Category: 4. Physics

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  • Study on electronic transport and optoelectronic properties of semiconductor 2D Ge₂Y₂ (Y = As, P, N)

    Study on electronic transport and optoelectronic properties of semiconductor 2D Ge₂Y₂ (Y = As, P, N)

    Electronic structure of Ge₂Y₂ monolayers

    The ground-state crystal structures of fully relaxed Ge₂Y₂ (Y = As, P, N) monolayers are shown in Fig. 1a and b. Each Ge₂Y₂ unit cell contains 4 atoms: 2 Ge atoms and 2 Y atoms. The x and y

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  • Momentum-resolved fingerprint of Mottness in layer-dimerized Nb3Br8

    Momentum-resolved fingerprint of Mottness in layer-dimerized Nb3Br8

  • Moeller, G., Dobrosavljević, V. & Ruckenstein, A. E. Rkky interactions and the Mott transition. Phys. Rev. B 59, 6846–6854 (1999).

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  • Manmana, S. R., Meden,…

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  • Dynamics of a helical vortex ring interacting with a vortex line

    Dynamics of a helical vortex ring interacting with a vortex line

    Model

    At sufficiently low temperatures, the dynamics of 3D BECs can be described by the time-dependent GP equation,

    $$i\hslash \frac{\partial \psi }{\partial t}=\left(-\frac{{\hslash }^{2}}{2m}{\nabla }^{2}+{V}_{{{\rm{trap}}}}+g{\left\vert \psi…

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  • Experimental observation of quantum mechanical fluorine tunnelling

    Experimental observation of quantum mechanical fluorine tunnelling

    Matrix-Isolation Experiments

    Figure 1 shows Ne-matrix infrared spectra in the regions from 500 to 580 cm−1 and from 830 to 870 cm−1 that were obtained after co-deposition of laser-ablated potassium fluoride with 1% F2 in solid neon at 5K. The…

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  • Taking three-dimensional x-ray diffraction (3DXRD) from the synchrotron to the laboratory scale

    Taking three-dimensional x-ray diffraction (3DXRD) from the synchrotron to the laboratory scale

  • Margulies, L., Winther, G. & Poulsen, H. In situ measurement of grain rotation during deformation of polycrystals. Science 291, 2392–2394 (2001).

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  • Superconductivity and a van Hove singularity confined to the surface of a topological semimetal

    Superconductivity and a van Hove singularity confined to the surface of a topological semimetal

    We begin our discussion with an examination of the electronic band structure of ZrAs2. ZrAs2 belongs to the nonsymmorphic space group Pnma (No. 62 \({D}_{2h}^{16}\)) (Fig. 1a), which is known to host Dirac nodal lines22,46; the sample…

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  • Skyrmion stabilisation and critical behaviour in tellurium-doped Cu2OSeO3

    Skyrmion stabilisation and critical behaviour in tellurium-doped Cu2OSeO3

    High-resolution synchrotron pXRD patterns for the polycrystalline Cu2OSe1−xTexO3 samples are included in Supplementary Fig. 1a to show the phase purity and structure of the samples synthesised. Upon successfully doping Te ions into the Se…

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  • Beating the Ramsey limit on sensing with deterministic qubit control

    Beating the Ramsey limit on sensing with deterministic qubit control

    Ramsey interferometry1 has been long established as the most sensitive measure of a qubit’s frequency2. In a Ramsey measurement, a qubit is prepared in a superposition of energy states, allowed to evolve freely and acquire phase, and then…

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