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99 papers · 1 filter
A Chiral Superlattice Route to Spin-Split Topological Antiferromagnetism
Thao Dinh, Mengke Liu, Jian-Xiang Qiu +48
The interplay between chirality and magnetism is a profound topic, spanning particle physics, condensed matter, chemistry and origin of life. In this paper, we study this interplay…
Lithography defined semiconductor moires with anomalous in-gap quantum Hall states
Wei Pan, D. Bruce Burckel, Catalin D. Spataru +16
Quantum materials and phenomena have attracted great interest for their potential applications in next-generation microelectronics and quantum-information technologies. In one espe…
Twist Engineering of Anisotropic Excitonic and Optical Properties of a Two-Dimensional Magnetic Semiconductor
Qiuyang Li, Xiaohan Wan, Senlei Li +12
Two dimensional (2D) van der Waals (vdW) magnetic semiconductors are a new class of quantum materials for studying the emergent physics of excitons and spins in the 2D limit. Twist…
Topological anomalous Floquet photon pump
Manshuo Lin, Saeed Rahmanian Koshkaki, Mohsen Yarmohammadi +1
There is a close theoretical connection between topological Floquet physics and cavity QED, yet this connection has not been realized experimentally due to complicated cavity QED m…
Probing topological phases in a perturbed Kane-Mele model via RKKY interaction: Application to monolayer jacutingaite PtHgSe
Mohsen Yarmohammadi, Saeed Rahmanian Koshkaki, Jamal Berakdar +2
Quantum spin Hall insulators (QSHIs) are promising for spintronics, leveraging strong spin-orbit coupling for efficient spin manipulation via electrical and optical methods, with p…
Quantum Sensing of Broadband Spin Dynamics and Magnon Transport in Antiferromagnets
Alex Lee Melendez, Shekhar Das, Francisco Ayala Rodriguez +8
Optical detection of magnetic resonance using quantum spin sensors (QSS) provides a spatially local and sensitive technique to probe spin dynamics in magnets. However, its utility…
Spin-mechanical coupling in 2D antiferromagnet CrSBr
Fan Fei, Yulu Mao, Wuzhang Fang +7
Spin-mechanical coupling is vital in diverse fields including spintronics, sensing and quantum transduction. Two-dimensional (2D) magnetic materials provide a unique platform for i…
Epitaxially defined Luttinger liquids on MoS bicrystals
Bingchen Deng, Heonsu Ahn, Jue Wang +11
A mirror twin boundary (MTB) in a transition metal dichalcogenide (TMD) monolayer can host one-dimensional electron liquid of a topological nature with tunable interactions. Unfort…
Transport response of topological hinge modes in -BiBr
Md Shafayat Hossain, Qi Zhang, Zhiwei Wang +19
Electronic topological phases are renowned for their unique properties, where conducting surface states exist on the boundary of an insulating three-dimensional bulk. While the tra…
Large Quantum Anomalous Hall Effect in Spin-Orbit Proximitized Rhombohedral Graphene
Tonghang Han, Zhengguang Lu, Yuxuan Yao +8
The quantum anomalous Hall effect (QAHE) is a robust topological phenomenon featuring quantized Hall resistance at zero magnetic field. We report the QAHE in a rhombohedral pentala…
Quadrupolar Excitons and Hybridized Interlayer Mott Insulator in a Trilayer Moiré Superlattice
Zhen Lian, Dongxue Chen, Lei Ma +13
Transition metal dichalcogenide (TMDC) moiré superlattices, owing to the moiré flatbands and strong correlation, can host periodic electron crystals and fascinating correlated phys…
Ferroelectric and anomalous quantum Hall states in bare rhombohedral trilayer graphene
Felix Winterer, Fabian R. Geisenhof, Noelia Fernandez +3
Nontrivial interacting phases can emerge in elementary materials. As a prime example, continuing advances in device quality have facilitated the observation of a variety of spontan…
Anomalous second-order skin modes in Floquet non-Hermitian systems
Chun-Hui Liu, Haiping Hu, Shu Chen +1
The non-Hermitian skin effect under open boundary conditions is widely believed to originate from the intrinsic spectral topology under periodic boundary conditions. If the eigensp…
Truncated Wigner approximation for the bosonic model of large spin baths
Mohsen Yarmohammadi, Katrin Bolsmann, Yvonne Ribbeheger +2
The central spin model has a wide applicability, it is ideally suited to describe a small quantum system, for instance a quantum bit, in contact to a bath of spins, e.g., nuclear s…
Two Types of 3D Quantum Hall Effects in Multilayer WTe
Xurui Zhang, Yeonghun Lee, Vivek Kakani +3
Interplay between the topological surface states and bulk states gives rise to diverse exotic transport phenomena in topological materials. The recently proposed Weyl orbit in topo…
A Nanometer-Thick Oxide Semiconductor Transistor with Ultra-High Drain Current
Zehao Lin, Mengwei Si, Vahid Askarpour +12
High drive current is a critical performance parameter in semiconductor devices for high-speed, low-power logic applications or high-efficiency, high-power, high-speed radio freque…
Higher-order topological corner states induced solely by onsite potentials with mirror symmetry
Ya-Jie Wu, Wen He, Ning Li +2
Higher-order topological insulators have triggered great interests because of exhibitions of non-trivial bulk topology on lower-dimensional boundaries like corners and hinges. Whil…
Focused Surface Acoustic Wave induced nano-oscillator based reservoir computing
Md. Fahim F. Chowdhury, Walid Al Misba, Md Mahadi Rajib +4
We demonstrate using micromagnetic simulations that a nanomagnet array excited by Surface Acoustic Waves (SAWs) can work as a reservoir that can classify sine and square waves with…
Quantum cascade of new correlated phases in trigonally warped bilayer graphene
Anna M. Seiler, Fabian R. Geisenhof, Felix Winterer +5
Divergent density of states offers the unique opportunity to explore a wide variety of correlated electron physics. In the thinnest limit, this has been predicted and verified in t…
Room-temperature quantum spin Hall edge state in a higher-order topological insulator BiBr
Nana Shumiya, Md Shafayat Hossain, Jia-Xin Yin +24
Room-temperature realization of macroscopic quantum phenomena is one of the major pursuits in fundamental physics. The quantum spin Hall state, a topological quantum phenomenon tha…
Massive Dirac fermions in moiré superlattices: a route towards topological flat minibands
Ying Su, Heqiu Li, Chuanwei Zhang +2
We demonstrate a generic mechanism to realize topological flat minibands by confining massive Dirac fermions in a periodic moiré potential, which can be achieved in a heterobilayer…
Acoustic Möbius insulators from projective symmetry
Tianzi Li, Juan Du, Qicheng Zhang +4
Symmetry plays a critical role in classifying phases of matter. This is exemplified by how crystalline symmetries enrich the topological classification of materials and enable unco…
Tunable quantum anomalous Hall octet driven by orbital magnetism in bilayer graphene
Fabian R. Geisenhof, Felix Winterer, Anna M. Seiler +4
The quantum anomalous Hall (QAH) effect - a macroscopic manifestation of chiral band topology at zero magnetic field - has only been experimentally realized by magnetic doping of t…
Skyrmion Logic Clocked via Voltage Controlled Magnetic Anisotropy
Benjamin W. Walker, Can Cui, Felipe Garcia-Sanchez +3
Magnetic skyrmions are exciting candidates for energy-efficient computing due to their non-volatility, detectability,and mobility. A recent proposal within the paradigm of reversib…