881 citations · 2.3k across the 30 of their papers we have counts for
14 papers · 1 filter
Physically informed machine-learning algorithms for the identification of two-dimensional atomic crystals
Laura Zichi, Tianci Liu, Elizabeth Drueke +2
First isolated in 2004, graphene monolayers display unique properties and promising technological potential in next generation electronics, optoelectronics, and energy storage. The…
Ferro-rotational domain walls revealed by electric quadrupole second harmonic generation microscopy
Xiaoyu Guo, Rachel Owen, Austin Kaczmarek +9
Domain walls are ubiquitous in materials that undergo phase transitions driven by spontaneous symmetry breaking. Domain walls in ferroics and multiferroics have received tremendous…
Evidence of Noncollinear Spin Texture in Magnetic Moiré Superlattices
Hongchao Xie, Xiangpeng Luo, Zhipeng Ye +9
Moiré magnetism, parallel with moiré electronics that has led to novel correlated and topological electronic states, emerges as a new venue to design and control exotic magnetic ph…
A three-stage magnetic phase transition revealed in ultrahigh-quality van der Waals magnet CrSBr
Wenhao Liu, Xiaoyu Guo, Jonathan Schwartz +10
van der Waals (vdW) magnets are receiving ever-growing attention nowadays due to their significance in both fundamental research on low-dimensional magnetism and potential applicat…
Torsional Periodic Lattice Distortions and Diffraction of Twisted 2D Materials
Suk Hyun Sung, Yin Min Goh, Hyobin Yoo +12
Twisted 2D materials form complex moiré structures that spontaneously reduce symmetry through picoscale deformation within a mesoscale lattice. We show twisted 2D materials contain…
Twist engineering of the two-dimensional magnetism in double bilayer chromium triiodide homostructures
Hongchao Xie, Xiangpeng Luo, Gaihua Ye +12
Twist engineering, or the alignment of two-dimensional (2D) crystalline layers with desired orientations, has led to tremendous success in modulating the charge degree of freedom i…
Ultrafast Modulations And Detection of a Ferro-rotational Charge Density Wave Using Time-resolved Electric Quadrupole Second Harmonic Generation
Xiangpeng Luo, Dimuthu Obeysekera, Choongjae Won +7
We show the ferro-rotational nature of the commensurate charge density wave (CCDW) in - and track its dynamic modulations by temperature-dependent and time-reso…
Two-dimensional charge order stabilized in clean polytype heterostructures
Suk Hyun Sung, Noah Schnitzer, Steve Novakov +15
Compelling evidence suggests distinct correlated electron behavior may exist only in clean 2D materials such as 1T-TaS2. Unfortunately, experiment and theory suggest that extrinsic…
Tunable layered-magnetism-assisted magneto-Raman effect in a two-dimensional magnet
Wencan Jin, Zhipeng Ye, Xiangpeng Luo +13
We use a combination of polarized Raman spectroscopy experiment and model magnetism-phonon coupling calculations to study the rich magneto-Raman effect in the two-dimensional (2D)…
Second-order nonlinear optical and linear UV-VIS absorption properties of type-II multiferroic candidates RbFe(AO4)2 (A = Mo, Se, S)
Rachel Owen, Elizabeth Drueke, Charlotte Albunio +7
Motivated by the search for type-II multiferroics, we present a comprehensive optical study of a complex oxide family of type-II multiferroic candidates: RbFe(MoO4)2, RbFe(SeO4)2,…
Magnetic field-induced quantum phase transitions in a van der Waals magnet
Siwen Li, Zhipeng Ye, Xiangpeng Luo +10
Exploring new parameter regimes to realize and control novel phases of matter has been a main theme in modern condensed matter physics research. The recent discovery of 2D magnetis…
Observation of a ferro-rotational order coupled with second-order nonlinear optical fields
Wencan Jin, Elizabeth Drueke, Siwen Li +6
The ferro-rotational order, whose order parameter (OP) is an axial vector invariant under both time reversal (TR) and spatial inversion (SI) operations, is the last remaining categ…
Evolution of interlayer and intralayer magnetism in three atomically thin chromium trihalides
Hyun Ho Kim, Bowen Yang, Siwen Li +16
We conduct a comprehensive study of three different magnetic semiconductors, CrI, CrBr, and CrCl, by incorporating both few- and bi-layer samples in van der Waals tunne…
Visualizing Individual Nitrogen Dopants in Monolayer Graphene
Liuyan Zhao, Rui He, Kwang Taeg Rim +15
In monolayer graphene, substitutional doping during growth can be used to alter its electronic properties. We used scanning tunneling microscopy (STM), Raman spectroscopy, x-ray sp…