Zobrazeno 1 - 10
of 801
pro vyhledávání: '"MacDonald, Allan H"'
Autor:
Zou, Bo, MacDonald, Allan H.
We show that the ground state of a weakly charged two-dimensional electron-hole fluid in a strong magnetic field is a broken translational symmetry state with interpenetrating lattices of localized vortices and antivortices in the electron-hole-pair
Externí odkaz:
http://arxiv.org/abs/2411.08810
Autor:
Fu, ZhuangEn, Samarawickrama, Piumi I., Ackerman, John, Zhu, Yanglin, Mao, Zhiqiang, Watanabe, Kenji, Taniguchi, Takashi, Wang, Wenyong, Dahnovsky, Yuri, Wu, Mingzhong, Chien, TeYu, Tang, Jinke, MacDonald, Allan H., Chen, Hua, Tian, Jifa
Publikováno v:
Nature Communications 15 (2024) 3630
Effective control of magnetic phases in two-dimensional magnets would constitute crucial progress in spintronics, holding great potential for future computing technologies. Here, we report a new approach of leveraging tunneling current as a tool for
Externí odkaz:
http://arxiv.org/abs/2410.19255
Autor:
Liu, Zhida, Wang, Haonan, Liu, Xiaohui, Ni, Yue, Gao, Frank, Arash, Saba, Kim, Dong Seob, Liu, Xiangcheng, Zeng, Yongxin, Quan, Jiamin, Huang, Di, Watanabe, Kenji, Taniguchi, Takashi, Baldini, Edoardo, MacDonald, Allan H., Shih, Chih-Kang, Yang, Li, Li, Xiaoqin
Many fascinating properties discovered in graphene and transition metal dichalcogenide (TMD) moir\'e superlattices originate from flat bands and enhanced many-body effects. Here, we discover new many-electron excited states in TMD homobilayers. As op
Externí odkaz:
http://arxiv.org/abs/2407.17025
Autor:
Zhang, Fan, Morales-Durán, Nicolás, Li, Yanxing, Yao, Wang, Su, Jung-Jung, Lin, Yu-Chuan, Dong, Chengye, Kim, Hyunsue, Robinson, Joshua A., Macdonald, Allan H., Shih, Chih-Kang
Transition metal dichalcogenide (TMD) twisted homobilayers have been established as an ideal platform for studying strong correlation phenomena, as exemplified by the recent discovery of fractional Chern insulator (FCI) states in twisted MoTe2 and Ch
Externí odkaz:
http://arxiv.org/abs/2406.20036
The low-energy collective excitations of semiconductors and insulators often couple strongly to light, allowing them to be probed optically. We argue here that in fractional Chern insulators intra-band collective excitations are dark in the sense tha
Externí odkaz:
http://arxiv.org/abs/2406.10709
Autor:
Xie, Tian, Wolf, Tobias M., Xu, Siyuan, Cui, Zhiyuan, Xiong, Richen, Ou, Yunbo, Hays, Patrick, Holleis, Ludwig F, Guo, Yi, Sheekey, Owen I, Patterson, Caitlin, Arp, Trevor, Watanabe, Kenji, Taniguchi, Takashi, Tongay, Seth Ariel, Young, Andrea F, MacDonald, Allan H., Jin, Chenhao
Spin and valley flavor polarization plays a central role in the many-body physics of flat band graphene, with fermi surface reconstructions often accompanied by quantized anomalous Hall and superconducting state observed in a variety of experimental
Externí odkaz:
http://arxiv.org/abs/2405.08074
Publikováno v:
Phys. Rev. B 110, 035130 (2024)
Topological flat moir\'e bands with nearly ideal quantum geometry have been identified in homobilayer transition metal dichalcogenide moir\'e superlattices, and are thought to be crucial for understanding the fractional Chern insulating states recent
Externí odkaz:
http://arxiv.org/abs/2404.13455
Autor:
Riolo, Riccardo, Tomadin, Andrea, Mazza, Giacomo, Asgari, Reza, MacDonald, Allan H., Polini, Marco
The question of whether or not passive sub-wavelength cavities can alter the properties of quantum materials is currently attracting a great deal of attention. In this Letter we show that the Fermi liquid parameters of a two-dimensional metal are mod
Externí odkaz:
http://arxiv.org/abs/2403.20067
The lowest Landau level of bilayer graphene has an octet of internal degrees of freedom, composed from spin, valley and orbital two-level systems. Dominance of $n=0$ orbitals over $n=1$ orbitals in low energy quantum fluctuations leads to distinct fr
Externí odkaz:
http://arxiv.org/abs/2402.10440
Autor:
Zeng, Yongxin, Wolf, Tobias M. R., Huang, Chunli, Wei, Nemin, Ghorashi, Sayed Ali Akbar, MacDonald, Allan H., Cano, Jennifer
Publikováno v:
Phys. Rev. B 109, 195406 (2024)
Superlattice potential modulation can produce flat minibands in Bernal-stacked bilayer graphene. In this work we study how band topology and interaction-induced symmetry-broken phases in this system are controlled by tuning the displacement field and
Externí odkaz:
http://arxiv.org/abs/2401.04321