Establishing the Platform of Quasi-one-dimensional Topological Insulators with Emergent Functionalities
This program aims at addressing some of the major challenges facing three-dimensional (3D) and 2D topological insulators (TIs), by establishing the physics platform and materials database of various quasi-1D topological materials with emergent functionalities. Our goals are: (1). design and optimization of quasi-1D TI candidates; (2). synthesis and characterization of the materials; (3). demonstration of phase transitions between different topological phases by strain and/or temperature; (4). the search for 2D TIs in atomically thin layers of quasi-1D materials.
Synergistic and iterative collaborations have been established among the five team members with strong and diverse expertise in theory and computation, materials synthesis, spin- and angle- resolved photoemission spectroscopy, nanofabrication and quantum transport, and neutron and x-ray scattering. Successful implementation of the program will actualize the potentials offered by quasi-1D materials in the realization and discovery of a variety of topological quantum phases including tuning their topological phase transitions. These advances will ultimately pave the way for the realization of fault-tolerant quantum computing and novel spintronic devices for next-generation information technology.
Publications
Ideal weak topological insulator and protected helical saddle points
J. S. Oh, T. Xu, N. Dhale, S. Li, C. Lei, C. Yoon, W. Liu, J. Huang, H. Wu, M. Hashimoto, D. Lu, C. Jozwiak, A. Bostwick, E. Rotenberg, C. N. Lau, B. Lv, F. Zhang, R. J. Birgeneau, and M. Yi
11/7/2023
Synthesis, structure and canted antiferromagnetism of layered cobalt hydroxide sorbate
J. B. Lefton, W. Liu, C. McGuire, B. Lv, C. M. Brown, R. A. Klein, and T. Runčevski
11/1/2023
The pairing symmetry in quasi-one-dimensional superconductor Rb2 3 3
Ž. Gosar, T. Arh, K. Jaksetič, A. Zorko, W. Liu, H. Wu, C. Wang, H. Luetkens, B. Lv, and D. Arčon
10/1/2023
Gapless spin excitations in the superconducting state of a quasi-one-dimensional spin-triplet superconductor
K. M. Taddei, B. Lei, M. A. Susner, H. Zhai, T. J. Bullard, L. D. Sanjeewa, Q. Zheng, A. S. Sefat, S. Chi, C. dela Cruz, D. J. Singh, and B. Lv
5/30/2023
Geometric deep optical sensing
S. Yuan, C. Ma, E. Fetaya, T. Mueller, D. Naveh, F. Zhang, and F. Xia
3/17/2023
Magnetism and charge density wave order in kagome FeGe
X. Teng, J. S. Oh, H. Tan, L. Chen, J. Huang, B. Gao, J. Yin, J. Chu, M. Hashimoto, D. Lu, C. Jozwiak, A. Bostwick, E. Rotenberg, G. E. Granroth, B. Yan, R. J. Birgeneau, P. Dai, and M. Yi
3/13/2023
Evidence for Dirac flat band superconductivity enabled by quantum geometry
H. Tian, X. Gao, Y. Zhang, S. Che, T. Xu, P. Cheung, K. Watanabe, T. Taniguchi, M. Randeria, F. Zhang, C. N. Lau, and M. W. Bockrath
2/15/2023
Multiple-Intercalation Stages and Universal Tc Enhancement through Polar Organic Species in Electron-Doped 1T-SnSe2
H. Wu, S. Li, W. Liu, and B. Lv
2/15/2023
A Three-Stage Magnetic Phase Transition Revealed in Ultrahigh-Quality van der Waals Bulk Magnet CrSBr
W. Liu, X. Guo, J. Schwartz, H. Xie, N. U. Dhale, S. H. Sung, A. L. N. Kondusamy, X. Wang, H. Zhao, D. Berman, R. Hovden, L. Zhao, and B. Lv
9/23/2022
Impact of Electric Field Disorder on Broken-Symmetry States in Ultraclean Bilayer Graphene
F. R. Geisenhof, F. Winterer, A. M. Seiler, J. Lenz, F. Zhang, and R. T. Weitz
9/16/2022
Quantum cascade of correlated phases in trigonally warped bilayer graphene
A. M. Seiler, F. R. Geisenhof, F. Winterer, K. Watanabe, T. Taniguchi, T. Xu, F. Zhang, and R. T. Weitz
8/10/2022
Uncovering Topological Edge States in Twisted Bilayer Graphene
M. Fortin-Deschênes, R. Pu, Y. Zhou, C. Ma, P. Cheung, K. Watanabe, T. Taniguchi, F. Zhang, X. Du, and F. Xia
7/28/2022
Evidence of a room-temperature quantum spin Hall edge state in a higher-order topological insulator
N. Shumiya, M. S. Hossain, J. Yin, Z. Wang, M. Litskevich, C. Yoon, Y. Li, Y. Yang, Y. Jiang, G. Cheng, Y. Lin, Q. Zhang, Z. Cheng, T. A. Cochran, D. Multer, X. P. Yang, B. Casas, T. Chang, T. Neupert, Z. Yuan, S. Jia, H. Lin, N. Yao, L. Balicas, F. Zhang, Y. Yao, and M. Z. Hasan
7/14/2022
Intelligent infrared sensing enabled by tunable moiré quantum geometry
C. Ma, S. Yuan, P. Cheung, K. Watanabe, T. Taniguchi, F. Zhang, and F. Xia
4/13/2022
Nonsymmorphic symmetry-protected band crossings in a square-net metal PtPb4
H. Wu, A. M. Hallas, X. Cai, J. Huang, J. S. Oh, V. Loganathan, A. Weiland, G. T. McCandless, J. Y. Chan, S. Mo, D. Lu, M. Hashimoto, J. Denlinger, R. J. Birgeneau, A. H. Nevidomskyy, G. Li, E. Morosan, and M. Yi
3/18/2022
Reproducibility in the fabrication and physics of moiré materials
C. N. Lau, M. W. Bockrath, K. F. Mak, and F. Zhang
2/2/2022
New layered quaternary BaCu6Sn2As4−x and BaCu6Sn2P4−x phases: Crystal growth and physical properties
H. Wu, S. Li, X. Wang, S. Kwon, W. Liu, G. A. Ofenstein, M. J. Kim, and B. Lv
2/1/2022
Gate-Tunable Transport in Quasi-One-Dimensional α-Bi4I4 Field Effect Transistors
Y. Liu, R. Chen, Z. Zhang, M. Bockrath, C. N. Lau, Y. Zhou, C. Yoon, S. Li, X. Liu, N. Dhale, B. Lv, F. Zhang, K. Watanabe, T. Taniguchi, J. Huang, M. Yi, J. S. Oh, and R. J. Birgeneau
1/25/2022
Quantum anomalous Hall octet driven by orbital magnetism in bilayer graphene
F. R. Geisenhof, F. Winterer, A. M. Seiler, J. Lenz, T. Xu, F. Zhang, and R. T. Weitz
10/6/2021
Transport anomalies in the layered compound BaPt4Se6
S. Li, Y. Zhang, H. Wu, H. Zhai, W. Liu, D. P. Petit, J. S. Oh, J. Denlinger, G. T. McCandless, J. Y. Chan, R. J. Birgeneau, G. Li, M. Yi, and B. Lv
9/23/2021
Room-Temperature Topological Phase Transition in Quasi-One-Dimensional Material
B i 4 I 4
J. Huang, S. Li, C. Yoon, J. S. Oh, H. Wu, X. Liu, N. Dhale, Y. Zhou, Y. Guo, Y. Zhang, M. Hashimoto, D. Lu, J. Denlinger, X. Wang, C. N. Lau, R. J. Birgeneau, F. Zhang, B. Lv, and M. Yi
8/24/2021
New Verbeekite-type polymorphic phase and rich phase diagram in the
PdSe 2 − x Te x
W. Liu, M. R. Osanloo, X. Wang, S. Li, N. Dhale, H. Wu, M. L. Van de Put, S. Tiwari, W. G. Vandenberghe, and B. Lv
7/22/2021
Engineering symmetry breaking in 2D layered materials
L. Du, T. Hasan, A. Castellanos-Gomez, G. Liu, Y. Yao, C. N. Lau, and Z. Sun
2/8/2021
Enhanced superconductivity in the Se-substituted 1T-
PdTe 2
W. Liu, S. Li, H. Wu, N. Dhale, P. Koirala, and B. Lv
1/29/2021
Canted antiferromagnetism in the quasi-one-dimensional iron chalcogenide
BaFe 2 Se 4
X. Liu, K. M. Taddei, S. Li, W. Liu, N. Dhale, R. Kadado, D. Berman, C. D. Cruz, and B. Lv
11/4/2020
Line up for high-temperature Majoranas
Z. Bao, and F. Zhang
8/1/2020
Novel Polymorphic Phase of BaCu2As2: Impact of Flux for New Phase Formation in Crystal Growth
H. Wu, S. Li, Z. Wu, X. Wang, G. A. Ofenstein, S. Kwon, M. J. Kim, P. C. W. Chu, and B. Lv
7/23/2020
Moiré Band Topology in Twisted Bilayer Graphene
C. Ma, Q. Wang, S. Mills, X. Chen, B. Deng, S. Yuan, C. Li, K. Watanabe, T. Taniguchi, X. Du, F. Zhang, and F. Xia
7/21/2020
Zero-bias conductance peak in Dirac semimetal-superconductor devices
W. Yu, R. Haenel, M. A. Rodriguez, S. R. Lee, F. Zhang, M. Franz, D. I. Pikulin, and W. Pan
7/1/2020
Author Correction: Unconventional valley-dependent optical selection rules and landau level mixing in bilayer graphene
L. Ju, L. Wang, X. Li, S. Moon, M. Ozerov, Z. Lu, T. Taniguchi, K. Watanabe, E. Mueller, F. Zhang, D. Smirnov, F. Rana, and P. L. McEuen
6/24/2020
Strong mid-infrared photoresponse in small-twist-angle bilayer graphene
B. Deng, C. Ma, Q. Wang, S. Yuan, K. Watanabe, T. Taniguchi, F. Zhang, and F. Xia
6/1/2020
Crystal Structure and Electronic Properties of New Compound Zr6.5Pt6Se19
H. Wu, H. Zhai, S. Li, M. Sorolla, G. T. McCandless, D. P. Petit, J. Y. Chan, and B. Lv
5/27/2020
Emergent quantum materials
C. N. Lau, F. Xia, and L. Cao
5/1/2020
Composite Dirac semimetals
Z. Zhu, Z. Yu, W. Wu, L. Zhang, W. Zhang, F. Zhang, and S. A. Yang
10/11/2019
View All Publications
Research Highlights
Evidence of a Room-temperature Quantum Spin Hall Edge State in a Higher-order Topological Insulator
Fan Zhang (University of Texas at Dallas)
Discovery of Tunable Quantum Anomalous Hall Octet
Fan Zhang (University of Texas at Dallas)
New Topology & Tunable Superconductivity in a-Bi4I4
R.J. Birgeneau (Berkeley), C. N. Lau (Ohio St.),B. Lv, F. Zhang (UT-Dallas), M. Yi (Rice)
Special Achievements of PI Zhang’s Students
Fan Zhang, the University of Texas at Dallas
View All Highlights