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We report low temperature transport measurements on suspended single walled carbon nanotubes (both individual tubes and ropes). The technique we have developed, where tubes are soldered on low resistive metallic contacts across a slit,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. Kasumov , M. Kociak , M. Ferrier , R. Deblock , S. Gueron , B. Reulet , I. Khodos , O. Stephan , H. Bouchiat

Superconducting materials hold great potential to bring radical changes for electric power and high-field magnet technology , enabling high-efficiency electric power generation, high-capacity lossless electric power transmission, small…

Superconductivity · Physics 2021-06-08 Chao Yao , Yanwei Ma

In this article we shortly review previous and recently published experimental results that provide evidence for intrinsic, magnetic-impurity-free ferromagnetism and for high-temperature superconductivity in carbon-based materials. The…

Materials Science · Physics 2015-06-25 Y. Kopelevich , P. Esquinazi

We present a model which provides a plausible explanation of the effect of zero-resistance and zero-conductance states in two-dimensional electron systems subjected to a magnetic field and irradiated with microwaves observed in a number of…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 V. Ryzhii , A. Chaplik , R. Suris

Cuprate superconductors have many different atoms per unit cell. A large fraction of cells (5-25%) must be modified ("doped") before the material superconducts. Thus it is not surprising that there is little consensus on the superconducting…

Superconductivity · Physics 2013-07-10 Jamil Tahir-Kheli

We study the interplay between disorder and superconductivity in a rope of metallic carbon nanotubes. Based on the time dependent Ginzburg Landau theory, we derive the superconducting transition temperature T$_c$ taking into account the…

Superconductivity · Physics 2015-05-14 Besma Bellafi , Sonia Haddad , Samia Charfi-Kaddour

The quantum vacuum may become an electromagnetic superconductor in the presence of a strong external magnetic field of the order of 10^{16} Tesla. The magnetic field of the required strength (and even stronger) is expected to be generated…

High Energy Physics - Phenomenology · Physics 2015-06-11 M. N. Chernodub

In this work, a question is tackled concerning the formation of a superconducting condensate in an earlier proposed model of "elastic jelly", in which phonons of the ion system play the part of initiating ones. It was shown that in…

Superconductivity · Physics 2007-05-23 I. M. Yurin , V. B. Kalinin

The mean inner potential of a solid is known to be proportional to its diamagnetic susceptibility. Superconductors exhibit giant diamagnetism. What does this say about the connection between superconductivity and mean inner potential?…

Superconductivity · Physics 2014-02-03 J. E. Hirsch

A new, theoretical approach to macroscopic quantum coherence and superconductivity in the p-type (hole doped) cuprates is proposed. The theory includes mechanisms to account for e-pair coupling in the superconducting and pseudogap phases…

Superconductivity · Physics 2015-06-11 Philip Turner , Laurent Nottale

A brief review of the nanoscale free-electron model of metal nanowires is presented. This continuum description of metal nanostructures allows for a unified treatment of cohesive and conducting properties. Conductance channels act as…

Mesoscale and Nanoscale Physics · Physics 2010-06-22 D. F. Urban , J. Bürki , C. A. Stafford , Hermann Grabert

The non-perturbation theory of electronic dynamic conductivity for open two-barrier resonance tunnel structure is established for the first time within the model of rectangular potentials and different effective masses of electrons in the…

Mesoscale and Nanoscale Physics · Physics 2012-02-22 M. V. Tkach , Ju. O. Seti , O. M. Voitsekhivska

While it is known that the amplification of the superconducting critical temperature Tc is possible in a system of multiple electronic components in comparison with a single component system, many different road maps for room temperature…

A central challenge in nanoscale superconductivity is to understand and exploit the combined action of quantum confinement and proximity effects in experimentally realistic metallic heterostructures. We theoretically investigate…

Superconductivity · Physics 2026-03-27 Giovanni A. Ummarino , Alessio Zaccone

We consider a thin normal metal sandwiched between two ferromagnetic insulators. At the interfaces, the exchange coupling causes electrons within the metal to interact with magnons in the insulators. This electron-magnon interaction induces…

Mesoscale and Nanoscale Physics · Physics 2018-03-07 Niklas Rohling , Eirik Løhaugen Fjærbu , Arne Brataas

We consider wires near a zero temperature transition between superconducting and metallic states. The critical theory obeys hyperscaling, which leads to a universal frequency, temperature, and length dependence of the conductance; quantum…

Superconductivity · Physics 2007-05-23 Subir Sachdev , Philipp Werner , Matthias Troyer

We study the conductance of a junction between the normal and superconducting segments of a nanowire, both of which are subjected to spin-orbit coupling and an external magnetic field. We directly compare the transport properties of the…

Mesoscale and Nanoscale Physics · Physics 2017-06-01 Christopher Reeg , Dmitrii L. Maslov

Motivated by a recent controversy on a possible quantum phase in thin films of relatively clean superconductors under an out-of-plane magnetic field, the quantum fluctuation effects on the phase diagram and the resistivity are reexamined.…

Superconductivity · Physics 2023-08-09 Naratip Nunchot , Ryusuke Ikeda

Author offers and researches a new idea - filling tubes by electronic gases. He shows: If the insulating envelope (cover) of the tube is charged positively, the electrons within the tube are not attracted to covering. Tube (as a whole)…

General Physics · Physics 2008-05-05 Alexander Bolonkin

We explore the physical properties of a unified microscopic theory for the coexistence of superconductivity and charge density waves in two-dimensional transition metal dichalcogenides. In the case of particle-hole symmetry the elementary…

Superconductivity · Physics 2009-11-10 B. Uchoa , G. G. Cabrera , A. H. Castro Neto