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Recent progress in the development of high-power mid-IR laser sources and the exciting laser driven physical phenomena associated with the irradiation of solids via ultrashort laser pulses in that spectral region are aimed to potentially…

Optics · Physics 2023-08-25 George D. Tsibidis , Emmanuel Stratakis

This work focuses on the characterization of various bulk silicon (Si) samples using Fourier Transform InfraRed (FTIR) and grating spectrometers in order to get them suitable for applications in astronomy. Different samples at different…

Materials Science · Physics 2018-08-21 B. Uzakbaiuly , D. B. Tanner , J. Ge , J. Degallaix , A. S. Markosyan

Order parameter fluctuations for the two dimensional Ising model in the region of the critical temperature are presented. A locus of temperatures T*(L) and of magnetic fields B*(L) are identified, for which the probability density function…

Statistical Mechanics · Physics 2009-11-10 Maxime Clusel , Jean-Yves Fortin , Peter C. W. Holdsworth

We describe the method allowing quantitative interpretation of absorptive images of mixtures of BEC and thermal atoms which reduces possible systematic errors associated with evaluation of the contribution of each fraction. By using known…

Other Condensed Matter · Physics 2015-05-13 J. Szczepkowski , R. Gartman , M. Witkowski , L. Tracewski , M. Zawada , W. Gawlik

The temperature dependence of a system exhibiting a `metal-insulator transition in two dimensions at zero magnetic field' (MIT) is studied up to 90K. Using a classical scattering model we are able to simulate the non-monotonic temperature…

Strongly Correlated Electrons · Physics 2015-06-24 V. Senz , T. Ihn , T. Heinzel , K. Ensslin , G. Dehlinger , D. Grützmacher , U. Gennser , E. H. Hwang , S. Das Sarma

Measuring the temperature structure of the solar atmosphere is critical to understanding how it is heated to high temperatures. Unfortunately, the temperature of the upper atmosphere cannot be observed directly, but must be inferred from…

Solar and Stellar Astrophysics · Physics 2017-03-08 Harry P. Warren , Jeff M. Byers , Nicholas A. Crump

Active feedback cooling of levitated dielectric particles is a pivotal technique for creating ultrasensitive sensors and probing fundamental physics. Here we demonstrate phase-adaptive feedback cooling of silica nanoparticles optically…

The temperature dependence of the steady-state fluorescence spectrum of anthracene crystals range from 300K to 500K had been investigated, which was in the temperature range of most tabletop laser-driven shock wave experiments. The…

Applied Physics · Physics 2019-08-06 Cheng Tang , Xiaojun Zhu , Yunfei Song , Weilong Liu , Qingxin Yang , Zhe lv , Yanqiang Yang

We investigate the effects of the adiabatic loading of optical lattices to the temperature by applying the mean-field approximation to the three-dimensional Bose-Hubbard model at finite temperatures. We compute the lattice-height dependence…

Other Condensed Matter · Physics 2009-11-13 S. Yoshimura , S. Konabe , T. Nikuni

The spin Seebeck effect (SSE) has generated interest in the thermoelectric and magnetic communities for potential high efficiency energy harvesting applications, and spintronic communities as a source of pure spin current. To understand the…

Mesoscale and Nanoscale Physics · Physics 2020-07-28 G. Venkat , C. D. W. Cox , A. Sola , V. Basso , K. Morrison

Bismuth selenide, a benchmark topological insulator, grows in a trigonal structure at ambient conditions and exhibits a number of enticing properties related to the formation of Dirac surface states. Besides this polytype, a metastable…

We present a numerical simulation study of the density-dependence (rho = 2.2 - 4.0 g/cm^3) of the high-energy collective dynamics in vitreous silica at mesoscopic wavevectors (Q = 1 - 18 nm^-1). The density-dependence of the longitudinal…

Disordered Systems and Neural Networks · Physics 2007-05-23 O. Pilla , S. Caponi , A. Fontana , M. Montagna , F. Rossi , G. Viliani , L. Angelani , G. Ruocco , G. Monaco , F. Sette

The temperature dependence of the frequency dispersion in the sound velocity and damping of vitreous silica is reanalyzed. Thermally activated relaxation accounts for the sound attenuation observed above 10 K at sonic and ultrasonic…

Disordered Systems and Neural Networks · Physics 2009-11-11 R. Vacher , E. Courtens , M. Foret

Active thermal control is crucial in achieving the required accuracy and throughput in many industrial applications, e.g., in the medical industry, high-power lighting industry, and semiconductor industry. Thermoelectric Modules (TEMs) can…

Systems and Control · Electrical Eng. & Systems 2020-06-19 Enzo Evers , Rens Slenders , Rob van Gils , Tom Oomen

Foot temperature profiling is of utmost importance is mitigating the adverse effects due to foot complications especially due to diabetes. Contactless temperature monitoring methods could be used effectively in large scale for patient…

Signal Processing · Electrical Eng. & Systems 2019-01-18 K. C. M. Madarasingha , W. N. D. Perera , A. M. A. I. Rathnayaka , H. P. Savindu , S. Jayasinghe , K. T. D. Kahaduwa , A. C. De Silva

A coherent Ising machine (CIM) is known to deliver the low-energy states of the Ising model. Here, we investigate how well the CIM simulates the thermodynamic properties of a two-dimensional square-lattice Ising model. Assuming that the…

Finite-size scaling (FSS) of the five-dimensional (d=5) Ising model is investigated numerically. Because of the hyperscaling violation in d>4, FSS of the d=5 Ising model no longer obeys the conventional scaling relation. Rather, it is…

Statistical Mechanics · Physics 2015-06-25 Yoshihiro Nishiyama

Lead sulfide is an important semiconductor that has found technological applications for over a century. Raman spectroscopy, a standard tool for the investigation and characterization of semiconductors, has limited application to this…

Materials Science · Physics 2015-05-13 P. G. Etchegoin , M. Cardona , R. Lauck , R. J. H. Clark , J. Serrano , A. H. Romero

The interplay of Anderson localization and electron-electron interactions is known to lead to enhancement of superconductivity due to multifractality of electron wave functions. We develop the theory of multifractally-enhanced…

Superconductivity · Physics 2022-11-23 E. S. Andriyakhina , I. S. Burmistrov

In this paper we present the temperature-dependent emissivity of a silicon sample, estimated from its cool-down curve in a constant low temperature environment ($\approx$ 82K). The emissivity value follow a linear dependency in the 120-260…

Instrumentation and Detectors · Physics 2021-03-03 Marcio Constancio , Rana X. Adhikari , Odylio D. Aguiar , Koji Arai , Aaron Markowitz , Marcos A. Okada , Chris C. Wipf