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Semiconductor tunable barrier single-electron pumps can produce output current of hundreds of picoamperes at sub ppm precision, approaching the metrological requirement for the direct implementation of the current standard. Here, we operate…

Mesoscale and Nanoscale Physics · Physics 2024-03-01 Ajit Dash , Steve Yianni , MengKe Feng , Fay Hudson , Andre Saraiva , Andrew S. Dzurak , Tuomo Tanttu

Anticipating forthcoming observations with the Chandra X-ray telescope, we describe the continuation of interstellar cooling flows deep into the cores of elliptical galaxies. Interstellar gas within about r = 50 parsecs from the massive…

Astrophysics · Physics 2009-10-31 Fabrizio Brighenti , William G. Mathews

The variation of current I with voltage V for poly(phenylene vinylene) and other polymer light-emitting diodes has been attributed to carriers tunneling into broad conduction and valence bands. In actuality the electrons and holes tunnel…

Condensed Matter · Physics 2009-10-30 E. M. Conwell , M. W. Wu

In this paper we analyze the problem of glow discharge in low pressure plasma in industrial plant, for chambers of different shapes and various working parameters, like pressure and electric potential. The model described is based upon a…

Helicity-dependent photocurrent delta-I has been detected successfully under experimental configuration that a circularly polarized light beam is impinged with a right angle on a cleaved sidewall of the Fe/x-AlOx/GaAs-based n-i-p…

Optics · Physics 2014-04-17 H. Ikeda , N. Nishizawa , K. Nishibayashi , H. Munekata

Combined microwave and dc electrical transport measurements at low temperatures represent a valuable experimental method in many research areas. In particular, when samples are conventional superconductors, a typical experiment requires a…

Superconductivity · Physics 2017-05-01 Oleksandr V. Dobrovolskiy , Jörg Franke , Michael Huth

We study the breakdown of diffusive hydrodynamics in holographic systems dual to neutral dilatonic black holes with extremal near horizon geometries conformal to AdS$_2\times\,$R$^2$. We find that at low temperatures by tuning the effective…

High Energy Physics - Theory · Physics 2022-01-28 Yan Liu , Xin-Meng Wu

The small angle neutron scattering from liquid helium at saturated vapour pressure in the temperature range from 1.5 to 4.2 K was measured with the instrument D22 of the ILL Grenoble at a wavelength of 4.6 angstrom. The zero angle cross…

Soft Condensed Matter · Physics 2007-05-23 Yu. M. Tsipenyuk , R. P. May

We show that there can exist two liquid states in distinguishable helium-4 ($^4$He) obeying Boltzmann statistics by path integral centroid molecular dynamics (CMD) simulations. This is an indication of quantum liquid polyamorphism induced…

Chemical Physics · Physics 2024-07-30 Momoko Tsujimoto , Kenichi Kinugawa

The liquid-gas transition of an electroneutral mixture of oppositely charged colloids, studied by Monte Carlo simulations, is found in the low temperature -- low density region. The critical temperature shows a non-monotonous behavior as a…

I present a reanalysis of temperature data from a publicly available certified laboratory report that documented the self-discharging behavior of an energy-storage device during 10 days. Graphs of temperature variations of both the tested…

Instrumentation and Detectors · Physics 2026-03-27 Pertti O. Tikkanen

We demonstrate an approach for producing a high flux beam of $^7$Li$^4$He dimers by performing post-nozzle seeding of a lithium beam into a supersonic helium expansion. The molecular beam has a longitudinal temperature of 13(6) mK and a…

Atomic Physics · Physics 2024-05-24 Jeremy Glick , William Huntington , Daniel Heinzen

The resistivity of polycrystalline chemical vapor deposition diamond sensors is studied in samples exposed to fluences relevant to the environment of the High Luminosity Large Hadron Collider. We measure the leakage current for a range of…

Instrumentation and Detectors · Physics 2013-10-11 Rui Wang , Martin Hoeferkamp , Sally Seidel

The c-axis tunneling properties of both pristine Bi2212 and its HgBr$_2$ intercalate have been measured in the temperature range 4.2 - 250 K. Lithographically patterned 7-10 unit-cell heigh mesa structures on the surfaces of these single…

Superconductivity · Physics 2015-06-25 A. Yurgens , D. Winkler , T. Claeson , Seong-Ju Hwang , Jin-Ho Choy

We consider thermo-optic hysteresis in a silicon structure supporting bound state in the continuum. Taking into account radiative heat transfer as a major cooling mechanism we constructed a non-linear model describing the optical response.…

We use the one-dimensional object-oriented particle-in-cell Monte Carlo collision code oopd1 to explore the charged particle densities, the electronegativity, the electron energy probability function (EEPF), and the electron heating…

Plasma Physics · Physics 2017-11-28 Jon Tomas Gudmundsson , David I. Snorrason

We have demonstrated that hole-type gaseous detectors, GEMs and capillary plates, can operate up to 77 K. For example, a single capillary plate can operate at gains of above 10E3 in the entire temperature interval between 300 until 77 K.…

Instrumentation and Detectors · Physics 2007-05-23 L. Pereiale , V. Peskov , C. Iacobaeus , T. Francke , B. Lund-Jensen , P. Pavlopoulos , P. Picchi , F. Pietropaolo , F. Tokanai

Microdischarges formed in bubbles immersed in liquids are of interest for materials synthesis and chemical conversion applications in the frame of plasma-driven electrochemistry. A key challenge associated with controlling such processes is…

Cryogenic transmission electron microscopy has revolutionized structural biology and materials science, but achieving temperatures below the boiling point of liquid nitrogen remains a long-standing aspiration. We introduce an ultra-cold…

Using a sample of nearly half million galaxies, intersected by over 7 million lines of sight from the Sloan Digital Sky Survey Data Release 12, we trace H$\alpha$ + [N{\small II}] emission from a galactocentric projected radius, $r_p$, of 5…

Astrophysics of Galaxies · Physics 2016-12-28 Huanian Zhang , Dennis Zaritsky , Guangtun Zhu , Brice Ménard , David W. Hogg