Zobrazeno 1 - 10
of 1 470
pro vyhledávání: '"Berry connection and curvature"'
Publikováno v:
IEEE Transactions on Antennas and Propagation. 70:2358-2363
Broadside radiation from Chern photonic topological insulators (PTIs) is studied in this work. The one-way dispersion of the topological edge mode is located in the fast wave region, making leaky-wave radiation possible. In this paper, design guideli
Publikováno v:
Nano Letters. 21:9468-9475
Nonvanishing Berry curvature dipole (BCD) and persistent spin texture (PST) are intriguing physical manifestations of electronic states in noncentrosymmetric 2D materials. The former induces a nonlinear Hall conductivity while the latter offers a coh
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Nature Communications
Nature Communications
The nonlinear Hall effect is an unconventional response, in which a voltage can be driven by two perpendicular currents in the Hall-bar measurement. Unprecedented in the family of the Hall effects, it can survive time-reversal symmetry but is sensiti
Autor:
Cosimo Gorini, S. Schlauderer, Rupert Huber, Ferdinand Evers, Leonard Weigl, Vanessa Junk, Ulrich Höfer, Oleg E. Tereshchenko, Jens Güdde, Jan Wilhelm, Jack Crewse, P. Grössing, Konstantin A. Kokh, Dmitry Afanasiev, C. P. Schmid, Niklas Hofmann, Klaus Richter, Suguru Ito, Manuel Meierhofer
Publikováno v:
Nature. 593:385-390
When intense lightwaves accelerate electrons through a solid, the emerging high-order harmonic (HH) radiation offers key insights into the material1,2,3,4,5,6,7,8,9,10,11. Sub-optical-cycle dynamics—such as dynamical Bloch oscillations2,3,4,5, quas
Autor:
Mazhar N. Ali, Anastasios Markou, Yan Sun, Jonathan Noky, Liguo Zhang, Claudia Felser, Jacob Gayles, Peter Swekis, Elena Derunova
Publikováno v:
Communications Physics, Vol 4, Iss 1, Pp 1-7 (2021)
Communications Physics
Communications Physics
Topological magnetic semimetals, like Co3Sn2S2 and Co2MnGa, display exotic transport properties, such as large intrinsic anomalous (AHE) due to uncompensated Berry curvature. The highly symmetric XPt3 compounds exhibit anti-crossing gapped nodal line
Autor:
Guangwei Wang, Shancai Wang, Wenhua Song, Qi Wang, Man Li, Zhengtai Liu, Zhiping Yin, Rui Lou, Zhonghao Liu, Yaobo Huang, Hechang Lei, Zhihong Yuan
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Kagome-lattices of 3d-transition metals hosting Weyl/Dirac fermions and topological flat bands exhibit non-trivial topological characters and novel quantum phases, such as the anomalous Hall effect and fractional quantum Hall effect. With considerati
Autor:
Darius H. Torchinsky, Takahiro Morimoto, Joseph Orenstein, David Hsieh, Joel E. Moore, John Harter
Publikováno v:
Annual Review of Condensed Matter Physics. 12:247-272
We review recent progress in the study of photogalvanic effects and optical second-harmonic generation in topological and noncentrosymmetric metals.
Autor:
Hong-Bo Sun, Chao-Xing Liu, Zhihong Zhu, Rui-Xing Zhang, Ruo Yang Zhang, Jing Feng, Yan-Gang Bi, Oubo You, Biao Yang, Shuang Zhang, Che Ting Chan
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Nature Communications
Nature Communications
Berry curvature, the counterpart of the magnetic field in the momentum space, plays a vital role in the transport of electrons in condensed matter physics. It also lays the foundation for the emerging field of topological physics. In the three-dimens
Autor:
Yue-Wen Fang, Xixiang Zhang, Peng Li, Ziqiang Qiu, Husam N. Alshareef, Senfu Zhang, Bin Fang, Xin He, Chenhui Zhang, Yan Li, Wenbo Mi, Yan Wen, Wenyi Tong, Haili Bai, Dongxing Zheng
Publikováno v:
ACS Nano. 15:5086-5095
The Berry phase, which reveals the intimate geometrical structure underlying quantum mechanics, plays a central role in the anomalous Hall effect. In this work, we observed a sign change of Berry curvatures at the interface between the ferromagnet Sr
Autor:
Da-Bao Yang
Publikováno v:
International Journal of Theoretical Physics. 60:944-953
Quantum state preparation has drawn great attention to physical community. In order to solve this challenge, the protocol of counterdiabatic driving was put forward. In this paper, the idea was applied to two important models, Coherent states and Spi