Zobrazeno 1 - 10
of 774
pro vyhledávání: '"Kung Y"'
Autor:
Baranowski, M., Surrente, A., Klopotowski, L., Urban, J. M., Zhang, N., Maude, D. K., Wiwatowski, K., Mackowski, S., Kung, Y. C., Dumcenco, D., Kis, A., Plochocka, P.
Stacking atomic monolayers of semiconducting transition metal dichalcogenides (TMDs) has emerged as an effective way to engineer their properties. In principle, the staggered band alignment of TMD heterostructures should result in the formation of in
Externí odkaz:
http://arxiv.org/abs/1709.04150
Autor:
Kung, Y. F., Bazin, C., Wohlfeld, K., Wang, Yao, Chen, C. -C., Jia, C. J., Johnston, S., Moritz, B., Mila, F., Devereaux, T. P.
Publikováno v:
Phys. Rev. B 96, 195106 (2017)
Using determinant quantum Monte Carlo (DQMC) simulations, we systematically study the doping dependence of the crossover from one to two dimensions and its impact on the magnetic properties of the Hubbard model. A square lattice of chains is used, in
Externí odkaz:
http://arxiv.org/abs/1707.01562
Autor:
Baranowski, M., Surrente, A., Maude, D. K., Ballottin, M, Mitioglu, A. A., Christianen, P. C. M., Kung, Y. C., Dumcenco, D., Kis, A., Plochocka, P
A rate equation model for the dark and bright excitons kinetics is proposed which explains the wide variation in the observed degree of circular polarization of the PL emission in different TMDs monolayers. Our work suggests that the dark exciton sta
Externí odkaz:
http://arxiv.org/abs/1701.03070
Autor:
Kung, Y. F., Chen, C. -C., Wang, Yao, Huang, E. W., Nowadnick, E. A., Moritz, B., Scalettar, R. T., Johnston, S., Devereaux, T. P.
Publikováno v:
Phys. Rev. B 93, 155166 (2016)
We characterize the three-orbital Hubbard model using state-of-the-art determinant quantum Monte Carlo (DQMC) simulations with parameters relevant to the cuprate high-temperature superconductors. The simulations find that doped holes preferentially r
Externí odkaz:
http://arxiv.org/abs/1601.05421
Autor:
Kung, Y. F., Nowadnick, E. A., Jia, C. J., Johnston, S., Moritz, B., Scalettar, R. T., Devereaux, T. P.
Publikováno v:
Phys. Rev. B 92, 195108 (2015)
To shed light on how electronic correlations vary across the phase diagram of the cuprate superconductors, we examine the doping evolution of spin and charge excitations in the single-band Hubbard model using determinant quantum Monte Carlo (DQMC). I
Externí odkaz:
http://arxiv.org/abs/1509.04754
Publikováno v:
Physical Review B 90, 224507 (2014)
We study three proposals for broken symmetry in the cuprate pseudogap - oxygen antiferromagnetism, $\Theta_{II}$ orbital loop currents, and circulating currents involving apex oxygens - through numerical exploration of multi-orbital Hubbard models. O
Externí odkaz:
http://arxiv.org/abs/1408.6231
Autor:
Jia, C. J., Nowadnick, E. A., Wohlfeld, K., Kung, Y. F., Chen, C. -C., Johnston, S., Tohyama, T., Moritz, B., Devereaux, T. P.
Publikováno v:
Nature Communications 5, 3314 (2014)
How coherent quasiparticles emerge by doping quantum antiferromagnets is a key question in correlated electron systems, whose resolution is needed to elucidate the phase diagram of copper oxides. Recent resonant inelastic X-ray scattering (RIXS) expe
Externí odkaz:
http://arxiv.org/abs/1308.3717
Autor:
Kung, Y. F., Lee, W. -S., Chen, C. -C., Kemper, A. F., Sorini, A. P., Moritz, B., Devereaux, T. P.
Publikováno v:
Physical Review B 88, 125114 (2013)
Using time-dependent Ginzburg-Landau theory, we study the role of amplitude and phase fluctuations in the recovery of charge and spin stripe phases in response to a pump pulse that melts the orders. For parameters relevant to the case where charge or
Externí odkaz:
http://arxiv.org/abs/1306.3516
Publikováno v:
Phys. Rev. B 87, 235133 (2013)
We have performed numerical studies of the Hubbard-Holstein model in two dimensions using determinant quantum Monte Carlo (DQMC). Here we present details of the method, emphasizing the treatment of the lattice degrees of freedom, and then study the f
Externí odkaz:
http://arxiv.org/abs/1306.2968
Autor:
Chuang, Y. D., Lee, W. S., Kung, Y. F., Sorini, A. P., Moritz, B., Moore, R. G., Patthey, L., Trigo, M., Lu, D. H., Kirchmann, P. S., Yi, M., Krupin, O., Langner, M., Zhu, Y., Zhou, S. Y., Reis, D. A., Huse, N., Robinson, J. S., Kaindl, R. A., Schoenlein, R. W., Johnson, S. L., Forst, M., Doering, D., Denes, P., Schlotter, W. F., Turner, J. J., Sasagawa, T., Hussain, Z., Shen, Z. X., Devereaux, T. P.
Publikováno v:
Phys. Rev. Lett. 110, 127404 (2013)
We investigate the order parameter dynamics of the stripe-ordered nickelate, La$_{1.75}$Sr$_{0.25}$NiO$_4$, using time-resolved resonant X-ray diffraction. In spite of distinct spin and charge energy scales, the two order parameters' amplitude dynami
Externí odkaz:
http://arxiv.org/abs/1302.4522