41 citations · 140 across the 22 of their papers we have counts for
23 papers
Magnetic Imaging of Macroscopic Spin Chirality Flipping
H. Miao, G. Fabbris, J. Bouaziz +12
Chirality is a fundamental organizing principle of correlated and topological states. In quantum magnets, chirality arises from the geometric twisting of spins and serves as an eme…
Intrinsic Even-Odd Thickness-Driven Anomalous Hall in Epitaxial MnBi2Te4 Thin Films
Debarghya Mallick, Simon Kim, An-Hsi Chen +12
We demonstrate precise control of magnetism in MnBi2Te4 thin films through careful synthesis by molecular beam epitaxy, achieving minimal defects and accurate layer thickness contr…
Active Learning for Tractable and Reproducible Pulsed Laser Deposition
Jackson S. Bentley, Christopher Rouleau, Ilia N. Ivanov +8
This paper shows how data-driven machine learning approaches can improve growth control, reproducibility, and physical insight in the pulsed laser deposition (PLD) growth of correl…
Strain patterning of flexomagnetism
Tamalika Samanta, Zachary T. LaDuca, An-Hsi Chen +15
Flexomagnetism, the coupling of magnetic ordering to strain gradients, provides access to novel symmetry-broken magnetic phases that cannot be accessed via uniform strain. However,…
Atomically Precise Electron Beam Sculpting of Bilayer h-BN: The Role of Crystallographic Orientation and Milling Strategy
Ondrej Dyck, Andrew R. Lupini, Ivan Vlassiouk +3
Achieving atomic precision in top-down manufacturing remains a fundamental challenge nanofabrication technology. Here, the focused electron beam of a scanning transmission electron…
Weak localization and universal conductance fluctuations in large area twisted bilayer graphene
Spenser Talkington, Debarghya Mallick, An-Hsi Chen +7
We study diffusive magnetotransport in highly p-doped large area twisted bilayer graphene in 1°, 7°, 9° and 20° samples. We report weak localization in twisted bilayer graphene for…
Persistent Fluctuating Superconductivity and Planckian Dissipation in Fe(Te,Se)
Jonathan Stensberg, Pok Man Tam, Xiaoyu Yuan +11
Increasingly intricate phase diagrams in new classes of superconductors host fascinating interactions between superconductivity, diverse quantum phases, and quantum critical dynami…
Nanosculpting lateral weak link junctions in superconducting Fe(Te,Se)/Bi2Te3 with focused Si++ ions and implications on vortex pinning
Debarghya Mallick, Sujoy Ghosh, An Hsi Chen +10
Superconductor-normal-superconductor (SC-N-SC) weak links enable Cooper-pair tunneling and serve as Josephson junctions (JJs) used in modern superconducting qubits. Conventional JJ…
Programmable phase selection between altermagnetic and non-centrosymmetric polymorphs of MnTe on InP via molecular beam epitaxy
An-Hsi Chen, Parul R. Raghuvanshi, Jacob Cook +19
Phase selecting nearly degenerate crystalline polymorphs during epitaxial growth can be challenging yet is critical to targeting physical properties for specific applications. Here…
Reversible Modification of Rashba States in Topological Insulators at Room Temperature by Edge Functionalization
Wonhee Ko, Seoung-Hun Kang, Qiangsheng Lu +7
Quantum materials with novel spin textures from strong spin-orbit coupling (SOC) are essential components for a wide array of proposed spintronic devices. Topological insulators ha…
Nucleation and Antiphase Twin Control in BiSe via Step-Terminated AlO Substrates
Alessandro R. Mazza, Jia Shi, Gabriel A. Vázquez-Lizardi +18
The epitaxial synthesis of high-quality 2D layered materials is an essential driver of both fundamental physics studies and technological applications. BiSe, a prototypical…
Terahertz Landau level spectroscopy of Dirac fermions in millimeter-scale twisted bilayer graphene
Benjamin F. Mead, Spenser Talkington, An-Hsi Chen +8
Exotic electronic physics including correlated insulating states and fractional Chern insulators have been observed in twisted bilayer graphene in a magnetic field when the Fermi v…
Quantized Magneto-Terahertz Effects in the Antiferromagnetic Topological Insulator MnBiTe Thin Films
Xingyue Han, An-Hsi Chen, Matthew Brahlek +1
MnBiTe (MBT) is an ideal platform for studying the interplay between magnetism and topology. Many exotic topological phenomena, such as the quantum anomalous Hall effect an…
Universal Superconductivity in FeTe and All-Iron-Based Ferromagnetic Superconductor Heterostructures
Hee Taek Yi, Xiong Yao, Deepti Jain +10
Ferromagnetism (FM) and superconductivity (SC) are two of the most famous macroscopic quantum phenomena. However, nature normally does not allow SC and FM to coexist without signif…
Polarization rotation in a ferroelectric BaTiO film through low-energy He-implantation
Andreas Herklotz, Robert Roth, Zhi Xiang Chong +6
Domain engineering in ferroelectric thin films is crucial for next-generation microelectronic and photonic technologies. Here, a method is demonstrated to precisely control domain…
Controlling structural phases of Sn through lattice engineering
Chandima Kasun Edirisinghe, Anjali Rathore, Taegeon Lee +15
Topology and superconductivity, two distinct phenomena offer unique insight into quantum properties and their applications in quantum technologies, spintronics, and sustainable ene…
Stoichiometry-induced ferromagnetism in altermagnetic candidate MnTe
Michael Chilcote, Alessandro R. Mazza, Qiangsheng Lu +22
The field of spintronics has seen a surge of interest in altermagnetism due to novel predictions and many possible applications. MnTe is a leading altermagnetic candidate that is o…
Interfacially enhanced superconductivity in Fe(Te,Se)/Bi4Te3 heterostructures
An-Hsi Chen, Qiangsheng Lu, Eitan Hershkovitz +13
Realizing topological superconductivity by integrating high-transition-temperature () superconductors with topological insulators can open new paths for quantum computing appl…
Embracing Disorder in Quantum Materials Design
A. R. Mazza, J. Yan, S. Middey +4
Many of the most exciting materials discoveries in fundamental condensed matter physics are made in systems hosting some degree of intrinsic disorder. While disorder has historical…
High entropy ceramics for applications in extreme environments
T. Z. Ward, R. P. Wilkerson, B. L. Musico +5
Compositionally complex materials have demonstrated extraordinary promise for structural robustness in extreme environments. Of these, the most commonly thought of are high entropy…
High-throughput combinatorial approach expedites the synthesis of a lead-free relaxor ferroelectric system
Di Zhang, Katherine J. Harmon, Michael J. Zachman +21
Developing novel lead-free ferroelectric materials is crucial for next-generation microelectronic technologies that are energy efficient and environment friendly. However, material…
Ferroelectric Semimetals with -Bi/SnSe van der Waals heterostructures and its Topological Currents
D. J. P. de Sousa, Seungjun Lee, Qiangsheng Lu +5
We show that proximity effects can be utilized to engineer van der Waals heterostructures (vd- WHs) displaying spin-ferroelectricity locking, where ferroelectricity and spin states…
Observation of 2D Weyl Fermion States in Epitaxial Bismuthene
Qiangsheng Lu, P. V. Sreenivasa Reddy, Hoyeon Jeon +20
A two-dimensional (2D) Weyl semimetal featuring a spin-polarized linear band dispersion and a nodal Fermi surface is a new topological phase of matter. It is a solid-state realizat…