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Here, we present theoretical analysis of electron transport in polyaniline based (PANi) nanofibers assuming the metalic state of the material. To build up this theory we treat conducting polymers as a special kind of granular metals, and we…

Soft Condensed Matter · Physics 2012-08-27 Natalya A. Zimbovskaya , Alan T. Johnson, , Nicholas J. Pinto

We present a review of some results concerning electronic transport properties of quasicrystals. After a short introduction to the basic concepts of quasiperiodicity, we consider the experimental transport properties of electrical…

Condensed Matter · Physics 2009-10-30 S. Roche , Guy Trambly de Laissardiere , D. Mayou

The coupling of ferroelectricity and magnetic order provides rich tunability for engineering material properties and demonstrates great potential for uncovering novel quantum phenomena and multifunctional devices. Here, we report…

Most materials in available macroscopic quantities are polycrystalline. Graphene, a recently discovered two-dimensional form of carbon with strong potential for replacing silicon in future electronics, is no exception. There is growing…

Mesoscale and Nanoscale Physics · Physics 2010-09-28 Oleg V. Yazyev , Steven G. Louie

The possibility to combine and finetune properties of functional molecular materials by chemical design is particularly relevant for organic ferroelectrics. In this work, we investigate a class of organic molecular materials that show…

Materials Science · Physics 2025-07-16 H. Mager , M. Litterst , Sophia Klubertz , S. V. Haridas , O. Shyshov , M. von Delius , M. Kemerink

The interplay between the electron transport in metal/ferroelectric/metal junctions with ultrathin ferroelectric barriers and the polarization state of a barrier is investigated. Using a model which takes into account screening of…

Other Condensed Matter · Physics 2009-11-11 M. Ye. Zhuravlev , R. F. Sabirianov , S. S. Jaswal , E. Y. Tsymbal

We present theoretical description of conduction electrons interacting with a domain wall in ferromagnetic metals. The description takes into account interaction between electrons. Within the semiclassical approximation we calculate the…

Materials Science · Physics 2009-11-07 V. K. Dugaev , J. Barnas , A. Lusakowski , L. A. Turski

The electron transport properties of hybrid ferromagnetic|normal metal structures such as multilayers and spin valves depend on the relative orientation of the magnetization direction of the ferromagnetic elements. Whereas the contrast in…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Arne Brataas , Gerrit E. W. Bauer , Paul J. Kelly

We calculate the temperature dependence of the transport properties of heavy-fermion systems such as resistivity, optical conductivity, thermoelectric power, the electronic part of the thermal conductivity, and the "figure of merit." The…

Strongly Correlated Electrons · Physics 2009-11-11 Claas Grenzebach , Frithjof B. Anders , Gerd Czycholl , Thomas Pruschke

We report results of magnetization, zero field resistivity and magnetoresistance measurements in ferromagnetic Heusler alloy Co$_2$TiSn. There is a striking change in the character of electron transport as the system undergoes the…

Materials Science · Physics 2009-11-11 S. Majumdar , M. K. Chattopadhyay , V. K. Sharma , K. J. S. Sokhey , S. B. Roy , P. Chaddah

The influence of the pore network geometry and interparticle long-distance electric coupling on the ferroelectric phase transition in small particles embedded into mesoporous matrices is considered. It was shown that the temperature of the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 E. V. Charnaya , A. L. Pirozerski , Cheng Tien , M. K. Lee

Transverse electron transport in magnetic materials - manifested in effects such as the anomalous Hall and Nernst effects - holds promise for spintronic and thermoelectric applications. While recent advances have focused on enhancing such…

Materials Science · Physics 2026-03-23 Sang J. Park , Hojun Lee , Jongjun M. Lee , Jangwoo Ha , Hyun-Woo Lee , Hyungyu Jin

Grain boundaries are commonly observed in carbon nanostructures, but their influence on thermal and electric properties are still not completely understood. Using a combined approach of density functional tight-binding theory and…

Materials Science · Physics 2015-06-30 Thomas Lehmann , Dmitry A. Ryndyk , Gianaurelio Cuniberti

We present electrical transport experiments performed on submicron hybrid devices made of a ferromagnetic conductor (Co) and a superconducting (Al) electrode. The sample was patterned in order to separate the contributions of the Co…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 M. Giroud , K. Hasselbach , H. Courtois , D. Mailly , B. Pannetier

Magnetism and transport are two key functional ingredients in modern electronic devices. In oxide heterostructures, ferroelectricity can provide a new route to control these two properties via electrical operations, which is scientifically…

Materials Science · Physics 2014-09-16 Xin Huang , Shuai Dong

We present a theoretical study of electronic and thermal transport in polycrystalline heterostructures combining graphene (G) and hexagonal boron nitride (hBN) grains of varying size and distribution. By increasing the hBN grain density…

Mesoscale and Nanoscale Physics · Physics 2025-06-06 J. E. Barrios Vargas , B. Mortazavi , A. W. Cummings , R. Martinez-Gordillo , M. Pruneda , L. Colombo , T. Rabczuk , S. Roche

Ferroelectrics feature spontaneous electric dipolar order reconfigurable via electric fields. Recent theoretical studies of the collective excitations of this electric dipolar order give rise to the hope that "ferron" quasiparticles may…

We measured thermal conductivity, k, thermoelectric power, S, and dc electric conductivity, sigma, of La_{5/8-x}Pr_{x}Ca_{3/8}MnO_{3}, showing an intricate interplay between metallic ferromagnetism (FM) and charge ordering (CO) instability.…

Strongly Correlated Electrons · Physics 2009-10-31 K. H. Kim , M. Uehara , C. Hess , P. A. Sharma , S-W. Cheong

We study the transport properties of a quasi-two-dimensional diffusive normal metal film attached to a superconductor. We demonstrate that the properties of such films can essentially differ from those of quasi-one-dimensional systems: in…

Superconductivity · Physics 2009-10-30 Frank K. Wilhelm , Andrei D. Zaikin , Herve Courtois , .

Recent advances in synthesis and electrical characterization of nanofibers and nanotubes made out of various conjugated polymers attract attention of the research community to studies of transport properties of these materials. In this work…

Mesoscale and Nanoscale Physics · Physics 2013-01-22 Natalya A. Zimbovskaya