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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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18 papers · 2 filters
Size-Dependent Structural Phase Transitions in SrTiO3 Nanoparticles
Han Zhang, Sizhan Liu, Megan E. Scofield +5
Understanding the structural phase diagram of nano scale SrTiO3 has important implications on the basic physics and applications of the general class of transition metal oxide pero…
Manipulating the Polar mismatch at LaNiO3/SrTiO3 (111) Interface
Mohammad Saghayezhian, Zhen Wang, Hangwen Guo +3
Heteroepitaxial growth of transition-metal oxide films on the open (111) surface of SrTiO3 results in significant restructuring due to the polar mismatch. Monitoring the structural…
Disorder-driven topological phase transition in Bi2Se3 films
Matthew Brahlek, Nikesh Koirala, Maryam Salehi +16
Topological insulators (TI) are a phase of matter that host unusual metallic states on their surfaces. Unlike the states that exist on the surface of conventional materials, these…
Evidence of superconductivity-induced phonon spectra renormalization in alkali-doped iron selenides
M. Opačić, N. Lazarević, M. Šćepanović +4
Polarized Raman scattering spectra of superconducting KFeSe and nonsuperconducting KFeCoSe single crystals were measured in a temperatur…
Spontaneous decays of magneto-elastic excitations in noncollinear antiferromagnet (Y,Lu)MnO3
Joosung Oh, Manh Duc Le, Ho-Hyun Nahm +12
When magnons and phonons, the fundamental quasiparticles of the solid, are coupled to one another, they form a new hybrid quasi-particle, leading to novel phenomena and interesting…
Anomalous orbital structure in a spinel-perovskite interface -AlO/SrTiO
Yanwei Cao, Xiaoran Liu, P. Shafer +8
In all archetypical reported (001)-oriented perovskite heterostructures, it has been deduced that the preferential occupation of two-dimensional electron gases is in-plane $d_\text…
Origins of Large Voltage Hysteresis in High Energy-Density Metal Fluoride Lithium-Ion Battery Conversion Electrodes
Linsen Li, Ryan Jacobs, Peng Gao +4
Metal fluoride and oxides can store multiple lithium-ions through conversion chemistry to enable high energy-density lithium-ion batteries. However, their practical applications ha…
Linearized self-consistent quasiparticle GW method: Application to semiconductors and simple metals
Andrey L. Kutepov, Viktor S. Oudovenko, Gabriel Kotliar
We present a code implementing the linearized self-consistent quasiparticle GW method (scQPGW) in the LAPW basis. Our approach is based on the linearization of the self-energy arou…
Charge density wave modulation and gap measurements in CeTe
Uros Ralevic, Nenad Lazarevic, Andreas Baum +7
We present a study of charge density wave (CDW) ordering in CeTe at room temperature using a scanning tunneling microscope and Raman spectroscopy. Two characteristic CDW orderi…
Combined single crystal polarized XAFS and XRD at high pressure: probing the interplay between lattice distortions and electronic order at multiple length scales in high cuprates
Gilberto Fabbris, Markus Hücker, Genda Gu +2
Some of the most exotic material properties derive from electronic states with short correlation length (~10-500 Å), suggesting that the local structural symmetry may play a releva…
Direct Observation of Dynamic Symmetry Breaking above Room Temperature in Methylammonium Lead Iodide Perovskite
Alexander N. Beecher, Octavi E. Semonin, Jonathan M. Skelton +7
Lead halide perovskites such as methylammonium lead triiodide (MAPI) have outstanding optical and electronic properties for photovoltaic applications, yet a full understanding of h…
The Non-Perturbative Quantum Nature of the Dislocation-Phonon Interaction
Mingda Li, Zhiwei Ding, Qingping Meng +5
Despite the long history of dislocation-phonon interaction studies, there are many problems that have not been fully resolved during this development. These include an incompatibil…
Raman spectroscopy of K_xCo_{2-y}Se_2 single crystals near the ferromagnet-paramagnet transition
M. Opačić, N. Lazarević, M. M. Radonjić +6
Polarized Raman scattering spectra of the K_xCo_{2-y}Se_2 single crystals reveal the presence of two phonon modes, assigned as of the A_{1g} and B_{1g} symmetry. Absence of additio…
Low vibration high numerical aperture automated variable temperature Raman microscope
Yao Tian, Anjan A. Reijnders, Gavin B. Osterhoudt +8
Raman micro-spectroscopy is well suited for studying a variety of properties and has been applied to wide- ranging areas. Combined with tuneable temperature, Raman spectra can offe…
Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2
Lijun Li, Kefeng Wang, D. Graf +3
We report two-dimensional quantum transport and Dirac fermions in BaMnBi2 single crystals. BaMnBi2 is a layered bad metal with highly anisotropic conductivity and magnetic order be…
Tunable inverse topological heterostructure utilizing
Matthew Brahlek, Nikesh Koirala, Jianpeng Liu +6
In typical topological insulator (TI) systems the TI is bordered by a non-TI insulator, and the surrounding conventional insulators, including vacuum, are not generally treated as…
Beyond a phenomenological description of magnetostriction
A. H. Reid, X. Shen, P. Maldonado +28
We use ultrafast x-ray and electron diffraction to disentangle spin-lattice coupling of granular FePt in the time domain. The reduced dimensionality of single-crystalline FePt nano…
Thermally triggered phononic gaps in liquids at THz scale
Dima Bolmatov, Mikhail Zhernenkov, Dmitry Zav'yalov +3
In this paper we present inelastic X-ray scattering experiments in a diamond anvil cell and molecular dynamic simulations to investigate the behavior of phononic excitations in liq…