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相关论文: Spin blockade in a charge-switchable molecular mag…

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Control over quantum systems is typically achieved by time-dependent electric or magnetic fields. Alternatively, electronic spins can be controlled by spin-polarized currents. Here we demonstrate coherent driving of a single spin by a…

介观与纳米尺度物理 · 物理学 2024-06-26 Stepan Kovarik , Richard Schlitz , Aishwarya Vishwakarma , Dominic Ruckert , Pietro Gambardella , Sebastian Stepanow

We study the switching behavior of two spin-crossover molecules residing in a nanojunction device consisting of two closely spaced gold electrodes. The spin states are monitored through a real-time measurement of the resistance of the…

介观与纳米尺度物理 · 物理学 2021-09-29 Philipp Stegmann , Alex Gee , Neil T. Kemp , Jürgen König

We present a theory of a single-electron transistor exchange-coupled to a localized spin. We show how to gain detailed quantitative knowledge about the attached spin such as spin size, exchange coupling strength, Land\'e g-factor, and spin…

介观与纳米尺度物理 · 物理学 2009-10-14 Gerold Kiesslich , Gernot Schaller , Clive Emary , Tobias Brandes

In semiconductor nanostructures, spin blockade (SB) is the most scalable mechanism for electrical spin readout, requiring only two bound spins for its implementation. In conjunction with charge sensing techniques, SB has led to…

Electron transport through a three-electrode triple-quantum-dot ring with the source electrode of spin-dependent splitting of chemical potentials (spin bias) is theoretically investigated. We find clear charge and spin currents in the drain…

介观与纳米尺度物理 · 物理学 2009-09-24 Weijiang Gong , Xuefeng Xie , Yu Han , Guozhu Wei

The single-spin memory effect is considered within a minimal polaron model describing a single-level quantum dot interacting with a vibron and weakly coupled to ferromagnetic leads. We show that in the case of strong electron-vibron and…

介观与纳米尺度物理 · 物理学 2015-05-13 Dmitry A. Ryndyk , Pino D'Amico , Klaus Richter

Spin dependent single electron tunneling in a ferromagnetic double junction is investigated theoretically in the limit of incoherent sequential tunneling. The junction consists of a small nonmagnetic metallic grain with discrete energy…

介观与纳米尺度物理 · 物理学 2007-05-23 G. Michalek , J. Martinek , J. Barnas , B. R. Bulka

Spin-bearing molecules can be stabilized on surfaces and in junctions with desirable properties such as a net spin that can be adjusted by external stimuli. Using scanning probes, initial and final spin states can be deduced from…

介观与纳米尺度物理 · 物理学 2016-12-16 Peter Jacobson , Matthias Muenks , Gennadii Laskin , Oleg O. Brovko , Valeri S. Stepanyuk , Markus Ternes , Klaus Kern

We derive the effective charge- and current-density operators for the strong-coupling limit of a single-band Mott insulator in the presence of spin-orbit coupling and show that the spin-orbit contribution to the effective charge density…

强关联电子 · 物理学 2015-06-23 Shan Zhu , You-Quan Li , Cristian D. Batista

We present results of spin-unrestricted first-principles quantum transport for a gated C$_{60}$ molecule weakly contacted to Al electrodes, making emphasis on the role played by the electronic localization and the spin degree of freedom. As…

材料科学 · 物理学 2007-05-23 J. J. Palacios

Molecular spintronics is made possible by the coupling between electronic configuration and magnetic po- larization of the molecules. For control and application of the individual molecular states it is necessary to both read and write…

介观与纳米尺度物理 · 物理学 2016-04-27 T. Saygun , J. Bylin , H. Hammar , J. Fransson

We present transport measurements on a lateral double dot produced by combining local anodic oxidation and electron beam lithography. We investigate the tunability of our device and demonstrate, that we can switch between capacitive and…

介观与纳米尺度物理 · 物理学 2007-05-23 M. C. Rogge , C. Fuhner , U. F. Keyser , R. J. Haug

We review studies on spin-dependent tunneling phenomena in systems containing ferromagnetic nanoparticles. We discuss preparation methods of assembling nanoparticles as well as the mechanisms and results of spin-dependent transport…

材料科学 · 物理学 2007-09-20 Kay Yakushiji , Franck Ernult , Seiji Mitani , Koki Takanashi , Hiroyasu Fujimori

We examine spin-dependent displacement of a single electron, resulting in separation and relocation of the electron wavefunction components, and thus charge parts, corresponding to opposite spins. This separation is induced by a pulse of an…

介观与纳米尺度物理 · 物理学 2018-09-26 J. Pawłowski , G. Skowron , M. Górski , S. Bednarek

Inefficient screening of electric fields in nanoconductors makes electric manipulation of electronic transport in nanodevices possible. Accordingly, electrostatic (charge) gating is routinely used to affect and control the Coulomb…

介观与纳米尺度物理 · 物理学 2015-07-22 R. I. Shekhter , M. Jonson

We present theoretical evidence, based on total-energy first-principles calculations, of the existence of spin-polarized states well localized at and extended along the edges of bare zigzag boron nitride nanoribbons. Our calculations…

材料科学 · 物理学 2015-05-13 Veronica Barone , Juan E. Peralta

We study the nonequilibrium spin transport through a quantum dot containing two spin levels coupled to the magnetic electrodes. A formula for the spin-dependent current is obtained and is applied to discuss the linear conductance and…

介观与纳米尺度物理 · 物理学 2009-11-07 Ping Zhang , Qi-Kun Xue , Yu-Peng Wang , X. C. Xie

Single particle interference lies at the heart of quantum mechanics. The archetypal double-slit experiment has been repeated with electrons in vacuum up to the more massive $C_{60}$ molecules. Mesoscopic rings threaded by a magnetic flux…

介观与纳米尺度物理 · 物理学 2015-05-13 Andrea Donarini , Georg Begemann , Milena Grifoni

Low-temperature three-terminal transport measurements through a thiol end-capped Pi -conjugated molecule have been carried out. Electronic excitations, including zero and finite-bias Kondo-effects have been observed and studied as a…

Electronic transport through a single-molecule magnet Mn$_{12}$ in a two-terminal set up is calculated using the non-equilibrium Green's function method in conjunction with density-functional theory. A single-molecule magnet Mn$_{12}$ is…

材料科学 · 物理学 2010-01-28 Salvador Barraza-Lopez , Kyungwha Park , Víctor García-Suárez , Jaime Ferrer