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Separate spin evolution quantum hydrodynamics is generalized to include the Coulomb exchange interaction. The Coulomb exchange interaction is considered as the interaction between the spin-down electrons being in the quantum states occupied…

等离子体物理 · 物理学 2016-02-01 Pavel A. Andreev

The rapidly rising fields of spintronics and quantum information science have led to a strong interest in developing the ability to coherently manipulate electron spins. Electron spin resonance (ESR) is a powerful technique to manipulate…

材料科学 · 物理学 2009-11-13 M. Pioro-Ladriere , T. Obata , Y. Tokura , Y. -S. Shin , T. Kubo , K. Yoshida , T. Taniyama , S. Tarucha

Micromagnetic calculations demonstrate a peculiar evolution of non-axisymmetric skyrmions driven by an applied magnetic field in confined helimagnets with longitudinal modulations. We argue that these specific solitonic states can be…

介观与纳米尺度物理 · 物理学 2016-11-23 A. O. Leonov , J. C. Loudon , A. N. Bogdanov

Measuring single-electron charge is one of the most fundamental quantum technologies. Charge sensing, which is an ingredient for the measurement of single spins or single photons, has been already developed for semiconductor gate-defined…

介观与纳米尺度物理 · 物理学 2018-12-10 Haruki Kiyama , Alexander Korsch , Naomi Nagai , Yasushi Kanai , Kazuhiko Matsumoto , Kazuhiko Hirakawa , Akira Oiwa

By first lithographically fabricating contact electrodes and then as last step growing carbon nanotubes with chemical vapour deposition across the ready-made chip, many potential contamination mechanisms for nanotube devices can be avoided.…

介观与纳米尺度物理 · 物理学 2011-10-26 A. K. Huettel , H. B. Meerwaldt , G. A. Steele , M. Poot , B. Witkamp , L. P. Kouwenhoven , H. S. J. van der Zant

We report a successful measurement of the magnetic field-induced spin singlet-triplet transition in silicon-based coupled dot systems. Our specific experimental scheme incorporates a lateral gate-controlled Coulomb-blockaded structure in Si…

介观与纳米尺度物理 · 物理学 2007-05-23 S. D. Lee , S. J. Kim , J. S. Kang , Y. B. Cho , J. B. Choi , Sooa Park , S. -R. Eric Yang , S. J. Lee , T. H. Zyung

We study the electronic transport through a noncollinear single-electron spin-valve transistor. It consists of a small metallic island weakly coupled to two ferromagnetic leads with noncollinear magnetization directions. The electric…

介观与纳米尺度物理 · 物理学 2011-12-13 Stephan Lindebaum , Jürgen König

We demonstrate single electron addition to different strands of a carbon nanotube rope. Anticrossings of anomalous conductance peaks occur in quantum transport measurements through the parallel quantum dots forming on the individual…

介观与纳米尺度物理 · 物理学 2011-08-02 Karin Goß , Sebastian Smerat , Martin Leijnse , Maarten R. Wegewijs , Claus M. Schneider , Carola Meyer

Spin-based electronics or spintronics relies on the ability to store, transport and manipulate electron spin polarization with great precision. In its ultimate limit, information is stored in the spin state of a single electron, at which…

Magnetic switching of a single-molecule magnet (SMM) due to spin-polarized current is investigated theoretically. The charge transfer between the electrodes takes place via the lowest unoccupied molecular orbital (LUMO) of the SMM.…

介观与纳米尺度物理 · 物理学 2007-08-29 Maciej Misiorny , Józef Barnas

We theoretically study the single electron transfer through two-terminal quantum ring capacitively coupled to charged dot placed in its center. For this purpose we solve time-dependent Schrodinger equation for fully correlated two-particle…

介观与纳米尺度物理 · 物理学 2015-05-18 T. Chwiej , K. Kutorasinski

The ultimate goal of spintronics is achieving electrically controlled coherent manipulation of the electron spin at room temperature to enable devices such as spin field-effect transistors. With conventional materials, coherent spin…

介观与纳米尺度物理 · 物理学 2024-11-01 Josep Ingla-Aynés , Franz Herling , Jaroslav Fabian , Luis E. Hueso , Fèlix Casanova

A single-electron tunneling (SET) device with a nanoscale central island that can move with respect to the bulk source- and drain electrodes allows for a nanoelectromechanical (NEM) coupling between the electrical current through the device…

介观与纳米尺度物理 · 物理学 2013-04-29 R. I. Shekhter , L. Y. Gorelik , I. V. Krive , M. N. Kiselev , A. V. Parafilo , M. Jonson

Manipulation of the spin-states of a quantum dot by purely electrical means is a highly desirable property of fundamental importance for the development of spintronic devices such as spin-filters, spin-transistors and single-spin memory as…

介观与纳米尺度物理 · 物理学 2008-10-20 J. R. Hauptmann , J. Paaske , P. E. Lindelof

An impressive success of spintronic applications has been typically realized in metal-based structures which utilize magnetoresistive effects for substantial improvements in the performance of computer hard drives and magnetic random access…

其他凝聚态物理 · 物理学 2009-11-13 Igor Zutic , Jaroslav Fabian , Steven C. Erwin

We study magneto-electric properties of single electron traps in metal-oxide-semiconductor field effect transistors. Using a microscopic description of the system based on the single-site Anderson-Holstein model, we derive an effective low…

介观与纳米尺度物理 · 物理学 2009-11-10 I. Martin , D. Mozyrsky

Selected problems of fundamental importance for spintronics and spin-polarized transport are reviewed, some of them with a special emphasis on their applications in quantum computing and coherent control of quantum dynamics. The role of the…

介观与纳米尺度物理 · 物理学 2009-10-31 S. Das Sarma , Jaroslav Fabian , Xuedong Hu , Igor Zutic

We have measured quantum transport through an individual Fe$_4$ single-molecule magnet embedded in a three-terminal device geometry. The characteristic zero-field splittings of adjacent charge states and their magnetic field evolution are…

We optically probe and electrically control a single artificial molecule containing a well defined number of electrons. Charge and spin dependent inter-dot quantum couplings are probed optically by adding a single electron-hole pair and…

介观与纳米尺度物理 · 物理学 2007-05-23 H. J. Krenner , E. C. Clark , T. Nakaoka , M. Bichler , C. Scheurer , G. Abstreiter , J. J. Finley

Spintronics is a field of electronics based on using the electron spin instead of its charge. The recent advance in the manipulation of pure spin currents, i.e. angular momentum transfer not associated to conventional charge currents, has…