77 citations · 198 across the 19 of their papers we have counts for
10 papers · 1 filter
Harnessing excitons at the nanoscale -- photoelectrical platform for quantitative sensing and imaging
Zhurun Ji, Mark E. Barber, Ziyan Zhu +8
Excitons -- quasiparticles formed by the binding of an electron and a hole through electrostatic attraction -- hold promise in the fields of quantum light confinement and optoelect…
Tunable Inter-Moiré Physics in Consecutively-Twisted Trilayer Graphene
Wei Ren, Konstantin Davydov, Ziyan Zhu +6
We fabricate a twisted trilayer graphene device with consecutive twist angles of 1.33 and 1.64 degrees, in which we electrostatically tune the electronic states from each of the tw…
Multi-moiré trilayer graphene: lattice relaxation, electronic structure, and magic angles
Charles Yang, Julian May-Mann, Ziyan Zhu +1
We systematically explore the structural and electronic properties of twisted trilayer graphene systems. In general, these systems are characterized by two twist angles, which lead…
Helical trilayer graphene: a moiré platform for strongly-interacting topological bands
Li-Qiao Xia, Sergio C. de la Barrera, Aviram Uri +9
Quantum geometry of electronic wavefunctions results in fascinating topological phenomena. A prominent example is the intrinsic anomalous Hall effect (AHE) in which a Hall voltage…
Electronic ratchet effect in a moiré system: signatures of excitonic ferroelectricity
Zhiren Zheng, Xueqiao Wang, Ziyan Zhu +17
Electronic ferroelectricity represents a new paradigm where spontaneous symmetry breaking driven by electronic correlations, in contrast to traditional lattice-driven ferroelectric…
Topological Signature of Stratospheric Poincare -- Gravity Waves
Weixuan Xu, Baylor Fox-Kemper, Jung-Eun Lee +2
The rotation of the earth breaks time-reversal and reflection symmetries in an opposite sense north and south of the equator, leading to a topological origin for certain atmospheri…
Twisto-electrochemical activity volcanoes in Trilayer Graphene
Mohammad Babar, Ziyan Zhu, Rachel Kurchin +2
In this work, we develop a twist-dependent electrochemical activity map, combining a tight-binding electronic structure model with modified Marcus-Hush-Chidsey kinetics in trilayer…
Pressure--enhanced fractional Chern insulators in moiré transition metal dichalcogenides along a magic line
Nicolás Morales-Durán, Jie Wang, Gabriel R. Schleder +5
We show that pressure applied to twisted WSe can enhance the many-body gap and region of stability of a fractional Chern insulator at filling . Our results are based on…
Anomalous interfacial electron transfer kinetics in twisted trilayer graphene caused by layer-specific localization
Kaidi Zhang, Yun Yu, Stephen Carr +9
Interfacial electron-transfer (ET) reactions underpin the interconversion of electrical and chemical energy. Pioneering experiments showed that the ET rate depends on the Fermi Dir…
Local atomic stacking and symmetry in twisted graphene trilayers
Isaac M. Craig, Madeline Van Winkle, Catherine Groschner +7
Moiré superlattices formed from twisting trilayers of graphene are an ideal model for studying electronic correlation, and offer several advantages over bilayer analogues, includin…