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We have developed a new micro-fabricated platform for the measurement of the specific heat of low heat capacity mg-sized metallic samples, such as superconductors, down to temperatures of as low as $10\,\mathrm{mK}$. It addresses…

Instrumentation and Detectors · Physics 2020-03-24 Andreas Reifenberger , Andreas Reiser , Sebastian Kempf , Andreas Fleischmann , Christian Enss

Nitrogen-vacancy centers in diamond are attractive as quantum sensors owing to their remarkable optical and spin properties under ambient conditions. Here we experimentally demonstrated a hybrid fiber-based thermometer coupled with…

Instrumentation and Detectors · Physics 2019-07-29 Shao-Chun Zhang , Shen Li , Bo Du , Yang Dong , Yu Zheng , Hao-Bin Lin , Bo-Wen Zhao , Wei Zhu , Guan-Zhong Wang , Xiang-Dong Chen , Guang-Can Guo , Fang-Wen Sun

X-ray calorimetric sample platforms combining specific heat and synchrotron x-ray measurements provide a powerful means to investigate fundamental material properties. Calorimeter cell designs featuring a compact heater and thermometer…

Instrumentation and Detectors · Physics 2026-02-02 U. Patel , H. Zheng , J. L. McChesney , U. Welp , Z. Islam , A. Miceli

We describe a helium evaporation refrigerator used to cool dynamically polarized proton and deuteron targets for electron-scattering experiments using the CEBAF Large Acceptance Spectrometer CLAS12 at Jefferson Lab. The geometry of the…

We have developed low temperature part of an ultra high vacuum scanning probe microscope (UHV-SPM) working at variable temperature within the range from 20 K to 700 K. To achieve the required temperature range, a flow cooling system using…

Instrumentation and Detectors · Physics 2016-10-04 Jiri Frolec , Jakub Vonka , Pavel Hanzelka , Tomas Kralik , Vera Musilova , Pavel Urban

A clamp pressure cell for neutron scattering experiments at low temperatures and in external magnetic fields under pressure up to 2~GPa has been fabricated and tested. The cell provides optical access to the sample space that allows…

Instrumentation and Detectors · Physics 2019-04-29 A. Podlesnyak , M. Loguillo , G. M. Rucker , B. Haberl , R. Boehler , G. Ehlers , L. L. Daemen , D. Armitage , M. D. Frontzek , M. Lumsden

A vacuum compatible cryogenic accelerometer is presented which will reach $<0.5$ p$g$ Hz$^{-1/2}$ sensitivity from 1 mHz to 10 Hz with a maximum sensitivity of 10 f$g$ Hz$^{-1/2}$ around 10 Hz. This figure can be translated to a…

Applied Physics · Physics 2020-08-26 Joris Vincent van Heijningen

We study the shift of the the superconducting transition temperature $T_c$ in ferromagnetic-superconducting bi-layers and in a superconducting film supplied a square array of ferromagnetic dots. We find that the transition temperature in…

Superconductivity · Physics 2009-11-10 Valery L. Pokrovsky , Hongduo Wei

Magneto-optical traps (MOTs) are widely used for laser cooling of atoms. We have developed a high-flux compact cold-atom source based on a pyramid MOT with a unique adjustable aperture that is highly suitable for portable quantum technology…

Atomic Physics · Physics 2021-07-07 Sean Ravenhall , Benjamin Yuen , Chris Foot

The metamagnetic transition between the antiferromagnetic and paramagnetic state in UIrGe has been studied at various temperatures by magnetization, heat capacity and magnetocaloric-effect measurements on a single crystal in static and…

The temperature measurement of material inside of an object is one of the key technologies for control of dynamical processes. For this purpose, various techniques such as laser-based thermography and phase-contrast imaging thermography…

A Faraday force magnetometer is presented for measurements of magnetization at temperatures down to 100~mK and in magnetic fields up to 14~T. The specimen is mounted on a flexible cantilever forming a force-sensing capacitor in combination…

Materials Science · Physics 2020-07-22 Dominic Blosser , Leonardo Facheris , Andrey Zheludev

We have developed a versatile near-field microscopy platform that can operate at high magnetic fields and below liquid-helium temperatures. We use this platform to demonstrate an extreme terahertz (THz) nanoscope operation and to obtain the…

Mesoscale and Nanoscale Physics · Physics 2023-08-17 Richard H. J. Kim , Joong-Mok Park , Samuel J. Haeuser , Liang Luo , Jigang Wang

This paper deals with an analytical modeling of heat transfers simulating a new radiation calorimeter operating in a temperature range from -50 {\deg}C to 150 {\deg}C. The aim of this modeling is the evaluation of the feasibility and…

Instrumentation and Detectors · Physics 2016-01-11 Elysée Obame Ndong , Olivier Gallot-Lavallée , Frédéric Aitken

There is a growing demand for experiments on calorimetric and thermal transport measurements at ultra-low temperatures below 1 mK and high magnetic fields up to 16 T. Particularly, milligram-sized solid samples are of great interest. We…

Instrumentation and Detectors · Physics 2022-10-17 Andrew J. Woods , Alexander. M. Donald , Rasul Gazizulin , Eddy Collin , Lucia Steinke

We demonstrate the electrical and optical control of ferromagnetism in semiconductor heterostructures at high temperatures of 100-117 K. The heterostructures consist of Mn delta-doped GaAs and p-type AlGaAs, where the overlap of the hole…

Materials Science · Physics 2007-05-23 Ahsan M. Nazmul , S. Kobayashi , S. Sugahara , M. Tanaka

Perfect-crystal neutron interferometry has been a useful tool in measuring nuclear-interactions, probing fundamental physics, and exploring quantum phenomenon. Historically, neutron interferometry experiments have been carried out at room…

Neutral hydrogen 21 cm transition is a useful tracer of the neutral interstellar medium. However, inferring physical condition from the observed 21 cm absorption and/or emission spectra is often not straightforward. One complication in…

Astrophysics of Galaxies · Physics 2021-01-13 Atanu Koley , Nirupam Roy

This paper presents detailed characteristics of an ultra-cold bright metastable neon atomic beam which we have been using for atom-interferometric applications. The basis of the device is an atomic beam released from a magneto-optical trap…

Atomic Physics · Physics 2015-05-08 Fujio Shimizu

We describe an AC method for the measurement of the longitudinal (Sxx) and transverse (Sxy, i.e. Nernst) thermopower of mm-size single crystal samples at low temperatures (T<1 K) and high magnetic fields (B>30 T). A low-frequency (33 mHz)…

Instrumentation and Detectors · Physics 2009-11-06 E. S. Choi , J. S. Brooks , J. S. Qualls , Y. S. Song