User profiles for Sky Cheung
Sky CheungDepartment of Physics, Columbia University Verified email at phys.columbia.edu Cited by 794 |
On the global geometry of sphere-constrained sparse blind deconvolution
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 …
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 …
cluster superatomic building blocks, several criteria must be met. Reproducible syntheses …
Volume-wise destruction of the antiferromagnetic Mott insulating state through quantum tuning
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 …
tuned by chemical substitution (RENiO 3 ) or pressure (V 2 O 3 ), they exhibit a quantum …
Antiferromagnetism and hidden order in isoelectronic doping of
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 …
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
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 …
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 ()
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-…
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
Modern high-resolution microscopes are commonly used to study specimens that have dense
and aperiodic spatial structure. Extracting meaningful information from images obtained …
and aperiodic spatial structure. Extracting meaningful information from images obtained …
: A diluted ferromagnetic semiconductor with -type carriers and isostructural to 122 iron-based superconductors
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 …
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, …
integrates control logic directly within language model (LM) prompts, facilitating complex, …
Disentangling superconducting and magnetic orders in using muon spin rotation
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 …
superconductors, NaFe 1 − x Ni x As , using single crystalline samples with Ni …