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The negative-U impurity stripes confining the edge channels of semiconductor quantum wells are shown to allow the effective cooling inside in the process of the spin-dependent transport, with the reduction of the electron-electron…

Mesoscale and Nanoscale Physics · Physics 2020-12-01 N. T. Bagraev , V. Yu. Grigoryev , L. E. Klyachkin , A. M. Malyarenko , V. A. Mashkov , V. V. Romanov , N. I. Rul

In our desire to give a new suggestion for H-based superconductors experiments we present a theoretical framework for understanding the impact of an applied electric field on pressured hydride superconductors. We study a material at…

Superconductivity · Physics 2022-03-14 Naoum Karchev

We have investigated how a strong magnetic field (B) could decipher the anisotropic interaction in heavy quark ($Q$) and antiquark ($\bar Q$) bound states through the perturbative thermal QCD in real-time formalism. So we thermalize…

High Energy Physics - Phenomenology · Physics 2020-04-21 Salman Ahamad Khan , Binoy Krishna Patra , Mujeeb Hasan

This paper studies the effects of mixed convection fluid motion and heat transmission of Al2O3-Water nanofluid in a square enclosure including two heated obstacles, with temperature and nanoparticle concentration being determined by the…

Fluid Dynamics · Physics 2024-01-12 Hashnayne Ahmed , Chinmayee Podder

Molecules dominate the cooling function of neutral metal-poor gas at high density. Observation of molecules at high redshift is thus an important tool toward understanding the physical conditions prevailing in collapsing gas. Up to now,…

Astrophysics · Physics 2007-05-23 Patrick Petitjean

We report the results of AstroSat observations of GRS 1915$+$105 obtained using 100 ks guaranteed-time (GT) during the soft state. The Color-Color Diagram (CCD) indicates a variability class of $\delta$ with the detection of High Frequency…

High Energy Astrophysical Phenomena · Physics 2020-11-18 Sreehari H. , Anuj Nandi , Santabrata Das , V. K. Agrawal , Samir Mandal , M. C. Ramadevi , Tilak Katoch

Two kinds of processes could occur during the flare decay phase: processes of energy release or processes of energy relaxation. Quasi-periodic pulsations (QPPs) of the broadband emission are a good tool for the verification of mechanisms.…

A quantum critical point (QCP) develops in a material at absolute zero when a new form of order smoothly emerges in its ground state. QCPs are of great current interest because of their singular ability to influence the finite temperature…

Strongly Correlated Electrons · Physics 2009-11-10 S. Paschen , T. Luhmann , S. Wirth , P. Gegenwart , O. Trovarelli , C. Geibel , F. Steglich , P. Coleman , Qimiao Si

\begin{abstract} We have studied magnetic properties of water-quenched 5 wt.% (Fe, Ti) particle-doped MgB$_2$ comparing with that of air-cooled one. Generally, grain refinement is achieved by increasing cooling rate, which implies an…

Applied Physics · Physics 2020-06-02 H. B. Lee , G. C. Kim , Hyoungjeen Jeen , Y. C. Kim

Quarkonium suppression is one of the most investigated probes of the medium produced in heavy-ion collisions. In this thesis we extend the well-established and successful zero temperature framework of Non-Relativistic (NR) Effective Field…

High Energy Physics - Phenomenology · Physics 2012-01-16 Jacopo Ghiglieri

Computer simulations with Synopsys' Sentaurus TCAD of opto-electrical characteristics of separate-confinement heterostructure laser based on AlGaAs are used as an example to study the role of the width and depth of Quantum Well (QW) active…

Materials Science · Physics 2011-12-02 Zbigniew Koziol

Motivated by a {\it mean field-like} resistive behavior in magnetic fields commonly seen in various superconducting (SC) cuprates and organics with strong fluctuation, {\it quantum} SC fluctuation effects on resistive behaviors are…

Superconductivity · Physics 2009-11-07 Ryusuke Ikeda

We calculate open heavy-flavor (HF) production in Au+Au collisions at $\sqrt{s_{\rm NN}}$=62.4 GeV utilizing a nonperturbative transport approach as previously applied in nuclear collisions at top RHIC and LHC energies. The effects of hot…

Nuclear Theory · Physics 2015-03-05 Min He , Rainer J. Fries , Ralf Rapp

We report on an effort to improve the performance of superconducting radiofrequency cavities by the use of heat treatment in a temperature range sufficient to dissociate the natural surface oxide. We find that the residual resistance is…

Accelerator Physics · Physics 2020-01-22 S. Posen , A. Romanenko , A. Grassellino , O. S. Melnychuk , D. A. Sergatskov

High frequency (hf) conductivity in the form $\sigma^{hf} = \sigma_1^{hf} - i\sigma_2^{hf}$ was obtained from the measurement of Surface Acoustic Waves (SAW) attenuation and velocity (f=30 MHz) in GaAs/AlGaAs heterostructures ($n=1.3-7\cdot…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 I. L. Drichko , A. M. Diakonov , V. D. Kagan , I. Yu. Smirnov , A. I. Toropov

The momentum diffusion coefficient for heavy quarks is studied in a deconfined gluon plasma in the static approximation by investigating a correlation function of the color electric field using Monte Carlo techniques. The diffusion…

High Energy Physics - Lattice · Physics 2013-05-30 Debasish Banerjee , Saumen Datta , Rajiv Gavai , Pushan Majumdar

We study the properties of the strongly-coupled quark-gluon plasma with a multistage model of heavy ion collisions that combines the T$_\mathrm{R}$ENTo initial condition ansatz, free-streaming, viscous relativistic hydrodynamics, and a…

The PIP II linear accelerator includes different types of niobium SRF cavities including 650 MHz elliptical low (0.61) and high (0.92) beta cavities. The elliptical cavity surface is processed with the electropolishing method. The…

Accelerator Physics · Physics 2022-08-10 V. Chouhan , D. Bice , F. Furuta , M. Martinello , M. K. Ng , H. Park , T. Ring , G. Wu , B. Guilfoyle , M. P. Kelly , T. Reid

Electrons trapped on the surface of liquid helium is an extremely clean system which holds promise for a scalable qubit platform. However, the superfluid surface is not free from fluctuations which might cause the decay and dephasing of the…

Mesoscale and Nanoscale Physics · Physics 2025-01-15 Mikhail Belianchikov , Natalia Morais , Denis Konstantinov

We present an analysis of the FUSE spectra of eight high-declination dwarf novae obtained from a Cycle 7 FUSE survey. These DN systems have not been previously studied in the UV and little is known about their white dwarfs (WDs) or…

Solar and Stellar Astrophysics · Physics 2009-08-05 P. Godon , E. M. Sion , P. E. Barrett , P. Szkody