912 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Nanjing UniversityCN78 papers
- Centre National de la Recherche ScientifiqueFR49 papers
- Pennsylvania State UniversityUS48 papers
- Xi'an Jiaotong UniversityCN43 papers
- Center for Astrophysics Harvard & SmithsonianUS41 papers
- National Laboratory of Solid State Microstructures39 papers
- Argonne National LaboratoryUS38 papers
- Goddard Space Flight CenterUS38 papers
- Johns Hopkins UniversityUS31 papers
- Collaborative Innovation Center of Advanced MicrostructuresCN29 papers
- Université Paris-SaclayFR28 papers
- Tel Aviv UniversityIL26 papers
47 papers · 1 filter
Origins of GaN(0 0 0 1) surface reconstructions
S. Vezian, F. Semond, J. Massies +3
The reconstructions of the Ga polarity GaN(0 0 0 1) surface with and without trace amounts of arsenic and prepared by molecular beam epitaxy (MBE) have been studied with in situ re…
Thermal mirror buckling in freestanding graphene locally controlled by scanning tunneling microscopy
M. Neek-Amal, P. Xu, J. K. Schoelz +5
Knowledge of and control over the curvature of ripples in freestanding graphene are desirable for fabricating and designing flexible electronic devices, and recent progress in thes…
Unusual ultralow frequency fluctuations in freestanding graphene
P. Xu, M. Neek-Amal, S. D. Barber +5
Intrinsic ripples in freestanding graphene have been exceedingly difficult to study. Individual ripple geometry was recently imaged using scanning tunneling microscopy, but these m…
Self-Organized Platinum Nanoparticles on Freestanding Graphene
Peng Xu, Lifeng Dong, Mehdi Neek-Amal +8
Freestanding graphene membranes were successfully functionalized with platinum nanoparticles (Pt NPs). High-resolution transmission electron microscopy revealed a homogeneous distr…
Polarization-dependent exciton dynamics in tetracene single crystals
Bo Zhang, Chunfeng Zhang, Yanqing Xu +6
We conduct polarization-dependent ultrafast spectroscopy to study the dynamics of singlet fission in tetracene single crystals. The spectrotemporal species for singlet and triplet…
Test ideals in rings with finitely generated anti-canonical algebras
Alberto Chiecchio, Florian Enescu, Lance Edward Miller +1
Many results are known about test ideals and -singularities for -Gorenstein rings. In this paper we generalize many of these results to the case when the symbolic Rees…
Simulated scanning tunneling microscopy images of few-layer-phosphorus capped by graphene and hexagonal boron nitride monolayers
Pablo Rivero, Cedric M. Horvath, Zhen Zhu +3
Elemental phosphorous is believed to have several stable allotropes that are energetically nearly degenerate, but chemically reactive. To prevent chemical degradation under ambient…
Positive factorizations of mapping classes
R. Inanc Baykur, Naoyuki Monden, Jeremy Van Horn-Morris
In this article, we study the maximal length of positive Dehn twist factorizations of surface mapping classes. In connection to fundamental questions regarding the uniform topology…
Stability and properties of high-buckled two-dimensional tin and lead
Pablo Rivero, Jia-An Yan, Victor M. Garcia-Suarez +2
In realizing practical non-trivial topological electronic phases stable structures need to be determined first. Tin and lead do stabilize an optimal two-dimensional high-buckled ph…
Photonic Floquet Topological Insulator in an Atomic Ensemble
Yiqi Zhang, Zhenkun Wu, Milivoj R. Belić +4
We demonstrate the photonic Floquet topological insulator (PFTI) in an atomic vapor with nonlinear susceptibilities. The interference of three coupling fields splits the energy lev…
The G+M eclipsing binary V530 Orionis: A stringent test of magnetic stellar evolution models for low-mass stars
G. Torres, C. H. Sandberg Lacy, K. Pavlovski +4
We report extensive photometric and spectroscopic observations of the 6.1-day period, G+M-type detached double-lined eclipsing binary V530 Ori, an important new benchmark system fo…
Prediction of a Stable Post-Post-Perovskite Structure from First Principles
Changsong Xu, Bin Xu, Yurong Yang +6
A novel stable crystallographic structure is discovered in a variety of ABO3, ABF3 and A2O3 compounds (including materials of geological relevance, prototypes of multiferroics, exh…
Theta-regularity of curves and Brill-Noether loci
Luigi Lombardi, Wenbo Niu
We provide a bound on the -regularity of an arbitrary reduced and irreducible curve embedded in a polarized abelian variety in terms of its degree and codimension. This is an "a…
Gradient estimates and the fundamental solution for higher-order elliptic systems with rough coefficients
Ariel Barton
We extend several well-known tools from the theory of second-order divergence-form elliptic equations to the case of higher-order equations. These tools are the Caccioppoli inequal…
Constraining dark matter halo profiles and galaxy formation models using spiral arm morphology. II. Dark and stellar mass concentrations for 13 nearby face-on galaxies
Marc S. Seigar, Benjamin L. Davis, Joel Berrier +1
We investigate the use of spiral arm pitch angles as a probe of disk galaxy mass profiles. We confirm our previous result that spiral arm pitch angles (P) are well correlated with…
Predicting a Ferrimagnetic Phase of Zn2FeOsO6 with Strong Magnetoelectric Coupling
P. S. Wang, W. Ren, L. Bellaiche +1
Multiferroic materials, in which ferroelectric and magnetic ordering coexist, are of fundamental interest for the development of novel memory devices that allow for electrical writ…
Correlation between amygdala BOLD activity and frontal EEG asymmetry during real-time fMRI neurofeedback training in patients with depression
Vadim Zotev, Han Yuan, Masaya Misaki +4
Real-time fMRI neurofeedback (rtfMRI-nf) is an emerging approach for studies and novel treatments of major depressive disorder (MDD). EEG performed simultaneously with an rtfMRI-nf…
The Szegö kernel on a class of noncompact CR manifolds of high codimension
Andrew Raich, Michael Tinker
We generalize Nagel's formula for the Szegö kernel and use it to compute the Szegö kernel on a class of noncompact CR manifolds whose tangent space decomposes into one complex dire…
Emergent properties hidden in plane view: Strong electronic correlations at oxide interfaces
Jak Chakhalian, John W. Freeland, Andrew J. Millis +2
Finding new collective electronic states in materials is one of the fundamental goals of condensed matter physics. Atomic-scale superlattices formed from transition metal oxides ar…
Electric dipole sheets in BaTiO/BaZrO superlattices
Zhijun Jiang, Bin Xu, Fei Li +2
We investigate two-dimensional electric dipole sheets in the superlattice made of BaTiO and BaZrO using first-principles-based Monte-Carlo simulations and density funct…
On the second homology group of the Torelli subgroup of Aut(F_n)
Matthew B. Day, Andrew Putman
Let IA_n be the Torelli subgroup of Aut(F_n). We give an explicit finite set of generators for H_2(IA_n) as a GL_n(Z)-module. Corollaries include a version of surjective representa…
Quantum noise effects with Kerr nonlinearity enhancement in coupled gain-loss waveguides
Bing He, Shu-Bin Yan, Jing Wang +1
It is generally difficult to study the dynamical properties of a quantum system with both inherent quantum noises and non-perturbative nonlinearity. Due to the possibly drastic int…
First-principles study of the multi-mode anti-ferroelectric transition of PbZrO3
Jorge Iniguez, Massimiliano Stengel, Sergey Prosandeev +1
We have studied ab initio the phase transition in PbZrO3, a perovskite oxide usually presented as the prototypic anti-ferroelectric material. Our work reveals the crucial role that…
Membrane amplitude and triaxial stress in twisted bilayer graphene deciphered using first-principles directed elasticity theory and scanning tunneling microscopy
M. Neek-Amal, P. Xu, D. Qi +7
Twisted graphene layers produce a moiré pattern (MP) structure with a predetermined wavelength for given twist angle. However, predicting the membrane corrugation amplitude for any…