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The study of electron transport through single molecules is essential to the development of molecular electronics. Indeed, trends in electronic conductance through organic nanowires have emerged with the increasing reliability of electron…

Mesoscale and Nanoscale Physics · Physics 2007-05-24 Jordan R. Quinn , Frank W. Foss , Latha Venkataraman , Mark S. Hybertsen , Ronald Breslow

The present paper gives an elaborate theoretical description of a new molecular charge transport mechanism applying to a single molecule trapped between two macroscopic electrodes in a solid state device. It is shown by a Hubbard type model…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Per Hedegard , Thomas Bjornholm

We report a detailed theoretical study of the bonding and conduction properties of an hydrogen molecule joining either platinum or palladium electrodes. We show that an atomic arrangement where the molecule is placed perpendicular to the…

Materials Science · Physics 2007-05-23 V. M. Garcia-Suarez , A. R. Rocha , S. W. Bailey , C. J. Lambert , S. Sanvito , J. Ferrer

An application of the general equation obtained in Part I to low critical temperature superconductors utilizing an "ad hoc" phononic theory is developed. Then, we arrive to a specific expression for the bounding energy as a function of…

Superconductivity · Physics 2007-05-23 R. Riera , J. L. Marin , R. Betancourt-Riera , R. Rosas

The phenomenon of the glass transition is an unresolved problem of condensed matter physics. Its prominent feature, the super-Arrhenius temperature dependence of the transport coefficients remains a challenge to be described over the full…

Soft Condensed Matter · Physics 2015-06-04 B. Schmidtke , N. Petzold , R. Kahlau , M. Hofmann , E. A. Rossler

The transition mechanism in high temperature cuprate superconductors is an outstanding puzzle. A previous suggestion on the role of non-linear local lattice instability modes on the microscopic pairing mechanism in high temperature cuprate…

Superconductivity · Physics 2017-03-09 B. S. Lee , T. L. Yoon , R. Abd-Shukor

The temperature dependence of both components of the resistivity tensor $\varrho_{xx}(T)$ and $\varrho_{xy}(T)$ has been studied at T $\geq$ 4.2 K within IQHE plateaux around filling factors \nu=2 and \nu=4 of medium- -mobility GaAs/AlGaAs…

Mesoscale and Nanoscale Physics · Physics 2009-10-28 P. Svoboda , G. Nachtwei , C. Breitlow , S. Heide , M. Cukr

Experimental observations suggest that proteins follow different pathways under different environmental conditions. We perform molecular dynamics simulations of a model of the SH3 domain over a broad range of temperatures, and identify…

Biological Physics · Physics 2009-11-10 J. M. Borreguero , F. Ding , S. V. Buldyrev , H. E. Stanley , N. V. Dokholyan

We use the quasiclassical theory of superconductivity to calculate the electronic contribution to the thermal conductivity. The theory is formulated for low temperatures when heat transport is limited by electron scattering from random…

Condensed Matter · Physics 2009-10-28 M. J. Graf , S. -K. Yip , J. A. Sauls , D. Rainer

It is well known that electron-electron interaction in disordered systems leads to logarithmically divergent Altshuler-Aronov corrections to conductivity at low temperatures ($T\tau\ll 1$; $\tau$ is the elastic mean-free time). This paper…

Condensed Matter · Physics 2009-11-07 Gabor Zala , B. N. Narozhny , I. L. Aleiner

In isolated nonlinear optical waveguide arrays with bounded energy spectrum, simultaneous conservation of energy and power of the optical modes enables study of coupled thermal and particle transport in the negative temperature regime.…

Mesoscale and Nanoscale Physics · Physics 2023-08-01 Meng Lian , Yin-Jie Chen , Yue Geng , Yun-Tian Chen , Jing-Tao Lü

Energy-transport equations for the transport of fermions in optical lattices are formally derived from a Boltzmann transport equation with a periodic lattice potential in the diffusive limit. The limit model possesses a formal gradient-flow…

Analysis of PDEs · Mathematics 2017-04-11 Marcel Braukhoff , Ansgar Jüngel

The electronic conductance of a molecule making contact to electrodes is determined by the coupling of discrete molecular states to the continuum electrode density of states. Interactions between bound states and continua can be modeled…

Other Condensed Matter · Physics 2007-05-23 Thomas M. Henderson , Giorgos Fagas , Eoin Hyde , James C. Greer

The presence of strong disorder can significantly impact electrical conduction in metallic systems. Here, we investigate the temperature dependence of the electrical resistivity, $\rho(T)$, in nonmagnetic single crystals of the…

Materials Science · Physics 2026-02-27 Juliana Gonçalves Dias , Shyam Sundar , Leticie Mendonça-Ferreira , Marcos A. Avila

Motivated by the observation of superconductivity in SrTiO$_3$ and Bi, we analyze phonon-mediated superconductivity in three-dimensional systems at low carrier density, when the chemical potential $\mu$ (equal to Fermi energy at $T=0$) is…

Superconductivity · Physics 2019-04-02 Maria N. Gastiasoro , Andrey V. Chubukov , Rafael M. Fernandes

We utilize terahertz time domain spectroscopy to investigate thin films of the heavy fermion compound SmB6, a prototype Kondo insulator. Temperature dependent terahertz (THz) conductivity measurements reveal a rapid decrease in the Drude…

Strongly Correlated Electrons · Physics 2018-04-16 Jingdi Zhang , Jie Yong , Ichiro Takeuchi , Richard L. Greene , Richard D. Averitt

We study the energy transport between two interacting spin chains which are initially separated, held at different temperatures and subsequently put in contact. We consider the spin-1/2 XXZ model in the gapless regime and exploit its…

Statistical Mechanics · Physics 2014-10-15 Andrea De Luca , Jacopo Viti , Leonardo Mazza , Davide Rossini

Management of heat during charging and discharging of Li-ion batteries is critical for their safety, reliability, and performance. Understanding the thermal conductivity of the materials comprising batteries is crucial for controlling the…

Materials Science · Physics 2021-03-17 Zhe Cheng , Beniamin Zahiri , Xiaoyang Ji , Chen Chen , Darshan Chalise , Paul V. Braun , David G. Cahill

We outline a general approach to the computation of transport properties of interacting systems at low temperetures and frequencies. We show that if the fixed point and the irrelevant operators around it are known, then by studying the…

Strongly Correlated Electrons · Physics 2009-11-10 Natan Andrei , Efrat Shimshoni , Achim Rosch

The binary polyhydrides of heavy rare earth lutetium that shares a similar valence electron configuration to lanthanum have been experimentally discovered to be superconductive. The lutetium polyhydrides were successfully synthesized at…