Zobrazeno 1 - 10
of 248
pro vyhledávání: '"A. Kogar"'
Autor:
Zhang, Xinshu, Carbin, Tyler, Du, Kai, Li, Bingqing, Wang, Kefeng, Li, Casey, Qian, Tiema, Ni, Ni, Cheong, Sang-Wook, Kogar, Anshul
Planar chiral structures possess a two dimensional handedness that is associated with broken mirror symmetry. Such motifs span vast length scales; examples include certain pinwheel molecules, nautilus shells, cyclone wind patterns and spiral galaxies
Externí odkaz:
http://arxiv.org/abs/2410.18086
Publikováno v:
Struct. Dyn. 11, 024303 (2024)
The temporal resolution of ultrafast electron diffraction (UED) at weakly relativistic beam energies ($\lesssim$ 100 keV) suffers from space-charge induced electron pulse broadening. We describe the implementation of a radio frequency (RF) cavity ope
Externí odkaz:
http://arxiv.org/abs/2311.16400
Autor:
Zhang, Xinshu, Carbin, Tyler, Culver, Adrian B., Du, Kai, Wang, Kefeng, Cheong, Sang-Wook, Roy, Rahul, Kogar, Anshul
In a solid, the electronic subsystem can exhibit incipient order with lower point group symmetry than the crystal lattice. External fields that couple to electronic order parameters have rarely been investigated, however, despite their potential impo
Externí odkaz:
http://arxiv.org/abs/2307.11956
Autor:
Carbin, Tyler, Zhang, Xinshu, Culver, Adrian B., Zhao, Hengdi, Zong, Alfred, Acharya, Rishi, Abbamonte, Cecilia J., Roy, Rahul, Cao, Gang, Kogar, Anshul
Publikováno v:
Phys. Rev. Lett. 130, 186902 (2023)
Upon intense femtosecond photo-excitation, a many-body system can undergo a phase transition through a non-equilibrium route, but understanding these pathways remains an outstanding challenge. Here, we use time-resolved second harmonic generation to
Externí odkaz:
http://arxiv.org/abs/2305.05220
Autor:
Su, Yifan, Zong, Alfred, Kogar, Anshul, Lu, Di, Hong, Seung Sae, Freelon, Byron, Rohwer, Timm, Hwang, Harold Y., Gedik, Nuh
Publikováno v:
Nano Letters 23, 10772 (2023)
The ability to synthesize and control two-dimensional (2D) crystals creates numerous opportunities for studying emergent states of matter and their novel functionalities. Freestanding films provide a particularly versatile platform for materials engi
Externí odkaz:
http://arxiv.org/abs/2212.12082
Autor:
Cheng, Yun, Zong, Alfred, Wu, Lijun, Meng, Qingping, Xia, Wei, Qi, Fengfeng, Zhu, Pengfei, Zou, Xiao, Jiang, Tao, Guo, Yanfeng, van Wezel, Jasper, Kogar, Anshul, Zuerch, Michael W., Zhang, Jie, Zhu, Yimei, Xiang, Dao
Publikováno v:
Nature Physics 20, 54 (2024)
Topological defects play a key role in nonequilibrium phase transitions, ranging from birth of the early universe to quantum critical behavior of ultracold atoms. In solids, transient defects are known to generate a variety of hidden orders not acces
Externí odkaz:
http://arxiv.org/abs/2211.05748
Charge-density-wave order in a solid can be temporarily "melted" by a strong laser pulse. Here we use the discrete Gross-Pitaevskii equation on a cubic lattice to simulate the recovery of the CDW long-range phase coherence following such a pulse. Our
Externí odkaz:
http://arxiv.org/abs/2203.05001
Autor:
Cheng, Yun, Zong, Alfred, Li, Jun, Xia, Wei, Duan, Shaofeng, Zhao, Wenxuan, Li, Yidian, Qi, Fengfeng, Wu, Jun, Zhao, Lingrong, Zhu, Pengfei, Zou, Xiao, Jiang, Tao, Guo, Yanfeng, Yang, Lexian, Qian, Dong, Zhang, Wentao, Kogar, Anshul, Zuerch, Michael W., Xiang, Dao, Zhang, Jie
Publikováno v:
Nature Communications 13, 963 (2022)
In low-dimensional systems with strong electronic correlations, the application of an ultrashort laser pulse often yields novel phases that are otherwise inaccessible. The central challenge in understanding such phenomena is to determine how dimensio
Externí odkaz:
http://arxiv.org/abs/2202.09668
Autor:
Zong, Alfred, Dolgirev, Pavel E., Kogar, Anshul, Su, Yifan, Shen, Xiaozhe, Straquadine, Joshua A. W., Wang, Xirui, Luo, Duan, Kozina, Michael E., Reid, Alexander H., Li, Renkai, Yang, Jie, Weathersby, Stephen P., Park, Suji, Sie, Edbert J., Jarillo-Herrero, Pablo, Fisher, Ian R., Wang, Xijie, Demler, Eugene, Gedik, Nuh
Publikováno v:
Phys. Rev. Lett. 127, 227401 (2021)
Engineering novel states of matter with light is at the forefront of materials research. An intensely studied direction is to realize broken-symmetry phases that are "hidden" under equilibrium conditions but can be unleashed by an ultrashort laser pu
Externí odkaz:
http://arxiv.org/abs/2110.00865
Publikováno v:
MRS Bulletin 46, 720 (2021)
Exciting electrons in solids with intense light pulses offers the possibility of generating new states of matter through nonthermal means and controlling their macroscopic properties on femto- to picosecond timescales. One way to manipulate a solid i
Externí odkaz:
http://arxiv.org/abs/2104.10373