Zobrazeno 1 - 10
of 301
pro vyhledávání: '"Weng, Z. Y."'
Autor:
Tang, C. Y., Lin, Z. F., Zhang, J. X., Guo, X. C., Guan, J. Y., Gao, S. Y., Rao, Z. C., Zhao, J., Huang, Y. B., Qian, T., Weng, Z. Y., Jin, K., Sun, Y. J., Ding, H.
Angle-resolved photoemission spectroscopy (ARPES) measurements have established the phenomenon of kink in band dispersion of high-$T_{\rm c}$ cuprate superconductors. However, systematic studies of the kink in electron-doped cuprates are still lackin
Externí odkaz:
http://arxiv.org/abs/2110.12913
Autor:
Tang, C. Y., Lin, Z. F., Zhang, J. X., Guo, X. C., Guan, J. Y., Gao, S. Y., Rao, Z. C., Zhao, J., Huang, Y. B., Qian, T., Weng, Z. Y., Jin, K., Sun, Y. J., Ding, H.
We performed systematic angle-resolved photoemission spectroscopy measurements $in$-$situ$ on $T'$-${\rm La}_{2-x}{\rm Ce}_x\rm {CuO}_{4\pm\delta}$ (LCCO) thin films over the extended doping range prepared by the refined ozone/vacuum annealing method
Externí odkaz:
http://arxiv.org/abs/2106.05551
Autor:
Zhong, Y. G., Guan, J. Y., Shi, X., Zhao, J., Rao, Z. C., Tang, C. Y., Liu, H. J., Gu, G. D., Weng, Z. Y., Wang, Z. Q., Qian, T., Sun, Y. J., Ding, H.
Publikováno v:
Phys. Rev. B 98, 140507 (2018)
The cuprate superconductors distinguish themselves from the conventional superconductors in that a small variation in the carrier doping can significantly change the superconducting transition temperature (T_c), giving rise to a superconducting dome
Externí odkaz:
http://arxiv.org/abs/1805.06450
Autor:
Zhang, P., Richard, P., Qian, T., Shi, X., Ma, J., Zeng, L. -K., Wang, X. -P., Rienks, E., Zhang, C. -L., Dai, Pengcheng, You, Y. -Z., Weng, Z. -Y., Wu, X. -X., Hu, J. P., Ding, H.
Publikováno v:
Phys. Rev. X 4, 031001 (2014)
We report the observation by angle-resolved photoemission spectroscopy of an impurity state located inside the superconducting gap of Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$ and vanishing above the superconducting critical temperature, for which the spectral
Externí odkaz:
http://arxiv.org/abs/1312.7064
Autor:
Mei, J. W., Weng, Z. Y.
Publikováno v:
Phys. Rev. B 81, 014507 (2010)
We identify a new kind of elementary excitations, spin-rotons, in the doped Mott insulator. They play a central role in deciding the superconducting transition temperature Tc, resulting in a simple Tc formula,Tc=Eg/6, with Eg as the characteristic en
Externí odkaz:
http://arxiv.org/abs/0909.5567
Publikováno v:
Phys. Rev. B 79, 174409 (2009)
We study the S=1 square lattice Heisenberg antiferromagnet with spatially anisotropic nearest neighbor couplings $J_{1x}$, $J_{1y}$ frustrated by a next-nearest neighbor coupling $J_{2}$ numerically using the density-matrix renormalization group (DMR
Externí odkaz:
http://arxiv.org/abs/0901.3141
Publikováno v:
Phys. Rev. B 79, 020409(R) (2009)
We numerically demonstrate that a supersolid phase exists in a frustrated hard-core boson system on a triangular lattice over a wide range of interaction strength. In the infinite repulsion (Ising) limit, we establish a mapping to the same problem wi
Externí odkaz:
http://arxiv.org/abs/0810.0900
Publikováno v:
Phys.Rev.Lett.103, 160601 (2009)
We propose a second renormalization group method to handle the tensor-network states or models. This method reduces dramatically the truncation error of the tensor renormalization group. It allows physical quantities of classical tensor-network model
Externí odkaz:
http://arxiv.org/abs/0809.0182
Publikováno v:
Phys. Rev. Lett. 101, 090603 (2008)
We have proposed a novel numerical method to calculate accurately the physical quantities of the ground state with the tensor-network wave function in two dimensions. We determine the tensor network wavefunction by a projection approach which applies
Externí odkaz:
http://arxiv.org/abs/0806.3719
Publikováno v:
Phys. Rev. Lett. 101, 117203 (2008)
We numerically study the spin-1/2 antiferromagnetic Heisenberg model on the kagom\'{e} lattice using the density-matrix renormalization group (DMRG) method. We find that the ground state is a magnetically disordered spin liquid, characterized by an e
Externí odkaz:
http://arxiv.org/abs/0804.1616