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Collinear antiferromagnets with nonrelativistic spin-split bands and no net magnetization, called altermagnets, show interesting transport properties due to their unique band structure. We here compute the linear response optical…

Mesoscale and Nanoscale Physics · Physics 2026-02-10 Erik Wegner Hodt , Alireza Qaiumzadeh , Jacob Linder

We investigate the interplay of the electron-phonon and the spin fluctuation interaction for the superconducting state of YBa$_2$Cu$_3$O$_{7}$. The spin fluctuations are described within the nearly antiferromagnetic Fermi liquid theory,…

Superconductivity · Physics 2009-10-31 T. S. Nunner , J. Schmalian , K. H. Bennemann

We present a joint experiment-theory study on the role of fluorine adatoms in spin and momentum scattering of charge carriers in dilute fluorinated graphene and bilayer graphene. The experimental spin-flip and momentum scattering rates and…

Mesoscale and Nanoscale Physics · Physics 2019-07-24 Susanne Wellnhofer , Adam Stabile , Denis Kochan , Martin Gmitra , Ya-Wen Chuang , Jun Zhu , Jaroslav Fabian

In metals in the vicinity of a polar transition, interactions between electrons and soft phonon modes remain to be determined. Here we explore the consequences of spin-orbit assisted electron-phonon coupling on the collective modes of such…

Strongly Correlated Electrons · Physics 2023-12-27 Abhishek Kumar , Premala Chandra , Pavel A. Volkov

We investigate the role played by the electron spin and the spin-orbit interaction on the exceptional electronphonon coupling at the Tl/Si(111) surface. Our first-principles calculations demonstrate that the particular spin pattern of this…

Mesoscale and Nanoscale Physics · Physics 2018-05-23 Peio Garcia-Goiricelaya , Idoia G. Gurtubay , Asier Eiguren

Electron spin relaxation in graphene on a substrate is investigated from the fully microscopic kinetic spin Bloch equation approach. All the relevant scatterings, such as the electron-impurity, electron--acoustic-phonon,…

Materials Science · Physics 2010-08-06 Y. Zhou , M. W. Wu

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

We calculate the lattice phonons and the electron-phonon coupling of the organic superconductor \kappa-(BEDT-TTF)_2 I_3, reproducing all available experimental data connected to phonon dynamics. Low-frequency intra-molecular vibrations are…

Properties of graphene plasmons are greatly affected by their coupling to phonons. While such coupling has been routinely observed in both near-field and far-field graphene spectroscopy, the interplay between coupling strength and mode…

Mesoscale and Nanoscale Physics · Physics 2026-04-08 Sang Hyun Park , Shengxuan Xia , Sang-Hyun Oh , Phaedon Avouris , Tony Low

Hydrogen adatoms and other species covalently bound to graphene act as resonant scattering centers affecting the electronic transport properties and inducing Anderson localization. We show that attractive interactions between adatoms on…

Mesoscale and Nanoscale Physics · Physics 2014-12-11 Fernando Gargiulo , Gabriel Autès , Naunidh Virk , Stefan Barthel , Malte Rösner , Lisa R. M. Toller , Tim O. Wehling , Oleg V. Yazyev

With its central role in conventional BCS superconductivity, electron-phonon coupling has appeared to play a more subtle role in the phase diagram of the high temperature superconducting cuprates. The added complexity of the cuprates with…

Strongly Correlated Electrons · Physics 2010-05-07 D. R. Garcia , A. Lanzara

The role of electron-phonon interactions is experimentally and theoretically investigated near the saddle point absorption peak of graphene. The differential optical transmission spectra of multiple, non-interacting layers of graphene…

In graphene moir\'e superlattices, electronic interactions between layers are mostly hidden as band structures get crowded because of folding, making their interpretation cumbersome. Here, the evolution of the electronic band structure as a…

Mesoscale and Nanoscale Physics · Physics 2021-09-01 Francisco Sanchez-Ochoa , Andres Botello-Mendez , Cecilia Noguez

A unified theoretical treatment is presented to describe the physics of electron dynamics in semiconductor and graphene systems. Electron spin fast alignment with the Zeeman magnetic field (physical or effective) is treated as a form of…

Quantum Physics · Physics 2015-05-13 S. G. Tan , M. B. A. Jalil , Takashi Fujita

The interaction of electron-hole pairs with lattice vibrations exhibits a wealth of intriguing physical phenomena. The Kohn anomaly is a renowned example where electron-phonon coupling leads to non-analytic phonon dispersion at specific…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Jun Yan , Erik A. Henriksen , Philip Kim , Aron Pinczuk

The decoration of graphene samples with adatoms or nanoparticles leads to the enhancement of spin-orbit interactions as well as to the introduction of symmetry-breaking effects that could have drastic effects on spin and electronic…

Mesoscale and Nanoscale Physics · Physics 2015-04-13 Mahmoud M. Asmar , Sergio E. Ulloa

We investigate the spin diffusion and transport in a graphene monolayer on SiO$_2$ substrate by means of the microscopic kinetic spin Bloch equation approach. The substrate causes a strong Rashba spin-orbit coupling field $\sim 0.15$ meV,…

Mesoscale and Nanoscale Physics · Physics 2011-07-07 P. Zhang , M. W. Wu

To investigate the possibility whether electron-phonon coupling can enhance orbital fluctuations in iron-based superconductors, we develop an ab initio method to construct the effective low-energy models including the phonon-related terms.…

Superconductivity · Physics 2014-01-20 Yusuke Nomura , Kazuma Nakamura , Ryotaro Arita

We study the small-polaron problem of a single electron interacting with the lattice for the Holstein model in the adiabatic limit on a comb lattice, when the electron-phonon interaction acts only on the base sites. The ground state…

Strongly Correlated Electrons · Physics 2007-08-07 Ilaria Meccoli , Massimo Capone

Spin-orbit coupling (SOC) can provide essential tools to manipulate electron spins in two-dimensional materials like graphene, which is of great interest for both fundamental physics and spintronics application. In this paper, we report the…

Mesoscale and Nanoscale Physics · Physics 2021-10-12 Shimin Cao , Chuanwu Cao , Shibing Tian , Jian-Hao Chen