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Related papers: Landauer-B\"uttiker-type current formula for hybri…

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We provide a unified, comprehensive treatment of all operators that contribute to the anti-ferromagnetic, ferromagnetic, and charge-density-wave structure factors and order parameters of the hexagonal Hubbard Model. We use the Hybrid Monte…

Strongly Correlated Electrons · Physics 2021-11-01 Johann Ostmeyer , Evan Berkowitz , Stefan Krieg , Timo A. Lähde , Thomas Luu , Carsten Urbach

Persistent currents in mesoscopic metallic rings induced by static magnetic fields are investigated by means of a Hamiltonian which incorporates diagonal disorder and the electron-electron interaction through a Hubbard term ($U$).…

Condensed Matter · Physics 2016-08-15 G. Chiappe , J. A. Vergés , E. Louis

We study theoretically the conductance of heterostructures with ferromagnetic conductors (F) and a two dimensional electron gas with Rashba spin-orbit interaction (R) using the Landauer-B\"{u}ttiker formalism. Assuming a one-dimensional…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Morten Hogsbro Larsen , A. Mathias Lunde , Karsten Flensberg

We theoretically study the real-space distribution of the supercurrent that flows under a uniform vector potential in a two-dimensional quasiperiodic structure. This is done by considering the attractive Hubbard model on the quasiperiodic…

Superconductivity · Physics 2023-11-23 Takumi Fukushima , Nayuta Takemori , Shiro Sakai , Masanori Ichioka , Anuradha Jagannathan

We calculate electronic charge and heat transport in tubular nanowires generated by a temperature gradient or a chemical potential bias. These nanowires correspond to semiconductor core-shell nanowires with insulating (undoped) core and…

Mesoscale and Nanoscale Physics · Physics 2023-02-06 Hadi Rezaie Heris , Kristjan Ottar Klausen , Anna Sitek , Sigurdur Ingi Erlingsson , Andrei Manolescu

We report on experimental studies of superconductor-ferromagnet layered structures. Strong oscillations of the critical supercurrent were observed with the thickness variation of the ferromagnet. Using known microscopic parameters of Ni, we…

Superconductivity · Physics 2009-11-07 Y. Blum , A. Tsukernik , M. Karpovski , A. Palevski

The Landauer-Buettiker theory of mesoscopic conductors was recently extended to nanoelectromechanical systems. In this extension, the adiabatic reaction forces exerted by the electronic degrees of freedom on the mechanical modes were…

Mesoscale and Nanoscale Physics · Physics 2012-11-21 Mark Thomas , Torsten Karzig , Silvia Viola Kusminskiy , Gergely Zarand , Felix von Oppen

We solve analytically the Kadanoff-Baym equations for a noninteracting junction connected to an arbitrary number of noninteracting wide-band terminals. The initial equilibrium state is properly described by the addition of an imaginary…

Mesoscale and Nanoscale Physics · Physics 2013-03-28 Riku Tuovinen , Robert van Leeuwen , Enrico Perfetto , Gianluca Stefanucci

We develop a scattering theory of current-induced forces exerted by the conduction electrons of a general mesoscopic conductor on slow "mechanical" degrees of freedom. Our theory describes the current-induced forces both in and out of…

Mesoscale and Nanoscale Physics · Physics 2011-07-12 Niels Bode , Silvia Viola Kusminskiy , Reinhold Egger , Felix von Oppen

The conductance of one-dimensional interacting electron systems is calculated in a manner similar to Landauer's argument for non-interacting systems. Unlike in previous studies in which the Kubo formula was used, the conductance is directly…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Akira Shimizu

We generalize the quantum waveguide approach to H\"uckel or tight-binding models relevant to unsaturated $\p$ molecular devices. A Landauer-like formula for the current density through {\em internal} bonds is also derived which allows for…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Gianluca Stefanucci , Enrico Perfetto , Stefano Bellucci , Michele Cini

We derive an effective 1D theory from the Hamiltonian of the 3D system which consists of a mesoscopic conductor and reservoirs. We assume that the many-body interaction have the same magnitude in the conductor as that in the reservoirs, in…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Akira Shimizu , Takayuki Miyadera

The coherent phenomena in mesoscopic cylindrical normal metal (N) - superconductor (S) structures have been investigated theoretically. The magnetic moment (persistent current) of such a structure has been calculated numerically and…

Superconductivity · Physics 2010-01-05 G. A. Gogadze , S. N. Dolya

The theoretical and experimental results concerning the thermodynamical and low-frequency transport properties of hybrid structures, consisting of spatially-separated conventional low-temperature superconductor (S) and ferromagnet (F), is…

Superconductivity · Physics 2010-05-11 A. Yu. Aladyshkin , A. V. Silhanek , W. Gillijns , V. V. Moshchalkov

In mesoscopic systems to study the role of inelastic scattering on the phase coherent motion of electrons two phenomenological models have been proposed. In the first one, due to B\"uttiker, one adds a voltage probe into the system (or in…

Mesoscale and Nanoscale Physics · Physics 2009-10-30 T. P. Pareek , Sandeep K. Joshi , A. M. Jayannavar

In this paper we address the topic of inelastic electron scattering in mesoscopic quantum transport. For systems where only elastic scattering is present, Landauer theory provides an adequate description of transport that relates the…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Eldon G. Emberly , George Kirczenow

In this communication we study the behaviour of spin current components in a ballistic junction consisting of two semi-infinite leads and a scattering region composed of two magnetic layers separated by a non-magnetic metallic spacer. We…

Mesoscale and Nanoscale Physics · Physics 2024-07-02 Valentin Fadeev , Andrey Umerski

Hybrid normal metal - insulator - superconductor microstructures suitable for studying an interference of electrons were fabricated. The structures consist of a superconducting loop connected to a normal metal electrode through a tunnel…

Superconductivity · Physics 2009-04-07 K. Yu. Arutyunov , T. T. Hongisto

We investigate the phononic energy transport properties of mesoscopic, suspended dielectric wires. The Landauer formula for the thermal conductance is derived and its universal aspects discussed. We then determine the variance of the energy…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 M. P. Blencowe

We considered a mesoscopic superconductor/normal metal (S/N) structure in which the N reservoirs are maintained at different temperatures. It is shown that in the absence of current between the N reservoirs a voltage difference $V_{T}$…

Superconductivity · Physics 2009-10-31 R. Seviour , A. F. Volkov