User profiles for Sky Cheung

Sky Cheung

Department of Physics, Columbia University
Verified email at phys.columbia.edu
Cited by 794

On the global geometry of sphere-constrained sparse blind deconvolution

Y Zhang, Y Lau, H Kuo, S Cheung… - Proceedings of the …, 2017 - openaccess.thecvf.com
Blind deconvolution is the problem of recovering a convolutional kernel and an activation
signal from their convolution. This problem is ill-posed without further constraints or priors. This …

Ferromagnetic ordering in superatomic solids

…, CJ Arguello, BA Frandsen, SC Cheung… - Journal of the …, 2014 - ACS Publications
In order to realize significant benefits from the assembly of solid-state materials from molecular
cluster superatomic building blocks, several criteria must be met. Reproducible syntheses …

Volume-wise destruction of the antiferromagnetic Mott insulating state through quantum tuning

BA Frandsen, L Liu, SC Cheung, Z Guguchia… - Nature …, 2016 - nature.com
RENiO 3 (RE=rare-earth element) and V 2 O 3 are archetypal Mott insulator systems. When
tuned by chemical substitution (RENiO 3 ) or pressure (V 2 O 3 ), they exhibit a quantum …

Antiferromagnetism and hidden order in isoelectronic doping of

…, YP Cai, AM Hallas, T Medina, TJ Munsie, SC Cheung… - Physical Review B, 2016 - APS
We present muon spin rotation ( μ SR ) and susceptibility measurements on single crystals
of isoelectronically doped URu 2 − x T x Si 2 (T = Fe, Os) for doping levels up to 50%. Zero …

Intertwined magnetic, structural, and electronic transitions in

…, I Valmianski, AS McLeod, Z Guguchia, SC Cheung… - Physical Review B, 2019 - APS
We present a coordinated study of the paramagnetic-to-antiferromagnetic, rhombohedral-to-monoclinic,
and metal-to-insulator transitions in thin-film specimens of the classic Mott …

Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in ()

DW Tam, Y Song, H Man, SC Cheung, Z Yin, X Lu… - Physical Review B, 2017 - APS
We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial
pressure on the antiferromagnetic (AF) orthorhombic phase in BaFe 2 As 2 and its Co- and Ni-…

Dictionary learning in Fourier-transform scanning tunneling spectroscopy

SC Cheung, JY Shin, Y Lau, Z Chen, J Sun… - Nature …, 2020 - nature.com
Modern high-resolution microscopes are commonly used to study specimens that have dense
and aperiodic spatial structure. Extracting meaningful information from images obtained …

: A diluted ferromagnetic semiconductor with -type carriers and isostructural to 122 iron-based superconductors

…, Y Zhao, L Fu, Y Gu, G Zhi, BA Frandsen, SC Cheung… - Physical Review B, 2019 - APS
We report the successful synthesis of a 122 diluted ferromagnetic semiconductor with n -type
carriers, Ba ( Zn , Co ) 2 As 2 . Magnetization measurements show that the ferromagnetic …

CELI: Controller-Embedded Language Model Interactions

…, ACM Raja, JM Holman, LK Brady, SC Cheung… - arXiv preprint arXiv …, 2024 - arxiv.org
We introduce Controller-Embedded Language Model Interactions (CELI), a framework that
integrates control logic directly within language model (LM) prompts, facilitating complex, …

Disentangling superconducting and magnetic orders in using muon spin rotation

SC Cheung, Z Guguchia, BA Frandsen, Z Gong… - Physical Review B, 2018 - APS
Muon spin rotation and relaxation studies have been performed on a “111” family of iron-based
superconductors, NaFe 1 − x Ni x As , using single crystalline samples with Ni …