Publications

Sep, 2026

Journal

Unconventional bipartite entanglement in the quantum dimer magnet Yb2Be2SiO7

Sep, 2026

Journal

Spin Dynamics of the Spin-1 Triangular Lattice Heisenberg Antiferromagnet K2⁢Ni⁢(SeO3)2

Aug, 2026

Journal

Close Proximity to a Quantum Phase Transition in TmZn2⁢GaO5

TmZn2⁢GaO5 is a newly synthesized triangular lattice magnet that exhibits a unique quantum phase characterized by strong Ising anisotropy, a pseudodoublet crystal electric field ground state, and a low-energy gapped excitation at the 𝐾 point. Unlike its well-known counterparts, TmMgGa⁢O4 and YbMgGa⁢O4, this material crystallizes in a distinct hexagonal structure, leading t…

Jul, 2026

Journal

Multi-Spectroscopic Determination of Exchange Coupling, Zero-Field Splitting, and g-Matrices in Radical-Bridged Dinuclear Fe(III) Complexes

When the energy gap, Δ, between the lowest-lying spin manifolds within a spin-exchange coupled molecule approaches Δ/kB ≈ 300 K, the traditional temperature-dependence (T < 400 K) of the molar magnetic susceptibility is not always a reliable way to obtain a good estimate of intramolecular exchange couplings. We develop a spectroscopic approach capable of accurately paramet…

Apr, 2026

Journal

Libration of hydroxyl groups in layered aluminum (oxy)hydroxides and other material analogs: insights from inelastic neutron scattering and theory

We analyzed the hydroxyl librational signatures of five structurally related aluminum (oxy)hydroxides, using inelastic neutron scattering (INS) and plane-wave lattice dynamics simulations. A clear trend across these aluminum-containing phases illustrates the relationship between hydrogen bonding, local atomic structure, and the spectral location and profile of the libratio…

Apr, 2026

Journal

Altered morphology and diffusivity of water confined in MXenes: Machine learning–accelerated computations combined with experiments

Nanoconfined water exhibits unique properties compared to bulk water due to limited quantities, frustrated hydrogen bonding, and surface interactions, which are fundamental for energy storage and transport applications. We integrate machine learning–accelerated ab initio molecular dynamics with x-ray diffraction (XRD) and inelastic neutron scattering (INS) to systematicall…

Feb, 2026

Journal

Structure and Dynamics of Water Confined in Transition Metal Carbide MXenes: Implications for Electrochemical Applications

Two-dimensional transition metal carbides and nitrides (MXenes) are an important family of electrochemically active 2D materials. MXenes combine high conductivity with hydrophilicity, making them attractive materials for many applications, including electrochemical energy storage, sensing, desalination, and others. In order to better understand the role of structure on MXe…

Feb, 2026

Journal

6⁢𝐻-perovskite dimer lattice with antiferromagnetic interactions: Ba3⁢Zn1−𝑥⁢Ca𝑥⁢Ru2⁢O9

We investigate the magnetic behavior of the 6⁢𝐻-perovskite dimer lattice Ba3⁢Zn1−𝑥⁢Ca𝑥⁢Ru2⁢O9 using analytical theory, density functional theory, inelastic neutron scattering, and modeling of historical magnetization and neutron-scattering data. A dimer mean-field theory built upon classical Luttinger–Tisza analysis generates a phase diagram revealing a transition from a n…

Dec, 2025

Journal

Observation of Unprecedented Fractional Magnetization Plateaus in a New Shastry-Sutherland Ising Compound

Geometrically frustrated magnetic systems, such as those based on the Shastry-Sutherland lattice (SSL), offer a rich playground for exploring unconventional magnetic states. The delicate balance between competing interactions in these systems leads to the emergence of novel phases. We present the characterization of Er2⁢Be2⁢GeO7, an SSL compound with Er3+ ions forming orth…

Dec, 2025

Journal

Ising spin ladders of orthopyroxene CoGeO3

We present thermodynamic and spectroscopic measurements for an orthopyroxene CoGeO3 with magnetic Co2+ ions that form quasi-one-dimensional ladders. We show that noncollinear magnetic order below 𝑇𝑁=32 K can be stabilized by a strong local easy-axis anisotropy of 𝑗eff=1/2 moments, which is induced by ligand octahedra distortions. Extraction of a magnetic Hamiltonian from i…

Nov, 2025

Journal

Quasielastic and Inelastic Neutron Scattering Study of Ultraconfined Water in Natural Mordenite ((Ca,Na2,K2)Al2Si10O24·7H2O)

Mordenite ((Ca,Na2,K2)Al2Si10O24·7H2O) is a natural and synthetic nanoporous zeolite containing several channels of different sizes in its structure. Because of this, its structure provides an important opportunity to study the relationship between confined and ultraconfined water as these channels have sizes between those typical of these water environments. In this study…

Nov, 2025

Journal

Effects of γ-Irradiation, Cation Size, and Salt Concentration on the Aggregation of Boehmite Nanoplatelets

Effects of radiation on the aggregation of nanoplatelets of aluminum oxyhydroxide (boehmite) in slurries of M1+ cation nitrates have been observed using tumbler small- and ultra-small-angle neutron scattering. Nitrate solutions of H, Li, Na, K, and Rb at concentrations of 10–5, 10–3, 10–1, 2, and 4 molal were compared to the results for pure H2O. Primary aggregates consist…