer a promising path to quantum experiments with picogram to microgram objects. In this work, we levitate a 700ng $\sim 10^{17}$amu superconducting microsphere in a magnetic chip trap…

We describe a single beam compact Spin Exchange Relaxation Free(SERF) magnetometer whose configuration is compatible with the silicon-glass bonding micro-machining method. A cylindrical vapor cell with 3mm diameter and 3mm in length is…

Instrumentation and Detectors · Physics 2021-01-07 Yao Chen , Yintao Ma , Minzhi Yu , Ning Zhang , Libo Zhao , Xiangguang Han , Zhuangde Jiang

We present the design of a highly compact High Field Scanning Probe Microscope (HF-SPM) for operation at cryogenic temperatures in an extremely high magnetic field, provided by a water-cooled Bitter magnet able to reach 38 T. The HF-SPM is…

Instrumentation and Detectors · Physics 2018-11-21 L. Rossi , J. W. Gerritsen , L. Nelemans , A. A. Khajetoorians , B. Bryant

Atomic comagnetometers, which measure the spin precession frequencies of overlapped species simultaneously, are widely applied to search for exotic spin-dependent interactions. Here we propose and implement an all-optical single-species Cs…

Atomic Physics · Physics 2021-03-17 Yucheng Yang , Teng Wu , Jingbiao Chen , Xiang Peng , Hong Guo

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

Atomic clocks play a crucial role in timekeeping, communications, and navigation systems. Recent efforts enabled by heterogeneous MEMS integration have led to the commercial introduction of Chip-Scale Atomic Clocks (CSAC) with a volume of…

We develop and demonstrate a new protocol that allows sensing of magnetic fields in an extra-ordinary regime for atomic magnetometry. Until now, the demonstrated bandwidth for atomic magnetometry has been constrained to be slower than the…

The AC magnetic susceptibility is a fundamental method in materials science, which allows to probe the dynamic magnetic response of magnetic materials and superconductors. The LAMPS laboratory at the Laboratori Nazionali di Frascati of the…

Instrumentation and Detectors · Physics 2014-06-12 Shenghao Wang , Augusto Marcelli , Daniele Di Gioacchino , Ziyu Wu

We discuss the design and performance of a very sensitive low-field magnetometer based on the detection of free spin precession of gaseous, nuclear polarized 3He or 129Xe samples with a SQUID as magnetic flux detector. The device will be…

Zero- and ultralow-field nuclear magnetic resonance (ZULF NMR) has experienced rapid development and provides an excellent tool for diverse research fields ranging from materials science, quantum information processing to fundamental…

Quantum Physics · Physics 2024-03-05 Taizhou Hong , Yuanhong Wang , Zhenhan Shao , Qing Li , Min Jiang , Xinhua Peng

Recent advances in scanning probe techniques rely on the chemical functionalization of the probe-tip termination by a single molecule. The success of this approach opens the tantalizing prospect of introducing spin sensitivity through the…

Mesoscale and Nanoscale Physics · Physics 2020-01-08 B. Verlhac , N. Bachellier , L. Garnier , M. Ormaza , P. Abufager , R. Robles , M. -L. Bocquet , M. Ternes , N. Lorente , L. Limot

We demonstrate a dynamic scanning capacitance microscope (DSCM) that operates at large bandwidths, cryogenic temperatures and high magnetic fields. The setup is based on a non-contact atomic force microscope (AFM) with a quartz tuning fork…

Instrumentation and Detectors · Physics 2009-03-12 A. Baumgartner , M. E. Suddards , C. J. Mellor

We present a portable four-channel atomic magnetometer array operating in the spin exchange relaxation-free regime. The magnetometer array has several design features intended to maximize its suitability for biomagnetic measurement,…

Medical Physics · Physics 2012-07-25 R Wyllie , M Kauer , G Smetana , R Wakai , T Walker

We have developed a broadband scanning tunnelling microscope capable of conventional, low frequency (<10 kHz), microscopy as well spectroscopy and shot-noise detection at 1 MHz. After calibrating our AC circuit on a gold surface, we…

Mesoscale and Nanoscale Physics · Physics 2018-09-28 Freek Massee , Quan Dong , Antonella Cavanna , Yong Jin , Marco Aprili

We developed a new type of AC microcalorimeter based on a modulated-bath technique for measuring the specific heat of small microgram samples in the temperature range from 30-300 K, and tested it in magnetic fields up to 14 T. The device is…

Other Condensed Matter · Physics 2015-06-25 Rolf Lortz , Satoko Abe , Yuxing Wang , Frederic Bouquet , Ulrich Tutsch , Alain Junod

The chromosphere is a highly complex and dynamic layer of the Sun, that serves as a conduit for mass and energy supply between two, very distinct regions of the solar atmosphere, namely, the photosphere and corona. Inferring magnetic fields…

Solar and Stellar Astrophysics · Physics 2017-09-06 Rohan E. Louis , A. Raja Bayanna , Hector Socas Navarro

We report the observation of tunable spin-orbit coupling (SOC) for ultracold $^{87}$Rb atoms in hyperfine spin-1 states. Different from most earlier experiments where atomic SOC of pseudo-spin-1/2 are synthesized with Raman coupling lasers,…

Quantum Gases · Physics 2017-01-05 Xinyu Luo , Lingna Wu , Jiyao Chen , Qing Guan , Kuiyi Gao , Zhi-Fang Xu , L. You , Ruquan Wang