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We present a new method for calculating the product yield of a radical pair recombination reaction in the presence of a weak time-dependent magnetic field. This method successfully circumvents the computational difficulties presented by a…

化学物理 · 物理学 2016-10-04 Hamish G. Hiscock , Daniel R. Kattnig , David E. Manolopoulos , P. J. Hore

We propose a spin-sensitive scanning probe microscopy experiment on double quantum dots in Pauli blockade conditions. Electric spin resonance is induced by an AC voltage applied to the scanning gate which induces lifting of the Pauli…

介观与纳米尺度物理 · 物理学 2017-08-08 E. Wach , B. Szafran

The spin dynamics of the ferromagnetic pinned layer of ferro-antiferromagnetic coupled NiFe/MnNi bilayers is investigated in a broad frequency range (30 MHz-6 GHz). A phenomenological model based on the Landau-Lifshitz equation for the…

材料科学 · 物理学 2009-11-10 D. Spenato , J. Ben Youssef , H. Le Gall

The energy-dependent frame transformation theory of Gao and Greene 1990 [Phys. Rev. A {\bf 42}, 6946 (1990)] is extended to yield quantitatively accurate description of the dissociative recombination process. Evidence is presented to show…

化学物理 · 物理学 2020-04-15 Dávid Hvizdoš , Chris H. Greene , Roman Čurík

We investigate spin states of few electrons in a double quantum dot by coupling them weakly to a magnetic field resilient NbTiN microwave resonator. We observe a reduced resonator transmission if resonator photons and spin singlet states…

介观与纳米尺度物理 · 物理学 2019-05-31 A. J. Landig , J. V. Koski , P. Scarlino , C. Reichl , W. Wegscheider , A. Wallraff , K. Ensslin , T. Ihn

We theoretically study a finite size $SF_1NF_2$ spin valve, where a normal metal ($N$) insert separates a thin standard ferromagnet ($F_1$) and a thick half-metallic ferromagnet ($F_2$). For sufficiently thin superconductor ($S$) widths…

超导电性 · 物理学 2018-03-12 Klaus Halterman , Mohammad Alidoust

The near-forward cross section for the pp -> pn pi^+ reaction has been measured at 492 MeV by using the large acceptance ANKE magnetic spectrometer placed at an internal target position of the storage ring COSY-Juelich. Protons and pions…

We investigate the quench dynamics of a quantum dot strongly coupled to spin-polarized ferromagnetic leads. The real-time evolution is calculated by means of the time-dependent density-matrix numerical renormalization group method…

介观与纳米尺度物理 · 物理学 2019-07-10 Kacper Wrześniewski , Ireneusz Weymann

We use a modified perturbative renormalization group approach to study the random quantum antiferromagnetic spin-3/2 chain. We find that in the case of rectangular distributions there is a quantum Griffiths phase and we obtain the dynamical…

无序系统与神经网络 · 物理学 2009-11-10 A. Saguia , B. Boechat , M. A. Continentino

We present a microscopic theory of fluctuation-mediated pairing mechanism in organic superconductors ${(TMTSF)}_{2}X$, where the experimentally observed coexistence of $2k_{F}$ charge fluctuation and $2k_{F}$ spin fluctuation is naturally…

强关联电子 · 物理学 2009-11-10 Y. Tanaka , K. Kuroki

Within the framework of the kinetic energy driven superconducting mechanism, the dynamical spin response of cuprate superconductors is studied from low-energy to high-energy. The spin self-energy is evaluated explicitly in terms of the…

超导电性 · 物理学 2014-09-29 Lulin Kuang , Yu Lan , Shiping Feng

We study the emission of individual quantum dots in CdTe/ZnTe samples doped with a low concentration of Cr. In addition to dots with a photoluminescence (PL) split by the exchange interaction with a magnetic Cr atom, we observe another type…

介观与纳米尺度物理 · 物理学 2019-11-27 L. Besombes , H. Boukari , V. Tiwari , A. Lafuente-Sampietro , M. Sunaga , K. Makita , S. Kuroda

The spin and charge excitations of the t--J ladder are studied by exact diagonalization techniques for several electron densities. The various modes are classified according to their spin (singlet or triplet excitations) and their parity…

凝聚态物理 · 物理学 2016-08-31 D. Poilblanc , D. J. Scalapino , W. Hanke

We present a coherent scenario for the physics of cuprate superconductors, which is based on a charge-driven inhomogeneity, i.e. the ``stripe phase''. We show that spin and charge critical fluctuations near the stripe instability of…

超导电性 · 物理学 2009-10-31 S. Caprara , C. Castellani , C. Di Castro , M. Grilli , A. Perali

We present a systematic study of the electronic and magnetic properties of transition-metal (TM) atomic chains adsorbed on the zigzag single-wall carbon nanotubes (SWNTs). We considered the adsorption on the external and internal wall of…

其他凝聚态物理 · 物理学 2009-11-11 Engin Durgun , Salim Ciraci

We theoretically study the interplay of spin-orbit and hyperfine interactions in dynamical nuclear polarization in two-electron semiconductor double quantum dots near the singlet $(S)$ - triplet $(T_+)$ anticrossing. The goal of the scheme…

介观与纳米尺度物理 · 物理学 2016-01-20 Marko J. Rančić , Guido Burkard

Understanding spin excitations and their connection to unconventional superconductivity have remained a central issue since the discovery of the cuprates. Direct measurement of the dynamical spin structure factor in the parent compounds can…

强关联电子 · 物理学 2018-06-12 Yao Wang , Edwin W. Huang , Brian Moritz , Thomas P. Devereaux

We study spin dependent electron transmission through one- and two-dimensional curved waveguides and quantum dots with account of spin-orbit interaction. We prove that for a transmission through arbitrary structure there is no spin…

介观与纳米尺度物理 · 物理学 2009-11-07 Evgeny N. Bulgakov , Almas. F. Sadreev

The relativistic mean field theory in combination with the analytic continuation in the coupling constant method is used to determine the energies and widths of single-particle resonant states in Sn isotopes. It is shown that there exists…

核理论 · 物理学 2009-11-11 Jian You Guo , Xiang Zheng Fang

Efficient conversion of a spin signal into an electric voltage in mainstream semiconductors is one of the grand challenges of spintronics. This process is commonly achieved via a ferromagnetic tunnel barrier where non-linear electric…

应用物理 · 物理学 2020-08-19 Emile Fourneau , Alejandro V. Silhanek , Ngoc Duy Nguyen
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