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We study the electrical conductivity in a nodal-line semimetal with charged impurities. The screening of the Coulomb potential in this system is qualitatively different from what is found in conventional metals or semiconductors, with the…

Mesoscale and Nanoscale Physics · Physics 2017-10-18 S. V. Syzranov , B. Skinner

High electrical conductance molecular nanowires are highly desirable components for future molecular-scale circuitry, but typically molecular wires act as tunnel barriers and their conductance decays exponentially with length. Here we…

Mesoscale and Nanoscale Physics · Physics 2018-08-01 Norah Algethami , Hatef Sadeghi , Sara Sangtarash , Colin J Lambert

We report that the conductance of macroscopic multiwall nanotube (MWNT) bundles under pressure shows power laws in temperature and voltage, as corresponding to a network of bulk-bulk connected Tomonaga-Luttinger Liquids (LL). Contrary to…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 M. Monteverde , M. Nunez-Regueiro , G. Garbarino , C. Acha , X. Jing , L. Lu , Z. W. Pan , S. S. Xie , J. Souletie , R. Egger

We study nonlinear transport for two coupled one-dimensional quantum wires or carbon nanotubes described by Luttinger liquid theory. Transport properties are shown to crucially depend on the contact length $L_c$. For a special interaction…

Strongly Correlated Electrons · Physics 2009-10-31 A. Komnik , R. Egger

We demonstrate that a simple phenomenological approach can be used to simulate electronic conduction in molecular wires under thermal effects induced by the surrounding environment. This "Landauer-B\"uttiker's probe technique" can properly…

Chemical Physics · Physics 2015-08-25 Michael Kilgour , Dvira Segal

The charge transport of a (Tomonaga-)Luttinger liquid with tunnel barriers exhibits universal scaling: the current-voltage curves measured at various temperatures collapse into a single curve upon rescaling. The exponent characterizing this…

Mesoscale and Nanoscale Physics · Physics 2019-11-25 Chen-Hsuan Hsu , Peter Stano , Yosuke Sato , Sadashige Matsuo , Seigo Tarucha , Daniel Loss

The dielectric environment of thin semiconductor nanowires can affect the charge transport properties inside the wire. In this work, it is shown that Coulomb impurity scattering inside thin nanowires can be damped strongly by coating the…

Mesoscale and Nanoscale Physics · Physics 2009-06-15 Aniruddha Konar , Debdeep Jena

This paper addresses the question of whether a ``rigid molecule'' (one which does not deform in an external field) used as the conducting channel in a standard three-terminal MOSFET configuration can offer any performance advantage relative…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Prashant Damle , Titash Rakshit , Magnus Paulsson , Supriyo Datta

We present first principles calculations of current-voltage characteristics (IVC) and conductance of Au(111):S2-cumulene-S2:Au(111) molecular wire junctions with realistic contacts. The transport properties are calculated using full…

Mesoscale and Nanoscale Physics · Physics 2010-09-30 J. Prasongkit , A. Grigoriev , G. Wendin , Rajeev Ahuja

Transport through a one channel wire of length $L$ confined between two leads is examined when the 1D electron system has an energy gap $2M$: $M > T_L \equiv v_c/L$ induced by the interaction in charge mode ($v_c$: charge velocity in the…

Condensed Matter · Physics 2009-10-31 Vadim Ponomarenko , Naoto Nagaosa

We study electronic transport through a one-dimensional, finite-length quantum wire of correlated electrons (Luttinger liquid) coupled at arbitrary position via tunnel barriers to two semi-infinite, one-dimensional as well as stripe-like…

Strongly Correlated Electrons · Physics 2015-05-13 P. Wächter , V. Meden , K. Schönhammer

Electron transport characteristics through molecular wires are studied by using the Green's function formalism. Parametric calculations are performed based on the tight-binding model to investigate the transport properties through the…

Mesoscale and Nanoscale Physics · Physics 2009-11-06 Santanu K. Maiti

We study the electrical transport properties of well-contacted ballistic single-walled carbon nanotubes in a three-terminal configuration at low temperatures. We observe signatures of strong electron-electron interactions: the conductance…

Mesoscale and Nanoscale Physics · Physics 2007-07-17 Na Young Kim , Patrik Recher , William D. Oliver , Yoshihisa Yamamoto , Jing Kong , Hongjie Dai

We study the transport properties for a Luttinger-liquid (LL) quantum wire in the presence of both Rashba spin-orbit coupling (SOC) and a weak external in-plane magnetic field. The bosonized Hamiltonian of the system with an externally…

Strongly Correlated Electrons · Physics 2015-06-25 Fang Cheng , Guanghui Zhou

Measurements of conductance $G$ on short, wide, high-mobility Si-MOSFETs reveal both a two-dimensional metal-insulator transition (MIT) at moderate temperatures (1 $<~ T <$ 4~K) and mesoscopic fluctuations of the conductance at low…

Strongly Correlated Electrons · Physics 2009-10-30 K. P. Li , Dragana Popovic , S. Washburn

Electron transport through a single-level quantum dot weakly coupled to Luttinger liquid leads is considered in the master equation approach. It is shown that for a weak or moderately strong interaction the differential conductance…

Strongly Correlated Electrons · Physics 2013-02-06 G. A. Skorobagatko , I. V. Krive

In the current paper a set of experiments dedicated to investigations of local electronic transport in undoped InAs nanowires at helium temperatures in the presence of a charged atomic-force microscope tip is presented. Both nanowires…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 A. A. Zhukov , Ch. Volk , A. Winden , H. Hardtdegen , Th. Schaepers

Electron transport in a quantum wire with leads is investigated with actual Coulomb interaction taken into account. The latter includes both the direct interaction of electrons with each other and their interaction via the image charges…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 V. A. Sablikov , B. S. Shchamkhalova

We study the transport through gated GaAS:Si wires of 0.5 micrometer length in the insulating regime and observe transport via elastic tunneling at very low temperature. We describe the mean positive magnetoconductance and the mesoscopic…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 W. Poirier , D. Mailly , M. Sanquer

The temperature dependence of Coulomb blockade peaks of a one dimensional quantum dot is calculated. The Coulomb interaction is treated microscopically using the Luttinger liquid model. The electron interaction is assumed to be…

Mesoscale and Nanoscale Physics · Physics 2017-08-23 T. Kleimann , M. Sassetti , B. Kramer