201 citations · 695 across the 24 of their papers we have counts for
25 papers
Photoresist-Free Lithography via Light-Induced Redox Patterning of Oxide Thin Films
Johannes Frantti, Yukari Fujioka, Christopher Rouleau +2
Lithographic patterning of nanoscale devices typically depends on photoresists, wet processing and multistep pattern-transfer workflows that impose both environmental and scaling c…
Autonomous synthesis of thin film materials with pulsed laser deposition enabled by in situ spectroscopy and automation
Sumner B. Harris, Arpan Biswas, Seok Joon Yun +5
Synthesis of thin films has traditionally relied upon slow, sequential processes carried out with substantial human intervention, frequently utilizing a mix of experience and seren…
Imaging Strain-Localized Single-Photon Emitters in Layered GaSe below the Diffraction Limit
Weijun Luo, Benjamin Lawrie, Alexander Puretzky +6
Nanoscale strain control of exciton funneling is an increasingly critical tool for the scalable production of single photon emitters (SPEs) in two-dimensional materials. However, c…
Deterministic Localization of Strain-induced Single-photon Emitters in Multilayer GaSe
Weijun Luo, Alexander Puretzky, Benjamin Lawrie +7
Nanoscale strain has emerged as a powerful tool for controlling single-photon emitters (SPEs) in atomically thin transition metal dichalcogenides (TMDCs)(1, 2). However, quantum em…
Correlative nanoscale imaging of strained hBN spin defects
David Curie, Jaron T. Krogel, Lukas Cavar +11
Spin defects like the negatively charged boron vacancy color center () in hexagonal boron nitride (hBN) may enable new forms of quantum sensing with near-surface defects in…
Nearly-Resonant Crystalline-Phononic Coupling in Quantum Spin Liquid Candidate CsYbSe
Yun-Yi Pai, Claire E. Marvinney, Liangbo Liang +10
CsYbSe, a recently identified quantum spin liquid (QSL) candidate, exhibits strong crystal electric field (CEF) excitations. Here, we identify phonon and CEF modes with Raman s…
Phonon modes and Raman signatures of MnBi2nTe3n+1 (n=1,2,3,4) magnetic topological heterostructures
Yujin Cho, Jin Ho Kang, Liangbo Liang +8
An intrinsic antiferromagnetic topological insulator can be realized by intercalating Mn-Te bilayer chain in a topological insulator, . $\m…
Fluctuation-driven, topology-stabilized order in a correlated nodal semimetal
Nathan C. Drucker, Thanh Nguyen, Fei Han +19
The interplay between strong electron correlation and band topology is at the forefront of condensed matter research. As a direct consequence of correlation, magnetism enriches top…
Photochromism in a Hexagonal Boron Nitride Single Photon Emitter
Matthew A. Feldman, Claire E. Marvinney, Alexander A. Puretzky +1
Solid-state single-photon emitters (SPEs) such as the bright, stable, room-temperature defects within hexagonal boron nitride (hBN) are of increasing interest for quantum informati…
Position Sensitive Response of a Single-Pixel Large-Area SNSPD
Claire E. Marvinney, Brian E. Lerner, Alexander A. Puretzky +2
Superconducting nanowire single photon detectors (SNSPDs) are typically used as single-mode-fiber-coupled single-pixel detectors, but large area detectors are increasingly critical…
Spectroscopic Signatures of Nonlocal Interfacial Coupling in Superconducting FeSe/SrTiO3 Heterostructures
Nina Andrejevic, Fei Han, Thanh Nguyen +10
The mechanism of enhanced superconductivity in the one unit-cell (1UC) FeSe film on a SrTiO3 (STO) substrate has stimulated significant research interest but remains elusive. Using…
Room-temperature insulating ferromagnetic (Ni,Co)1+2xTi1-xO3 thin films
Yukari Fujioka, Johannes Frantti, Christopher Rouleau +6
Insulating uniaxial room-temperature ferromagnets are a prerequisite for commonplace spin wave-based devices, the obstacle in contemporary ferromagnets being the coupling of ferrom…
In Quest of a Ferromagnetic Insulator -- Structure Controlled Magnetism in Mg-Ti-O Thin Films
Johannes Frantti, Yukari Fujioka, Christopher Rouleau +5
Ferromagnetic insulator thin films can convey information by spin waves, avoiding charge displacement and Eddy current losses. The sparsity of high-temperature insulating ferromagn…
Lattice distortion in the spin-orbital entangled state in RVO3 perovskites
J. -Q. Yan, W. Tian, H. B. Cao +10
We report a thorough study of YLaVO single crystals by measuring magnetic properties, specific heat, thermal conductivity, x-ray and neutron diffraction with th…
Phonon-induced multi-color correlations in hBN single-photon emitters
Matthew Feldman, Alex Puretzky, Lucas Lindsay +5
Color centers in hexagonal boron nitride have shown enormous promise as single-photon sources, but a clear understanding of electron-phonon interaction dynamics is critical to thei…
High-temperature magnetostructural transition in van der Waals-layered a-MoCl3
Michael A. McGuire, Jiaqiang Yan, Paula Lampen-Kelley +9
The crystallographic and magnetic properties of the cleavable 4d3 transition metal compound a-MoCl3 are reported, with a focus on the behavior above room temperature. Crystals were…
Room-Temperature Electron-Hole Liquid in Monolayer MoS2
Yiling Yu, Alexander Bataller, Robert Younts +6
Excitons in semiconductors are usually non interacting and behave like an ideal gas, but may condense to a strongly correlated liquid like state, i.e. electron hole liquid (EHL), a…
Interlayer bond polarizability model for stacking-dependent low-frequency Raman scattering in layered materials
Liangbo Liang, Alexander A. Puretzky, Bobby G. Sumpter +1
Two-dimensional (2D) layered materials have been extensively studied owing to their fascinating and technologically relevant properties. Their functionalities can be often tailored…
Nickel-cobalt-titanate thin films - new sustainable magnetic oxides
Yukari Fujioka, Johannes Frantti, Christopher Rouleau +2
Single phase nickel-cobalt-titanate thin films with a formula A1+2xTi1-xO3, where A is Ni2+,Co2+ and -0.25<x<1, were grown by pulsed laser deposition on sapphire substrates. There…
Phonon Localization in Heat Conduction
Maria N. Luckyanova, Jonathan Mendoza, Hong Lu +9
Departures in phonon heat conduction from diffusion have been extensively observed in nanostructures through their thermal conductivity reduction and largely explained with classic…
Observation of Low-frequency Interlayer Breathing Modes in Few-layer Black Phosphorus
Xi Ling, Liangbo Liang, Shengxi Huang +6
As a new two-dimensional layered material, black phosphorus (BP) is a promising material for nanoelectronics and nano-optoelectronics. We use Raman spectroscopy and first-principle…
Phase transitions and thermal-stress-induced structural changes in a ferroelectric Pb(Zr0.80Ti0.20)O3 single crystal
J. Frantti, Y. Fujioka, A. Puretzky +4
A single crystal of lead-zirconate-titanate (PZT), composition Pb(Zr0.80Ti0.20)O3, was studied by polarized-Raman scattering as a function of temperature. Raman spectra reveal that…
A statistical model approximation for perovskite solid-solutions: a Raman study of lead-zirconate-titanate single crystal
J. Frantti, Y. Fujioka, A. Puretzky +3
Lead titanate (PbTiO3) is a classical example of a ferroelectric perovskite oxide illustrating a displacive phase transition accompanied by a softening of a symmetry-breaking mode.…
Investigation of Gd3N@C2n (40 < n < 44) family by Raman and inelastic electron tunneling spectroscopy
Brian G. Burke, Jack Chan, Keith A. Williams +7
The structure and vibrational spectrum of Gd3N@C80 is studied through Raman and inelastic electron tunneling spectroscopy (IETS) as well as density functional theory (DFT) and univ…