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A finite thermal anisotropy, if maintained for times longer than thermal relaxation times, may have a positive effect on the critical temperature in Bose-Einstein condensation of a dilute boson gas not in thermal equilibrium or…

统计力学 · 物理学 2021-02-16 R. A. Treumann , W. Baumjohann

By analyzing the in-plane field magnetoconductivity, zero field transport, and thermodynamic spin magnetization in 2D correlated electron system in high mobility Si-MOS samples, we have revealed a novel high energy scale $T^*$, beyond the…

强关联电子 · 物理学 2015-06-25 L. A. Morgun , A. Yu. Kuntsevich , V. M. Pudalov

To explain the properties of the local galaxy population, theoretical models require active galactic nuclei (AGN) to inject energy into host galaxies, thereby expelling outflows of gas that would otherwise form stars. Observational tests of…

The critical electron density for the metal-insulator transition in a two-dimensional electron gas can be determined by two distinct methods: (i) a sign change of the temperature derivative of the resistance, and (ii) vanishing activation…

强关联电子 · 物理学 2007-05-23 A. A. Shashkin , S. V. Kravchenko , T. M. Klapwijk

We study the effect of electron-electron interaction on the one-particle density of states (\emph{DOS}) $\rho^{(d)}(\epsilon,T)$ of low-dimensional disordered metals near Fermi energy within the framework of the finite temperature…

强关联电子 · 物理学 2015-05-14 E. Sasioglu , S. Caliskan , M. Kumru

The temperature dependence of the charge carrier density, mobility and Seebeck coefficient of melt-grown, bulk ZnGa2O4 single crystals was measured between 10 K and 310 K. The electrical conductivity at room temperature is about s = 286…

材料科学 · 物理学 2020-05-07 Johannes Boy , Martin Handwerg , Rüdiger Mitdank , Zbigniew Galazka , Saskia F. Fischer

The low-temperature dc mobility of the two-dimensional electron system localized above the surface of superfluid helium is determined by the slowest stage of the longitudinal momentum transfer to the bulk liquid, namely, by the interaction…

其他凝聚态物理 · 物理学 2015-05-18 A. I. Safonov , I. I. Safonova , S. S. Demukh

The effect of an electric field on the spatial charge and spin profiles of photoelectrons in p+-GaAs is studied as a function of lattice and electron temperature. The charge and spin mobilities of photoelectrons are equal in all conditions…

介观与纳米尺度物理 · 物理学 2015-06-09 F. Cadiz , D. Paget , A. C. H. Rowe , E. Peytavit , S. Arscott

Instead of normal non-Arrhenius relationship, the carrier mobility $ln({\mu})$ v.s. $1/T^2$ showed abnormal dependence in an MEH-PPV / InP nanocrystal composite system that a critical temperature $(T_c)$ behavior is prominent in temperature…

介观与纳米尺度物理 · 物理学 2013-10-22 Yating Zhang , Jianquan Yao , Hoi Sing Kwok

Electron-ion interactions play a central role for the energy relaxation processes and ultra-fast structure dynamics in laser-heated matter. The accurate prediction of the electron-ion energy exchange in a transient excited two-temperature…

其他凝聚态物理 · 物理学 2024-01-17 Jia Zhang , Rui Qin , Wenjun Zhu , Jan Vorberger

Electron spectrum of 2D and 3D antiferromagnetic metals is calculated with account of spin-fluctuation corrections within perturbation theory in the s-f exchange model. Effects of the interaction of conduction electrons with spin waves in…

强关联电子 · 物理学 2009-10-31 V. Yu. Irkhin , M. I. Katsnelson

For several decades now, ultra-high-mobility GaAs two-dimensional electron systems (2DESs) have served as the hallmark platform for various branches of research in condensed matter physics. Fundamental to this long-standing history of…

介观与纳米尺度物理 · 物理学 2022-08-26 Yoon Jang Chung , A. Gupta , K. W. Baldwin , K. W. West , M. Shayegan , L. N. Pfeiffer

Recent thermodynamic measurements on two-dimensional (2D) electron systems have found diverging behavior in the magnetic susceptibility and appearance of ferromagnetism with decreasing electron density. The critical densities for these…

强关联电子 · 物理学 2007-05-23 S. M. Fazeli , K. Esfarjani , B. Tanatar

The collision cross sections (CCS), momentum transfer cross sections (MTCS), or scattering cross sections (SCS) of an electron neutral pair are important components for computing the electric conductivity of a plasma gas. Larger collision…

等离子体物理 · 物理学 2023-10-18 Osama A. Marzouk

We study transport phenomena cross-correlated among the heat and electric currents of magnons and Dirac electrons on the surface of ferromagnetic topological insulators. For a perpendicular magnetization, we calculate magnon- (electron-)…

介观与纳米尺度物理 · 物理学 2018-07-23 Yusuke Imai , Hiroshi Kohno

Direct electronic structure measurements of a variety of the colossal magnetoresistive oxides show the presence of a pseudogap at the Fermi energy E_F which drastically suppresses the electron spectral function at E_F. The pseudogap is a…

强关联电子 · 物理学 2016-08-31 T. Saitoh , D. S. Dessau , Y. Moritomo , T. Kimura , Y. Tokura , N. Hamada

We present a theory of the DC electron transport in insulators near Anderson-Mott transitions under the influence of coexisting electron correlation and randomness. At sufficiently low temperatures, the DC electron transport in…

强关联电子 · 物理学 2010-10-26 Hiroshi Shinaoka , Masatoshi Imada

We report on results of nonequilibrium transport measurements made on thin films of germanium-telluride (Ge_xTe) at cryogenic temperatures. Owing to a rather large deviation from stoichiometry (app. 10% of Ge vacancies), these films exhibit…

无序系统与神经网络 · 物理学 2017-02-17 Z. Ovadyahu

The electron temperature is a crucial parameter for the determination of the gas-phase metallicity of galaxies. Low electron temperature is expected for metal-rich galaxies, theoretically. We report the discovery that temperature, as…

星系天体物理 · 物理学 2026-03-06 Ziming Peng , Renbin Yan , Zesen Lin , Xihan Ji , Man-Yin Leo Lee , Yuguang Chen

We report on our recent study of equilibrium thermodynamic observables in SU(N) gauge theories with N=3, 4, 5, 6 and 8 colors at temperatures T in the range from 0.8 T_c to 3.4 T_c (where T_c denotes the critical deconfinement temperature).…

高能物理 - 格点 · 物理学 2010-11-05 Marco Panero