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相关论文: Weak localization in boron nitride encapsulated bi…

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The strong light matter interaction and the valley selective optical selection rules make monolayer (ML) MoS2 an exciting 2D material for fundamental physics and optoelectronics applications. But so far optical transition linewidths even at…

Nuclear spin relaxation is studied in n-GaAs thick layers and microcavity samples with different electron densities. We reveal that both in metallic samples where electrons are free and mobile, and in insulating samples, where electrons are…

Hexagonal boron nitride (hBN) has emerged as a promising two-dimensional platform for quantum sensing, due to its optically addressable spin defects, such as the negatively charged boron vacancy ($V_{\text{B}}^-$). Despite hBN being…

The long standing problem of inexplicably short spin relaxation in carbon nanotubes (CNTs) is examined. The curvature-mediated spin-orbital interaction is shown to induce fluctuating electron spin precession causing efficient relaxation in…

材料科学 · 物理学 2015-05-18 Y. G. Semenov , J. M. Zavada , K. W. Kim

We report calculations of spin relaxation dynamics of two-dimensional electron gas with spin-orbit interaction at the edge region. It is found that the relaxation of spin polarization near the edge is more slow than relaxation in the bulk.…

介观与纳米尺度物理 · 物理学 2016-08-31 Yuriy V. Pershin

Quantum sensing based on solid-state spin defects provides a uniquely versatile platform for imaging physical properties at the nanoscale under diverse environmental conditions. Operation of most sensors used to-date is based on projective…

We report electronic control and measurement of an imbalance between spin-up and spin-down electrons in micron-scale open quantum dots. Spin injection and detection was achieved with quantum point contacts tuned to have spin-selective…

介观与纳米尺度物理 · 物理学 2009-11-13 E. J. Koop , B. J. van Wees , D. Reuter , A. D. Wieck , C. H. van der Wal

We report Muon Spin Relaxation studies in weak transverse fields of the superconductivity in the metal cluster compound, Ga$\_{84}$[N(SiMe$\_{3}$)$\_{2}$]$\_{20}$-Li$\_{6}$Br$\_{2}$(thf)$\_{20}\cdot $2toluene. The temperature and field…

强关联电子 · 物理学 2016-08-16 D. Bono , A. Schnepf , J. Hartig , H. Schnöckel , G. J. Nieuwenhuys , A. Amato , L. J. De Jongh

We study the electronic spin relaxation effect in the hole-doped monolayer and bilayer transition-metal dichalcogenides in the presence of the crystal defects. We consider realistic models of the lattice vacancy and actually estimate the…

介观与纳米尺度物理 · 物理学 2017-03-06 Tetsuro Habe , Mikito Koshino

We undertook an ab-initio study of hexagonal boron nitride (hBN) sandwiched between Ni(111) layers to examine the interface of this material structure. We considered Ni(111)/hBN/Ni(111) with a slab with three Ni atomic layers to determine…

介观与纳米尺度物理 · 物理学 2022-04-15 Halimah Harfah , Yusuf Wicaksono , Muhammad Aziz Majidi , Koichi Kusakabe

We study spin-dependent transport in a suspended carbon nanotube quantum dot in contact with two ferromagnetic leads and with the dot's spin coupled to the flexural mechanical modes. The spin-vibration interaction induces spin-flip…

介观与纳米尺度物理 · 物理学 2015-03-03 Pascal Stadler , Wolfgang Belzig , Gianluca Rastelli

Using long-distance lateral devices, spin transport near the interface of Si and its native oxide (SiO2) is studied by spin-valve measurements in an in-plane magnetic field and spin precession measurements in a perpendicular magnetic field…

材料科学 · 物理学 2013-05-29 Hyuk-Jae Jang , Ian Appelbaum

We studied the crystal structure and spin state of MnP under high pressure with synchrotron X-ray diffraction and X-ray emission spectroscopy. MnP has an exceedingly strong anisotropy in compressibility, with the primary compressible…

The inhomogeneity of an electron spin ensemble as well as fluctuating environment acting upon individual spins drastically shorten the spin coherence time $T_2$ and hinder coherent spin manipulation. We show that this problem can be solved…

介观与纳米尺度物理 · 物理学 2021-10-13 V. V. Belykh , A. R. Korotneva , D. R. Yakovlev

Manifestations of quantum interference effects in macroscopic objects are rare. Weak localization is one of the few examples of such effects showing up in the electron transport through solid state. Here we show that weak localization…

介观与纳米尺度物理 · 物理学 2018-08-02 V. V. Belykh , A. Yu. Kuntsevich , M. M. Glazov , K. V. Kavokin , D. R. Yakovlev , M. Bayer

We discuss the implications of a small indium content (3%) in a GaAs epilayer on the electron- and nuclear-spin relaxation due to enhanced quadrupolar effects induced by the strain. Using the weakly perturbative spin-noise spectroscopy, we…

介观与纳米尺度物理 · 物理学 2022-07-27 C. Rittmann , M. Yu. Petrov , A. N. Kamenskii , K. V. Kavokin , A. Yu. Kuntsevich , Yu. P. Efimov , S. A. Eliseev , M. Bayer , A. Greilich

We have performed inelastic neutron scattering measurements on the single-layer cuprate Bi2+xSr2-xCuO6+y (Bi2201) with x=0.2, 0.3, 0.4 and 0.5, a doping range that spans the spin-glass (SG) to superconducting (SC) phase boundary. The doping…

强关联电子 · 物理学 2013-02-06 M. Enoki , M. Fujita , T. Nishizaki , S. Iikubo , D. K. Singh , S. Chang , J. M. Tranquada , K. Yamada

We perform an analysis of the experimentally known temperature dependence of the staggered magnetization in the antiferromagnetic phase. This analysis allows us to put an upper limit on the unknown value of the spin wave velocity along the…

强关联电子 · 物理学 2009-08-02 Andrew Ong , Goetz S. Uhrig , Oleg P. Sushkov

We study the intra-valley spin-orbit mediated spin relaxation in monolayers of MoS2 within a two bands effective Hamiltonian. The intrinsic spin splitting of the valence band as well as a Rashba-like coupling due to the breaking of the…

介观与纳米尺度物理 · 物理学 2013-06-18 H. Ochoa , R. Roldán

Since the discovery of superconductive twisted bilayer graphene which initiated the field of twistronics, moir\'e systems have not ceased to exhibit fascinating properties. We demonstrate that in boron nitride twisted bilayers, for a given…

材料科学 · 物理学 2023-03-29 Sylvain Latil , Hakim Amara , Lorenzo Sponza