Zobrazeno 1 - 10
of 390
pro vyhledávání: '"Wu, R. Q."'
Publikováno v:
Physical Review MATERIALS 5, 065801 (2021)
Perovskite SrTiO3 (STO) is an attractive photocatalyst for solar water splitting, but suffers from a limited photoresponse in the ultraviolet spectral range due to its wide band gap. By means of hybrid density functional theory calculations, we syste
Externí odkaz:
http://arxiv.org/abs/2105.14165
Employing the the stellar evolution code (Modules for Experiments in Stellar Astrophysics), we calculate yields of heavy elements from massive stars via stellar wind and core-collapse supernovae (CCSN) ejecta to interstellar medium (ISM). In our mode
Externí odkaz:
http://arxiv.org/abs/2102.01352
Autor:
Hou, Y. S., Wu, R. Q.
Publikováno v:
Phys. Rev. B 103, 064412 (2021)
The intrinsic antiferromagnetic (AFM) interlayer coupling in two-dimensional magnetic topological insulator MnBi$_2$Te$_4$ places a restriction on realizing stable quantum anomalous Hall effect (QAHE) [Y. Deng et al., Science 367, 895 (2020)]. Throug
Externí odkaz:
http://arxiv.org/abs/2004.04862
Publikováno v:
Phys. Rev. B 100, 224427 (2019)
We perform systematic first-principles calculations to investigate the spin-phonon coupling (SPC) of Cr2Ge2Te6 (CGT) monolayer (ML). It is found that the Eg phonon mode at 211.8 cm^{-1} may have a SPC as large as 3.19 cm^{-1}, as it directly alters t
Externí odkaz:
http://arxiv.org/abs/1909.12968
Autor:
Bouma, D. S., Chen, Z., Zhang, B., Bruni, F., Flatté, M. E., Streubel, R., Wang, L. -W., Wu, R. Q., Hellman, F.
Publikováno v:
Phys. Rev. B 101, 014402 (2020)
The amorphous iron-germanium system ($a$-Fe$_x$Ge$_{1-x}$) lacks long-range structural order and hence lacks a meaningful Brillouin zone. The magnetization of \aFeGe is well explained by the Stoner model for Fe concentrations $x$ above the onset of m
Externí odkaz:
http://arxiv.org/abs/1908.06055
Autor:
Hou, Y. S., Wu, R. Q.
Publikováno v:
Phys. Rev. Applied 11, 054032 (2019)
Engineering Gilbert damping of ferromagnetic metal films is of great importance to exploit and design spintronic devices that are operated with an ultrahigh speed. Based on scattering theory of Gilbert damping, we extend the torque method originally
Externí odkaz:
http://arxiv.org/abs/1902.08700
Autor:
Hou, Y. S., Wu, R. Q.
Publikováno v:
Phys. Rev. B 101, 121401 (2020)
Realizing axion insulator state with a uniform magnetization considerably facilitates experimental explorations of the intriguing topological magnetoelectric effect, a hallmark of three-dimensional (3D) topological insulators (TIs). Through density f
Externí odkaz:
http://arxiv.org/abs/1902.03372
Autor:
Hou, Y. S., Wu, R. Q.
Publikováno v:
Nano Lett. 19, 2472 (2019)
We propose to use ferromagnetic insulator MnBi2Se4/Bi2Se3/antiferromagnetic insulator Mn2Bi2Se5 heterostructures for the realization of the axion insulator state. Importantly, the axion insulator state in such heterostructures only depends on the mag
Externí odkaz:
http://arxiv.org/abs/1809.09265
Autor:
Zhou, C., Liu, Y. P., Wang, Z., Ma, S. J., Jia, M. W., Wu, R. Q., Zhou, L., Zhang, W., Liu, M. K., Wu, Y. Z., Qi, J.
Publikováno v:
Phys. Rev. Lett. 121, 086801 (2018)
Novel mechanisms for electromagnetic wave emission in the terahertz (THz) frequency regime emerging at the nanometer scale have recently attracted intense attention for the purpose of searching next-generation broadband THz emitters. Here, we report
Externí odkaz:
http://arxiv.org/abs/1804.04765
Publikováno v:
Phys. Rev. B 98, 020403(R) (2018)
Superconducting qubits are hampered by flux noise produced by surface spins from a variety of microscopic sources. Recent experiments indicated that hydrogen (H) atoms may be one of those sources. Using density functional theory calculations, we repo
Externí odkaz:
http://arxiv.org/abs/1709.06208