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Related papers: Hot Phonons in an Electrically Biased Graphene Con…

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We consider the nonlinear terahertz response of n-doped monolayer graphene at room temperature using a microscopic theory of carrier dynamics. Our tight-binding model treats the carrier-field interaction in the length gauge, includes phonon…

Mesoscale and Nanoscale Physics · Physics 2019-03-27 L. G. Helt , M. M. Dignam

The title compound is investigated by specific heat measurements in the normal and superconducting state supplemented by upper critical field transport, susceptibility and magnetization measurements. From a detailed analysis including also…

We present thermal measurements of large area (over $1,000$~$\mu$m$^2$) monolayer graphene samples at cryogenic temperatures to study the electron-phonon thermal conductivity of graphene. By using two large samples with areas which differ…

Mesoscale and Nanoscale Physics · Physics 2016-02-10 Christopher B. McKitterick , Michael J. Rooks , Daniel E. Prober

The search of new means of generating and controlling topological states of matter is at the front of many joint efforts, including bandgap engineering by doping and light-induced topological states. Most of our understading, however, is…

Mesoscale and Nanoscale Physics · Physics 2018-07-19 Hernan L. Calvo , Javier S. Luna , Virginia Dal Lago , Luis E. F. Foa Torres

We theoretically consider, comparing with the existing experimental literature, the electrical conductivity of gated monolayer graphene as a function of carrier density, temperature, and disorder in order to assess the prospects of…

Mesoscale and Nanoscale Physics · Physics 2013-01-28 S. Das Sarma , E. H. Hwang

Since their discovery, graphene-based systems represent an exceptional playground to explore the emergence of peculiar quantum effects. The present paper focuses on the anomalous appearence of strong infrared phonon resonances in the…

Mesoscale and Nanoscale Physics · Physics 2012-10-04 E. Cappelluti , L. Benfatto , M. Manzardo , A. B. Kuzmenko

In a two-dimensional electron gas, the electron-electron interaction generally becomes stronger at lower carrier densities and renormalizes the Fermi liquid parameters such as the effective mass of carriers. We combine experiment and theory…

Mesoscale and Nanoscale Physics · Physics 2016-11-03 J. Li , L. Z. Tan , K. Zou , A. A. Stabile , D. J. Seiwell , K. Watanabe , T. Taniguchi , Steven G. Louie , J. Zhu

Using spectral energy density method, we predict the phonon scattering mean lifetimes of polycrystalline graphene (PC-G) having polycrystallinity only along $\rm{x}$-axis with seven different misorientation (tilt) angles at room…

Materials Science · Physics 2024-09-10 Kunwar Abhikeern , Amit Singh

Due to its exceptional electronic and thermal properties, graphene is a key material for bolometry, calorimetry, and photon detection. However, despite graphene's relatively simple electronic structure, the physical processes responsible…

Twisted bilayer graphene (tBLG) has emerged as an exciting platform for novel condensed matter physics. However, electron-phonon ($e$-ph) interactions in tBLG and their effects on electronic transport are not completely understood. Here we…

Materials Science · Physics 2024-03-01 Shiyuan Gao , Jin-Jian Zhou , Yao Luo , Marco Bernardi

We develop the theory of heat conductivity in supported graphene, accounting for coherent phonon scattering on disorder induced by an amorphous substrate. We derive spectra for in-plane and out-of-plane phonons in the framework of Green's…

Mesoscale and Nanoscale Physics · Physics 2017-03-03 Sergei Koniakhin , Oleg Utesov , Ivan Terterov , Anton Nalitov

We review thermal properties of graphene and few-layer graphene, and discuss applications of these materials in thermal management of advanced electronics. The intrinsic thermal conductivity of graphene - among the highest of known…

Mesoscale and Nanoscale Physics · Physics 2015-08-11 Zhong Yan , Denis L. Nika , Alexander A. Balandin

We investigated experimentally the high-temperature electrical resistance of graphene interconnects. The test structures were fabricated using the focused ion beam from the single and bi-layer graphene produced by mechanical exfoliation. It…

Materials Science · Physics 2008-05-24 Q. Shao , G. Liu , D. Teweldebrhan , A. A. Balandin

Spin-phonon interactions are one of the mechanisms limiting the lifetime of spin qubits made in semiconductor quantum dots. At variance with other mechanisms such as charge noise, phonons are intrinsic to the device and can hardly be…

Mesoscale and Nanoscale Physics · Physics 2020-08-19 Jing Li , Benjamin Venitucci , Yann-Michel Niquet

Collisions between electrons and holes can dominate the carrier scattering in clean graphene samples in the vicinity of charge neutrality point. While electron-hole limited resistance in pristine gapless graphene is well-studied, its…

Mesoscale and Nanoscale Physics · Physics 2024-11-22 Arseny Gribachov , Vladimir Vyurkov , Dmitry Svintsov

The effects of surface polar phonons on electronic transport properties of monolayer graphene are studied by using a Monte Carlo simulation. Specifically, the low-field electron mobility and saturation velocity are examined for different…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 X. Li , E. A. Barry , J. M. Zavada , M. Buongiorno Nardelli , K. W. Kim

Interaction between electron and acoustic phonon in an in-plane magnetic field induced gapped quantum wire with Rashba spin-orbit interaction is studied. We calculate acoustic phonon limited resistivity ($\rho$) and phonon-drag thermopower…

Mesoscale and Nanoscale Physics · Physics 2015-01-07 Tutul Biswas , Tarun Kanti Ghosh

Fast carrier cooling is important for high power graphene based devices. Strongly Coupled Optical Phonons (SCOPs) play a major role in the relaxation of photoexcited carriers in graphene. Heterostructures of graphene and hexagonal boron…

Mesoscale and Nanoscale Physics · Physics 2017-04-21 Dheeraj Golla , Alexandra Brasington , Brian J. LeRoy , Arvinder Sandhu

The equilibrium optical phonons of graphene are well characterized in terms of anharmonicity and electron-phonon interactions, however their non-equilibrium properties in the presence of hot charge carriers are still not fully explored.…

Mesoscale and Nanoscale Physics · Physics 2018-02-15 C. Ferrante , A. Virga , L. Benfatto , M. Martinati , D. De Fazio , U. Sassi , C. Fasolato , A. K. Ott , P. Postorino , D. Yoon , G. Cerullo , F. Mauri , A. C. Ferrari , T. Scopigno

Using electrical transport experiments and shot noise thermometry, we find strong evidence that "supercollision" scattering processes by flexural modes are the dominant electron-phonon energy transfer mechanism in high-quality, suspended…

Mesoscale and Nanoscale Physics · Physics 2015-11-02 Antti Laitinen , Mika Oksanen , Aurélien Fay , Daniel Cox , Matti Tomi , Pauli Virtanen , Pertti Hakonen
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