307 citations · 1.5k across the 26 of their papers we have counts for
25 papers
Contrasting Spin Excitations in Octahedral and Square-Planar n=8 Ruddlesden-Popper Nickelates
K. Scott, H. LaBollita, G. A. Pan +15
The discovery of superconductivity in reduced square-planar nickelates marked a major advance in identifying structural and electronic analogs to the high- cuprates. The more…
Topotactic oxidation of Ruddlesden-Popper nickelates reveals new structural family: oxygen-intercalated layered perovskites
Dan Ferenc Segedin, Jinkwon Kim, Harrison LaBollita +20
Layered perovskites such as the Dion-Jacobson, Ruddlesden-Popper, and Aurivillius families host a wide range of correlated electron phenomena, from high-temperature superconductivi…
Unconventional polaronic ground state in superconducting LiTiO
Zubia Hasan, Grace A. Pan, Harrison LaBollita +23
Geometrically frustrated lattices can display a range of correlated phenomena, ranging from spin frustration and charge order to dispersionless flat bands due to quantum interferen…
Magnetic excitations in NdNiO Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering
Sophia F. R. TenHuisen, Grace A. Pan, Qi Song +16
Magnetic interactions are thought to play a key role in the properties of many unconventional superconductors, including cuprates, iron pnictides, and square-planar nickelates. Sup…
Valency, charge-transfer, and orbital-dependent correlation in bilayer nickelates Nd3Ni2O7
Daisuke Takegami, Takaki Okauchi, Edgar Abarca Morales +14
We examine the bulk electronic structure of Nd3Ni2O7 using Ni 2p core-level hard x-ray photoemission spectroscopy combined with density functional theory + dynamical mean-field the…
Resolving Structural Origins for Superconductivity in Strain-Engineered LaNiO Thin Films
Lopa Bhatt, Abigail Y. Jiang, Eun Kyo Ko +13
The discovery of high-temperature superconductivity in bulk LaNiO under high hydrostatic pressure and, more recently, biaxial compression in epitaxial thin films has ig…
Hydrogen is not necessary for superconductivity in topotactically reduced nickelates
Purnima P. Balakrishnan, Dan Ferenc Segedin, Lin Er Chow +19
A key open question in the study of layered superconducting nickelate films is the role that hydrogen incorporation into the lattice plays in the appearance of the superconducting…
3D oxygen vacancy order and defect-property relations in multiferroic (LuFeO)/(LuFeO) superlattices
K. A. Hunnestad, H. Das, C. Hatzoglou +7
Oxide heterostructures exhibit a vast variety of unique physical properties. Examples are unconventional superconductivity in layered nickelates and topological polar order in (PbT…
Limits to the strain engineering of layered square-planar nickelate thin films
Dan Ferenc Segedin, Berit H. Goodge, Grace A. Pan +15
The layered square-planar nickelates, NdNiO, are an appealing system to tune the electronic properties of square-planar nickelates via dimensionality; indeed…
Antiferromagnetic metal phase in an electron-doped rare-earth nickelate
Qi Song, Spencer Doyle, Grace A. Pan +28
Long viewed as passive elements, antiferromagnetic materials have emerged as promising candidates for spintronic devices due to their insensitivity to external fields and potential…
Epitaxy of hexagonal ABO quantum materials
Johanna Nordlander, Margaret A. Anderson, Charles M. Brooks +2
Hexagonal O oxides (, = cation) are a rich materials class for realizing novel quantum phenomena. Their hexagonal symmetry, oxygen trigonal bipyramid coordination an…
Synthesis and electronic properties of NdNiO Ruddlesden-Popper nickelate thin films
Grace A. Pan, Qi Song, Dan Ferenc Segedin +14
The rare-earth nickelates possess a diverse set of collective phenomena including metal-to-insulator transitions, magnetic phase transitions, and, upon chemical reduction, supercon…
Superconductivity in a quintuple-layer square-planar nickelate
Grace A. Pan, Dan Ferenc Segedin, Harrison LaBollita +18
Since the discovery of high-temperature superconductivity in the copper oxide materials, there have been sustained efforts to both understand the origins of this phase and discover…
Dimensionality-induced change in topological order in multiferroic oxide superlattices
Megan E. Holtz, Elliot S. Padgett, Rachel Steinhardt +5
We construct ferroelectric (LuFeO3)m/(LuFe2O4) superlattices with varying index m to study the effect of confinement on topological defects. We observe a thickness-dependent transi…
A high-energy density antiferroelectric made by interfacial electrostatic engineering
Julia A. Mundy, Colin A. Heikes, Bastien F. Grosso +11
Dielectric capacitors hold a tremendous advantage for energy storage due to their fast charge/discharge times and stability in comparison to batteries and supercapacitors. A key li…
Electron Accumulation and Emergent Magnetism in LaMnO3/SrTiO3 Heterostructures
Zuhuang Chen, Zhanghui Chen, Z. Q. Liu +19
Emergent phenomena at polar-nonpolar oxide interfaces have been studied intensely in pursuit of next-generation oxide electronics and spintronics. Here we report the disentanglemen…
Magnetic Structure and Ordering of Multiferroic Hexagonal LuFeO3
Steven M. Disseler, Julie A. Borchers, Charles M. Brooks +12
We report on the magnetic structure and ordering of hexagonal LuFeO3 films grown by molecular-beam epitaxy (MBE) on YSZ (111) and Al2O3 (0001) substrates. Using a set of complement…
Atomically precise interfaces from non-stoichiometric deposition
Yuefeng Nie, Ye Zhu, Che-hui Lee +8
Complex oxide heterostructures display some of the most chemically abrupt, atomically precise interfaces, which is advantageous when constructing new interface phases with emergent…
Epitaxial Growth of VO by Periodic Annealing
J. W. Tashman, J. H. Lee, H. Paik +9
We report the growth of ultrathin VO films on rutile TiO (001) substrates via reactive molecular-beam epitaxy. The films were formed by the cyclical deposition of amorp…
Hetero-epitaxial EuO Interfaces Studied by Analytic Electron Microscopy
Julia A. Mundy, Daniel Hodash, Alexander Melville +6
With nearly complete spin polarization, the ferromagnetic semiconductor europium monoxide could enable next-generation spintronic devices by providing efficient ohmic spin injectio…
Quantum many-body interactions in digital oxide superlattices
Eric J. Monkman, Carolina Adamo, Julia A. Mundy +7
Controlling the electronic properties of interfaces has enormous scientific and technological implications and has been recently extended from semiconductors to complex oxides whic…
LaAlO3 stoichiometry found key to electron liquid formation at LaAlO3/SrTiO3 interfaces
M. P. Warusawithana, C. Richter, J. A. Mundy +17
Emergent phenomena, including superconductivity and magnetism, found in the two-dimensional electron liquid (2-DEL) at the interface between the insulators LaAlO3 and SrTiO3 distin…
3-D Tracking and Visualization of Hundreds of Pt-Co Fuel Cell Nanocatalysts During Electrochemical Aging
Yingchao Yu, Huolin L. Xin, Robert M. Hovden +5
We present an electron tomography method that allows for the identification of hundreds of electrocatalyst nanoparticles with one-to-one correspondence before and after electrochem…
Data Processing For Atomic Resolution EELS
Paul Cueva, Robert Hovden, Julia A. Mundy +2
The high beam current and sub-angstrom resolution of aberration-corrected scanning transmission electron microscopes has enabled electron energy loss spectroscopic (EELS) mapping w…