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相关论文: Electron dephasing in homogeneous and inhomogeneou…

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We have measured the low-field magnetoresistances (MRs) of a series of Sn-doped indium oxide thick films in the temperature $T$ range 4--35 K. The electron dephasing rate $1/\tau_{\varphi}$ as a function of $T$ for each film was extracted…

介观与纳米尺度物理 · 物理学 2013-09-10 Yu-Jie Zhang , Zhi-Qing Li , Juhn-Jong Lin

In three dimensional (3D) disordered metals, the electron-phonon (\emph{e}-ph) scattering is the sole significant inelastic process. Thus the theoretical predication concerning the electron-electron (\emph{e}-\emph{e}) scattering rate…

介观与纳米尺度物理 · 物理学 2016-06-22 Yang Yang , Xin-Dian Liu , Zhi-Qing Li

We report on the inelastic-scattering rate of electrons on phonons and relaxation of electron energy studied by means of magnetoconductance, and photoresponse, respectively, in a series of strongly disordered superconducting NbN films. The…

We investigate electron transport and phase-breaking processes in thin titanium nitride (TiN) films of epitaxial quality. Previous studies show that a minute surface magnetic disorder significantly reduces the critical temperature…

The analysis of quantum corrections to magnetoconductivity of thin Au films responsible for by the effect of weak electron localization has made it possible to determine the temperature dependences of electron phase relaxation time in the…

无序系统与神经网络 · 物理学 2009-10-31 B. I. Belevtsev , Yu. F. Komnik , E. Yu. Beliayev

We report the observation of strong electron dephasing in a series of disordered Cu$_{93}$Ge$_4$Au$_3$ thin films. A very short electron dephasing time possessing very weak temperature dependence around 6 K, followed by an upturn with…

介观与纳米尺度物理 · 物理学 2011-11-10 S. M. Huang , T. C. Lee , H. Akimoto , K. Kono , J. J. Lin

We present a theoretical study of electron-phonon scattering effects in thin films made of a strong topological insulator. Phonons are modelled by isotropic elastic continuum theory with stress-free boundary conditions, and the interaction…

介观与纳米尺度物理 · 物理学 2012-01-26 Sébastien Giraud , Arijit Kundu , Reinhold Egger

Study of the dephasing in electronic systems is not only important for probing the nature of their ground states, but also crucial to harnessing the quantum coherence for information processing. In contrast to well-studied conventional…

介观与纳米尺度物理 · 物理学 2017-07-14 Jian Liao , Yunbo Ou , Haiwen Liu , Ke He , Xucun Ma , Qi-Kun Xue , Yongqing Li

We consider the deformation potential mechanism of the electron-phonon coupling in metal films and investigate the intensity of the associated heat transfer between the electron and phonon subsystems. The focus is on the temperature region…

介观与纳米尺度物理 · 物理学 2016-03-31 S. Cojocaru , D. V. Anghel

We study the electron-phonon relaxation in the model of a granular metal film, where the grains are formed by regularly arranged potential barriers of arbitrary transparency. The relaxation rate of Debye acoustic phonons is calculated,…

介观与纳米尺度物理 · 物理学 2023-11-15 Nikolai A. Stepanov , Mikhail A. Skvortsov

We analyze current-voltage characteristics taken on Au-doped indium-oxide films. By fitting a scaling function to the data, we extract the electron-phonon scattering rate as function of temperature, which yields a quadratic dependence of…

无序系统与神经网络 · 物理学 2009-11-11 Roy Ceder , Oded Agam , Zvi Ovadyahu

Ever since the first discoveries of the quantum-interference transport in mesoscopic systems, the electron dephasing times, $\tau_\phi$, in the concentrated AuPd alloys have been extensively measured. The samples were made from different…

介观与纳米尺度物理 · 物理学 2007-11-14 J. J. Lin , T. C. Lee , S. W. Wang

We report on the direct measurement of the electron-phonon relaxation time, {\tau}eph, in disordered TiN films. Measured values of {\tau}eph are from 5.5 ns to 88 ns in the 4.2 to 1.7 K temperature range and consistent with a T-3…

We have measured directly the thermal conductance between electrons and phonons in ultra-thin Hf and Ti films at millikelvin temperatures. The experimental data indicate that electron-phonon coupling in these films is significantly…

无序系统与神经网络 · 物理学 2009-11-07 M. E. Gershenson , D. Gong , T. Sato , B. S. Karasik , A. V. Sergeev

We analyze the heat power $P$ between electrons and phonons in thin metallic films deposited on free-standing dielectric membranes in a temperature range in which the phonon gas has a quasi two-dimensional distribution. The quantization of…

介观与纳米尺度物理 · 物理学 2016-02-17 Dragos-Victor Anghel , Sergiu Cojocaru

Utilizing time-resolved Kerr rotation techniques, we have investigated the spin dynamics of a high mobility, low density two dimensional electron gas in a GaAs/Al0:35Ga0:65As heterostructure in dependence on temperature from 1.5 K to 30 K.…

其他凝聚态物理 · 物理学 2009-11-13 X. Z. Ruan , H. H. Luo , Yang Ji , Z. Y. Xu , V. Umansky

This work reports on the first-time study of the temperature-dependent behavior of the Lorenz number of bio-supported average 3.2 nm-thin Ir film down to 10 K. Due to the strong imperfection-electron scattering, a very large residual…

介观与纳米尺度物理 · 物理学 2014-11-07 Zhe Cheng , Zaoli Xu , Shen Xu , Xinwei Wang , Yuanyuan Wang

We have studied the electron-phonon (e-p) interaction in thin Cu and Au films at sub-Kelvin temperatures with the help of the hot electron effect, using symmetric normal metal-insulator-superconductor tunnel junction pairs as thermometers.…

介观与纳米尺度物理 · 物理学 2015-06-24 J. T. Karvonen , L. J. Taskinen , I. J. Maasilta

By studying the temperature-dependent behavior of electron thermal conductivity (k) in a 3.2 nm-thin film, we quantify the extremely confined defect-electron scattering and reveal the intrinsic phonon-electron scattering that is shared by…

介观与纳米尺度物理 · 物理学 2015-01-16 Zhe Cheng , Zaoli Xu , Shen Xu , Xinwei Wang

Both the semi-classical and quantum transport properties of F-doped SnO$_2$ thick films ($\sim$1\,$\mu$m) were investigated experimentally. It is found that the resistivity caused by the thermal phonons obeys Bloch-Gr\"{u}neisen law from…

材料科学 · 物理学 2014-08-06 Wen-Jing Lang , Zhi-Qing Li
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