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The problem of a magnetic impurity, atomic or molecular, absorbed on top of a carbon atom in otherwise clean graphene is studied using the numerical renormalization group. The spectral, thermodynamic, and scattering properties of the…

强关联电子 · 物理学 2009-01-27 P. S. Cornaglia , Gonzalo Usaj , C. A. Balseiro

We show that ionization of noble gas atoms by strong infrared circularly polarized laser field under standard exerimental conditions can yield electrons with up to 100% spin polarization in energy resolved measurements. Spin polarization…

原子物理 · 物理学 2013-07-18 Ingo Barth , Olga Smirnova

We report on the observation of spontaneously drifting coupled spin and quadrupolar density waves in the ground state of laser driven Rubidium atoms. These laser-cooled atomic ensembles exhibit spontaneous magnetism via light mediated…

量子物理 · 物理学 2024-02-28 G. Labeyrie , J. G. M. Walker , G. R. M. Robb , R. Kaiser , T. Ackemann

It is shown that spin Hall effect creates uniform spin polarization of electrons in semiconductor with a linear in the momentum spin splitting of conduction band. In turn, the profile of the non-uniform spin polarization accumulated at the…

介观与纳米尺度物理 · 物理学 2007-05-23 V. L. Korenev

We study spin polarization in a split-gate quantum wire focussing on the effect of a realistic smooth potential due to remote donors. Electron interaction and spin effects are included within the density functional theory in the local spin…

介观与纳米尺度物理 · 物理学 2008-04-04 M. Evaldsson , S. Ihnatsenka , I. V. Zozoulenko

As a fundamental property of the electron, the spin plays a decisive role in the electronic structure of matter from solids to molecules and atoms, e.g. causing magnetism. Yet, despite its importance, the spin dynamics of electrons released…

Quantum states induced by single-atomic impurities are at the frontier of physics and material science. While such states have been reported in high-temperature superconductors and dilute magnetic semiconductors, they are unexplored in…

We discuss transport through an interferometer formed by helical edge states of the quantum spin Hall insulator. Focusing on effects induced by a strong magnetic impurity placed in one of the arms of interferometer, we consider the…

介观与纳米尺度物理 · 物理学 2021-03-31 R. A. Niyazov , D. N. Aristov , V. Yu. Kachorovskii

Magnetic impurities adsorbed on graphene are coupled magnetically via the itinerant electrons. This interaction opens a gap in the band structure of graphene. The result strongly depends on how the magnetic impurities are distributed. While…

强关联电子 · 物理学 2010-10-05 Maria Daghofer , Nan Zheng , Adriana Moreo

Spontaneous nuclear polarization is predicted in double quantum dots in the spin-blocked electron transport regime. The polarization results from an instability of the zero-polarization state when singlet and triplet electron energy levels…

介观与纳米尺度物理 · 物理学 2010-08-23 M. S. Rudner , L. S. Levitov

The theoretical possibility to use an electron microscope as a spin polarizer is studied. It turns out that a Bessel beam passing a standard magnetic objective lens is intrinsically spin polarized. In the limit of infinitely small detectors…

量子物理 · 物理学 2015-12-08 Peter Schattschneider , Vincenzo Grillo

In order to clarify the mechanism of spin polarization in potassium-loaded zeolite A, we perform {\em ab initio} density-functional calculations. We find that (i) the system comprising only non-magnetic elements (Al, Si, O and K) can indeed…

强关联电子 · 物理学 2009-12-30 Yoshiro Nohara , Kazuma Nakamura , Ryotaro Arita

We introduce an integrable model of spin-polarized interacting electrons subject to a spin-conserving spin-orbit interaction. Using Bethe Ansatz and conformal field theory we calculate the exact large-time single-electron and density…

强关联电子 · 物理学 2014-06-03 A. A. Zvyagin , H. Johannesson

The exchange interaction between electrons located at different randomly distributed impurities is studied for small density of impurities. The singlet-triplet splitting 2J(R) is calculated for two Coulomb centers at a distance R.…

强关联电子 · 物理学 2007-05-23 I. V. Ponomarev , V. V. Flambaum , A. L. Efros

A novel method invented to measure the minute thermodynamic spin magnetization of dilute two dimensional fermions is applied to electrons in a silicon inversion layer. Interplay between the ferromagnetic interaction and disorder enhances…

介观与纳米尺度物理 · 物理学 2009-11-07 O. Prus , Y. Yaish , M. Reznikov , U. Sivan , V. Pudalov

The total energy of a quasi-one-dimensional electron system is calculated using density functional theory. It is shown that spontaneous ferromagnetic state in quantum wire occurs at low one-dimensional electron density. The critical…

介观与纳米尺度物理 · 物理学 2013-01-14 A. A. Vasilchenko

The Spin Light of neutrino ($SL\nu$) is an electromagnetic radiation of the neutrino magnetic moment emitted when neutrino moves in external conditions (fields or matter). The effect can be of significance in the extremely dense matter of…

高能物理 - 唯象学 · 物理学 2026-02-09 Alexander Grigoriev , Alexei Ternov

Chirality-induced spin selectivity is a spin-splitting phenomenon from a helical structure with a considerably effective spin-orbit coupling. This unexpectedly large spin-splitting phenomenon has been experimentally observed in chiral…

强关联电子 · 物理学 2024-05-08 Meng Xu , Yan Chen

Density-functional calculations using an exact exchange potential for a two-dimensional electron gas (2DEG) formed in a GaAs single quantum well predict the existence of a spin-polarized phase, when an excited subband becomes slightly…

介观与纳米尺度物理 · 物理学 2009-11-10 A. R. Goñi , P. Giudici , F. A. Reboredo , C. R. Proetto , C. Thomsen , K. Eberl , M. Hauser

We demonstrate the existence of a new type of spatially localized excitations in the unitary Fermi gas: spin polarized droplets with a peculiar internal structure involving the abrupt change of the pairing phase at the surface of the…

量子气体 · 物理学 2019-09-18 Piotr Magierski , Buğra Tüzemen , Gabriel Wlazłowski
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