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The temperature dependence of peak widths in high resolution angle-resolved photoelectron spectroscopy from quantum well states in ultra thin Ag films on V(100) has been used to determine the electron-phonon coupling constant, lambda, for…

Strongly Correlated Electrons · Physics 2009-10-31 T. Valla , M. Kralj , A. Siber , M. Milun , P. Pervan , P. D. Johnson , D. P. Woodruff

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.…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 J. T. Karvonen , L. J. Taskinen , I. J. Maasilta

The electron-phonon coupling in potassium-doped graphene on Ir(111) is studied via the renormalization of the pi* band near the Fermi level, using angle-resolved photoemission spectroscopy. The renormalization is found to be fairly weak and…

Mesoscale and Nanoscale Physics · Physics 2010-01-26 M. Bianchi , E. D. L. Rienks , S. Lizzit , A. Baraldi , R. Balog , L. Hornekaer , Ph. Hofmann

We investigate the Fano-type line shape of the Ba mode of Y_{1-x}Ca_xBa_2Cu_3O_{6+y} films observed in Raman spectra with A_1g symmetry. The line shape is described with an extended Fano formula that allows us to obtain the bare phonon…

Superconductivity · Physics 2015-06-25 A. Bock , S. Ostertun , K. -O. Subke

We have used normal metal-insulator-superconductor tunnel junctions as thermometers at sub-Kelvin temperatures to study the electron-phonon (e-p) interaction in thin Aluminum films doped with Manganese, as a function of Manganese…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 L. J. Taskinen , I. J. Maasilta

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…

Mesoscale and Nanoscale Physics · Physics 2016-02-17 Dragos-Victor Anghel , Sergiu Cojocaru

He atom scattering has been shown to be a sensitive probe of electron-phonon interaction properties at surfaces. Here it is shown that measurements of the thermal attenuation of the specular He atom diffraction peak (the Debye-Waller…

Superconductivity · Physics 2017-12-20 G. Benedek , Salvador Miret-Artes , J. R. Manson , J. P. Toennies

The appearance of certain spectral features in one-dimensional (1D) cuprate materials has been attributed to a strong, extended attractive coupling between electrons. Here, using time-dependent density matrix renormalization group methods…

Strongly Correlated Electrons · Physics 2023-10-24 Ta Tang , Brian Moritz , Cheng Peng , Z. X. Shen , Thomas P. Devereaux

We present a first principle study of the electron-phonon (e-p) interaction at the Be(0001) surface. The real and imaginary part of the e-p self energy are calculated for the surface state in the binding energy range from the $\bar{\Gamma}$…

Materials Science · Physics 2009-11-10 A. Eiguren , S. de Gironcoli , E. V. Chulkov , P. M. Echenique , E. Tosatti

We show that thermal effects play a relevant role in the determination of the electron-phonon couplings based on the intensity of the phonon-shakeup peaks in photoemission spectra. In particular, we re-consider the determination of the…

Materials Science · Physics 2007-05-23 Andrea Bordoni , Nicola Manini

Photoemission studies of graphene have resulted in a long-standing controversy concerning the strength of the experimental electron-phonon interaction in comparison with theoretical calculations. Using high-resolution angle-resolved…

Materials Science · Physics 2015-05-30 David A. Siegel , Choongyu Hwang , Alexi V. Fedorov , Alessandra Lanzara

Recent theory has demonstrated that the value of the electron-phonon coupling strength $\lambda$ can be extracted directly from the thermal attenuation (Debye-Waller factor) of Helium atom scattering reflectivity. This theory is here…

Materials Science · Physics 2021-04-21 G. Benedek , J. R. Manson , S. Miret-Artés

We have measured shot noise in metallic single-walled carbon nanotubes of length L=1 $\mu$m and have found strong suppression of noise with increasing voltage. We conclude that the coupling of electron and phonon baths at temperatures $T_e$…

Mesoscale and Nanoscale Physics · Physics 2011-04-22 Fan Wu , Pauli Virtanen , Soren Andresen , Bernard Placais , Pertti Hakonen

Solid He is studied in the pressure and temperature ranges 1-40 TPa and 0-10,000 K using first-principles methods. Anharmonic vibrational properties are calculated within a self-consistent field framework, including the internal and free…

Materials Science · Physics 2014-02-11 Bartomeu Monserrat , N. D. Drummond , Chris J. Pickard , R. J. Needs

First-principles studies of the electron-phonon coupling in graphene predict a high coupling strength for the $\sigma$ band with $\lambda$ values of up to 0.9. Near the top of the $\sigma$ band, $\lambda$ is found to be $\approx 0.7$. This…

Mesoscale and Nanoscale Physics · Physics 2017-02-28 Federico Mazzola , Thomas Frederiksen , Thiagarajan Balasubramanian , Philip Hofmann , Bo Hellsing , Justin W. Wells

A description of electron-phonon coupling at a defect or impurity is essential to characterizing and harnessing its functionality for a particular application. Electron-phonon coupling limits the amount of useful light produced by a…

Materials Science · Physics 2026-04-21 Mark E. Turiansky , John L. Lyons

We studied experimentally the role of phonon dimensionality on electron-phonon (e-p) interaction in thin copper wires evaporated either on suspended silicon nitride membranes or on bulk substrates, at sub-Kelvin temperatures. The power…

Mesoscale and Nanoscale Physics · Physics 2007-11-26 J. T. Karvonen , I. J. Maasilta

We study the electron-phonon coupling strength near the interface of monolayer and bilayer FeSe thin films on SrTiO$_3$, BaTiO$_3$, and oxygen-vacant SrTiO$_3$ substrates, using ab initio methods. The calculated total electron-phonon…

Superconductivity · Physics 2016-05-04 Yan Wang , Andreas Linscheid , Tom Berlijn , Steve Johnston

The coupling strengths for intra- and inter-band electron-phonon pair scattering are calculated for LiFeAs. While the sum of these couplings, which gives the total electron-phonon coupling $\lambda$, is of order 0.2, we find that their…

Superconductivity · Physics 2015-06-16 R. A. Jishi , Douglas Scalapino

Following the work in graphene, we report a first-principles study of electron-phonon coupling (EPC) in low-buckled (LB) monolayer silicene and germanene. Despite of the similar honeycomb atomic arrangement and linear band dispersion, the…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Jia-An Yan , Ryan Stein , David M. Schaefer , Xiao-Qian Wang , M. Y. Chou
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