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The thermoelectric properties of distorted bismuth (110) layer are investigated using first-principles calculations combined with the Boltzmann transport equation for both electrons and phonons. To accurately predict the electronic and…

Mesoscale and Nanoscale Physics · Physics 2016-06-07 L. Cheng , H. J. Liu , J. Zhang , J. Wei , J. H. Liang , P. H. Jiang , D. D. Fan , L. Sun , J. Shi

Normally, understanding the temperature dependent transport properties of strongly correlated electron systems remains challenging task due to complex electronic structure and its variations (around E$_{F}$) with temperature. Here, we…

Strongly Correlated Electrons · Physics 2017-03-21 Saurabh Singh , Devendra Kumar , Sudhir K. Pandey

Phosphorene, the single- or few-layer form of black phosphorus, was recently rediscovered as a twodimensional layered material holding great promise for applications in electronics and optoelectronics. Research into its fundamental…

Materials Science · Physics 2015-06-19 Liangzhi Kou , Changfeng Chen , Sean C. Smith

We calculate an electron-phonon scattering and intrinsic transport properties of black phosphorus monolayer using tight-binding and Boltzmann treatments as a function of temperature, carrier density, and electric field. The low-field…

Mesoscale and Nanoscale Physics · Physics 2017-04-12 Yuri Trushkov , Vasili Perebeinos

We investigate the thermopower of single molecules weakly coupled to metallic leads. We model the molecule in terms of the relevant electronic orbitals coupled to phonons corresponding to both internal vibrations and to oscillations of the…

Mesoscale and Nanoscale Physics · Physics 2009-09-29 Jens Koch , Felix von Oppen , Yuval Oreg , Eran Sela

Thin layers of black phosphorus have recently raised interest for their two-dimensional (2D) semiconducting properties, such as tunable direct bandgap and high carrier mobilities. This lamellar crystal of P atoms stacked together by weak…

Mesoscale and Nanoscale Physics · Physics 2014-08-22 A. Favron , E. Gaufrès , F. Fossard , P. L. Lévesque , A-L. Phaneuf-L'Heureux , N. Y-W. Tang , A. Loiseau , R. Leonelli , S. Francoeur , R. Martel

This paper reports thermopower and conductivity measurements through the metal-insulator transition for 2-dimensional electron gases in high mobility Si-MOSFETs. At low temperatures both thermopower and conductivity show critical behaviour…

Strongly Correlated Electrons · Physics 2009-11-07 R. Fletcher , V. M. Pudalov , A. D. B. Radcliffe , C. Possanzini

We discuss gamma-ray bursts that have very hard spectra, consistent with black-body radiation, throughout their duration. We find that the temperature decay during a pulse can be well described by a broken power-law in time, with an…

Astrophysics · Physics 2009-11-10 Felix Ryde

Considering screeening of electron scattering interactions in terms of the finite-temperature STLS theory and solving the linearized Boltzmann equation (with no appeal to a relaxation time approximation), we present a theoretical analysis…

Materials Science · Physics 2011-06-08 S. Y. Liu , X. L. Lei , Norman J. M. Horing

We purpose an approach for the thermodynamic analysis of rotating and non-linear magnetic-charged black hole with quintessence. Accordingly, we compute various thermodynamics quantities of the black hole, such as mass, temperature,…

General Relativity and Quantum Cosmology · Physics 2019-12-02 Ragil Tsafack Ndongmo , Saleh Mahamat , Thomas Bouetou Bouetou , Timoleon Crepin Kofane

As technology scales down, the static power is expected to become a significant fraction of the total power. The exponential dependence of static power with the operating temperature makes the thermal profile estimation of high-performance…

Hardware Architecture · Computer Science 2011-11-09 J. L. Rossello , V. Canals , S. A. Bota , A. Keshavarzi , J. Segura

This letter reports thermopower and conductivity measurements through the metal-insulator transition for 2-dimensional electron gases in high mobility Si-MOSFET's. At low temperatures both thermopower and conductivity show critical behavior…

Disordered Systems and Neural Networks · Physics 2007-05-23 R. Fletcher , V. M. Pudalov , A. D. B. Radcliffe , C. Possanzini

In this study, a newly pillared black phosphorene hybrid nanostructures (PBP) is constructed with its thermal stability as well as thermal conductivity are studied by performing equilibrium molecular dynamics simulation (EMD). The results…

Mesoscale and Nanoscale Physics · Physics 2020-10-23 Jiaxin Wu , Suxin Chen , Changpeng Chen , Yihan Ma , Yongshang Tian

The incorporation of electrically tunable materials into photonic structures such as waveguides and metasurfaces enables dynamic control of light propagation by an applied potential. While many materials have been shown to exhibit…

Mesoscale and Nanoscale Physics · Physics 2017-10-03 Michelle C. Sherrott , William S. Whitney , Deep Jariwala , Cora M. Went , Joeson Wong , George R. Rossman , Harry A. Atwater

Induced thermal scattering power thresholds have been calculated as a function of size and laser pump frequency. The thermal coupling coefficients of morphology dependent resonances were estimated by asymptotic methods. The resulting power…

Optics · Physics 2007-11-15 M. V. Jouravlev

A material with reversible temperature change capability under an external electric field, known as the electrocaloric effect (ECE), has long been considered as a promising solid-state cooling solution. However, electrocaloric (EC)…

The temperature distribution inside a double-cladding optical fiber laser or amplifier is examined in detail. Traditionally, the quantum defect in the core is taken to be the main source of heating in an active optical fiber. However,…

Applied Physics · Physics 2020-06-24 Arash Mafi

We report a comprehensive Raman study of the phonon behaviour in PdSe$_2$ in the temperature range of 5 K to 300 K. A remarkable change in the Raman spectrum is observed at 120 K: a significant enhancement of the out-of-plane phonon…

Understanding heating and cooling mechanisms in mesoscopic superconductor-semiconductor hybrid devices is crucial for their application in quantum technologies. Owing to the poor thermal conductivity of typical devices, heating effects can…

Mesoscale and Nanoscale Physics · Physics 2024-06-12 Angel Ibabe , Gorm O. Steffensen , Ignacio Casal , Mario Gomez , Thomas Kanne , Jesper Nygard , Alfredo Levy Yeyati , Eduardo J. H. Lee

The paper describes the realization process of the high frequency power standard based on a twin broadband microcalorimeter designed for effective efficiency measurement of coaxial power sensors with indirect heating thermocouples. The…

Instrumentation and Detectors · Physics 2021-03-09 Emil Vremera , Luciano Brunetti , Luca Oberto , Marco Sellone