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相关论文: Reconstruction of the Electron-Phonon Interaction …

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We review investigations of the electron-phonon interaction (EPI) in metal diborides MeB_2 (Me=Zr, Nb, Ta, Mg) by point-contact (PC) spectroscopy. For transition metal compounds the PC EPI functions were recovered and EPI parameter…

We present high-resolution angle-resolved photoemission spectroscopy study in conjunction with first principles calculations to investigate how the interaction of electrons with phonons in graphene is modified by the presence of Yb. We find…

We present a computational protocol, based on density matrix perturbation theory, to obtain non-adiabatic, frequency-dependent electron-phonon self-energies for molecules and solids. Our approach enables the evaluation of electron-phonon…

材料科学 · 物理学 2023-05-09 Han Yang , Marco Govoni , Arpan Kundu , Giulia Galli

The monolayer of black phosphorous, or phosphorene, has recently emerged as a new 2D semiconductor with intriguing highly anisotropic transport properties. Existing calculations of its intrinsic phonon-limited electronic transport…

材料科学 · 物理学 2015-06-24 Bolin Liao , Jiawei Zhou , Bo Qiu , Mildred S. Dresselhaus , Gang Chen

Neutron resonance spin-echo spectroscopy was used to monitor the temperature evolution of the linewidths of transverse acoustic phonons in lead across the superconducting transition temperature, $T_c$, over an extended range of the…

超导电性 · 物理学 2009-11-11 T. Keller , P. Aynajian , K. Habicht , L. Boeri , S. K. Bose , B. Keimer

The superconducting instability of the Fermi liquid state is investigated by considering anisotropic electron-boson couplings. Both electron-electron interactions and anisotropic electron-boson couplings are treated with a…

强关联电子 · 物理学 2009-06-12 Rafael Roldan , Shan-Wen Tsai , M. Pilar Lopez-Sancho

The strong coupling Eliashberg theory plus vertex correction is used to calculate maps of transition temperature (Tc) in parameter-space characterizing superconductivity. Based on these Tc maps, crossover behaviors are found when…

超导电性 · 物理学 2010-03-31 W. Fan

The adiabatic Born-Oppenheimer approximation is considered to be a robust approach that very rarely breaks down. Consequently, it is predominantly utilized to address various electron-phonon properties in condensed matter physics. By…

超导电性 · 物理学 2023-03-01 Nina Girotto , Dino Novko

We study the role of the superconducting proximity effect on the electron-phonon energy exchange in diffusive normal metals (N) attached to superconductors (S). The proximity effect modifies the spectral response of the normal metal, in…

介观与纳米尺度物理 · 物理学 2009-03-16 T. T. Heikkila , F. Giazotto

We report tunneling measurements of the electron-phonon (e-ph) interaction in superconducting MgB$_2$ using the MgB$_2$-I-Nb junctions, where I stands for insulator. The phonon structure in tunneling density of states in MgB$_2$ clearly…

超导电性 · 物理学 2007-05-23 A. I. D'yachenko , V. Yu. Tarenkov , A. V. Abal'oshev , S. J. Lewandowski

We use the renormalization group method to examine the effect of phonon mediated interaction on d-wave superconductivity, as driven by spin fluctuations in a quasi-one-dimensional electron system. The influence of a tight-binding…

强关联电子 · 物理学 2014-09-15 Hassan Bakrim , Claude Bourbonnais

Interactions between mesoscopic devices induced by interface acoustic phonons propagating in the plane of a two-dimensional electron system (2DES) are investigated by phonon-spectroscopy. In our experiments ballistic electrons injected from…

介观与纳米尺度物理 · 物理学 2015-05-13 G. J. Schinner , H. P. Tranitz , W. Wegscheider , J. P. Kotthaus , S. Ludwig

We report an inelastic neutron scattering investigation of phonons with energies up to 159 meV in the conventional superconductor YNi$_2$B$_2$C. Using the SWEEP mode, a newly developed time-of-flight technique involving the continuous…

The relaxation of electrons in quantum dots via phonon emission is hindered by the discrete nature of the dot levels (phonon bottleneck). In order to clarify the issue theoretically we consider a system of $N$ discrete fermionic states (dot…

介观与纳米尺度物理 · 物理学 2009-11-11 T. Stauber , R. Zimmermann , H. Castella

Including the effect of lattice anharmonicity on electron-phonon interactions has recently garnered attention due to its role as a necessary and significant component in explaining various phenomena, including superconductivity, optical…

In strong-coupling superconductors with a short electron mean free path the self-energy effects in the superconducting order parameter play a major role in the phonon manifestation of the point-contact spectra at the above-gap energies. We…

超导电性 · 物理学 2007-05-23 I. K. Yanson , S. I. Beloborod'ko , Yu. G. Naidyuk , O. V. Dolgov , A. A. Golubov

We investigate an exact nonequilibrium solution of a two-site electron-phonon model, where an infrared-active phonon that is nonlinearly coupled to the electrons is driven by a laser field. The time-resolved electronic spectrum shows…

强关联电子 · 物理学 2017-05-10 M. A. Sentef

Negative refraction of coherent phonons is crucial for thermal management and quantum information processing, but it remains unrealized because achieving the suitable dispersion for negative refraction simultaneously with long-range…

介观与纳米尺度物理 · 物理学 2025-11-06 Hao Chen , Zhong-Ke Ding , Nannan Luo , Jiang Zeng , Li-Ming Tang , Ke-Qiu Chen

This article reviews the theory of electron-phonon interactions in solids from the point of view of ab-initio calculations. While the electron-phonon interaction has been studied for almost a century, predictive non-empirical calculations…

材料科学 · 物理学 2017-03-08 Feliciano Giustino

Direct detection of superconductivity has long been a key strength of point-contact Andreev reflection. However, its applicability to atomic-scale imaging is limited by the mechanical contact of the Andreev probe. To this end, we present a…

超导电性 · 物理学 2024-04-23 Wonhee Ko , Jose L. Lado , Petro Maksymovych