956 citations · 2k across the 20 of their papers we have counts for
21 papers
Exotic centrosymmetric phase of acentric urea under high pressure
Haw-Tyng Huang, Yedukondalu Neelam, Mei-Shuan Cheng +6
Urea is a simple prototype supramolecular crystal that exhibits rich polymorphism at low pressure due to broken and restored N-H-O hydrogen bonds. The high pressure polymorph (phas…
The tetragonal-cubic transition of davemaoite: Implications for lower mantle seismic anomalies
Yoshiyuki Okuda, Bin Chen, Juliana Peckenpaugh +5
Davemaoite (CaSiO3 perovskite) is the third most abundant mineral in Earth's lower mantle and a dominant phase in subducted oceanic crust. Its crystal structure is distorted (tetra…
Direct Evidence for Robust Bulk Band Gap Across the Charge Density Wave Transition in TiSe2
Turgut Yilmaz, Anil Rajapitamahuni, Muhammad Awais Fiaz +7
The mechanism driving the charge density wave (CDW) transition in TiSe2 has been debated for decades, with proposals ranging from an excitonic insulator to a lattice-driven instabi…
Observation of Conventional Near Room Temperature Superconductivity in Carbonaceous Sulfur Hydride
Hiranya Pasan, Elliot Snider, Sasanka Munasinghe +21
The phenomenon of high temperature superconductivity, approaching room temperature, has been realized in a number of hydrogen-dominant alloy systems under high pressure conditions1…
Pressure induced collapse of magnetic order in jarosite
Ryan A. Klein, James P. S. Walsh, Samantha M. Clarke +12
We report a pressure-induced phase transition in the frustrated kagomé material jarosite at ~45 GPa, which leads to the disappearance of magnetic order. Using a suite of experiment…
High-Resolution In-situ Synchrotron X-ray Studies of Inorganic Perovskite CsPbBr: New Symmetry Assignments and Structural Phase Transitions
S. Liu, A. R. DeFilippo, M. Balasubramanian +12
Perovskite photovoltaic ABX systems are being studied due to their high energy-conversion efficiencies with current emphasis placed on pure inorganic systems. In this work, syn…
Lattice frustration in spin-orbit Mott insulator Sr3Ir2O7 at high pressure
Jianbo Zhang, Dayu Yan, Sorb Yesudhas +13
The intertwined charge, spin, orbital, and lattice degrees of freedom could endow 5d compounds with exotic properties. Current interest is focused on electromagnetic interactions i…
Nature of the Structural Symmetries Associated with Hybrid Improper Ferroelectricity in Ca3X2O7
S. Liu, H. Zhang, S. Ghose +8
In hybrid improper ferroelectric systems, polarization arises from the onset of successive nonpolar lattice modes. In this work, measurements and modeling were performed to determi…
Synthesis and electronic structure characterization of diamane
Feng Ke, Lingkong Zhang, Yabin Chen +13
Atomically thin graphite, known as graphene, has been a marvel in material science because of its exceptional properties, novel physics and promising applications. Atomically thin…
Spectroscopic and first principle DFT+eDMFT study of complex structural, electronic, and vibrational properties of MoO (=Fe, Mn) polar magnets
T. N. Stanislavchuk, G. L. Pascut, A. P. Litvinchuk +8
Optical spectroscopy, X-ray diffraction measurements, density functional theory (DFT) and density functional theory + embedded dynamical mean field theory (DFT+eDMFT) have been use…
Simultaneous band gap narrowing and carrier lifetime prolongation of organic-inorganic trihalide perovskites
Lingping Kong, Gang Liu, Jue Gong +12
The organic-inorganic hybrid lead trihalide perovskites have been emerging as the most attractive photovoltaic material. As regulated by Shockley-Queisser theory, a formidable mate…
Pressure induced metallization with absence of structural transition in layered MoSe2
Zhao Zhao, Haijun Zhang, Hongtao Yuan +10
Layered transition-metal dichalcogenides have emerged as exciting material systems with atomically thin geometries and unique electronic properties. Pressure is a powerful tool for…
Tetrahedrally coordinated carbonates in Earth's lower mantle
Eglantine Boulard, Ding Pan, Giulia Galli +2
Carbonates are the main species that bring carbon deep into our planet through subduction. They are an important rock-forming mineral group, fundamentally distinct from silicates i…
Bulk Signatures of Pressure-Induced Band Inversion and Topological Phase Transitions in PbSnSe
Xiaoxiang Xi, Xu-Gang He, Fen Guan +10
The characteristics of topological insulators are manifested in both their surface and bulk properties, but the latter remain to be explored. Here we report bulk signatures of pres…
Pressure Dependent Structural Changes and Predicted Electrical Polarization in Perovskite RMnO3
T. Wu, T. A. Tyson, H. Chen +7
High pressure x-ray diffraction (XRD) measurements on RMnO3 (R=Dy, Ho and Lu) reveals that varying structural changes occurs for different R ions. Large lattice changes (orthorhomb…
Signatures of a Pressure-Induced Topological Quantum Phase Transition in BiTeI
Xiaoxiang Xi, Chunli Ma, Zhenxian Liu +6
We report the observation of two signatures of a pressure-induced topological quantum phase transition in the polar semiconductor BiTeI using x-ray powder diffraction and infrared…
Pressure-induced amorphization and polyamorphism in one-dimensional single crystal TiO2 nanomaterials
Quanjun Li, Bingbing Liu, Lin Wang +10
The structural phase transitions of single crystal TiO2-B nanoribbons were investigated in-situ at high-pressure using the synchrotron X-ray diffraction and the Raman scattering. O…
High Pressure Structural Stability of Multiferroic Hexagonal REMnO3
P. Gao, Z. Chen, T. A. Tyson +6
Structural changes in REMnO3 (RE= Y, Ho, Lu) under high pressure were examined by synchrotron x-ray diffraction methods at room temperature. Compression occurs more readily in the…
Ionic high-pressure form of elemental boron
Artem R. Oganov, Jiuhua Chen, Carlo Gatti +7
Boron is an element of fascinating chemical complexity. Controversies have shrouded this element since its discovery was announced in 1808: the new 'element' turned out to be a com…
Comment on "Superhard Semiconducting Optically Transparent High Pressure Phase of Boron"
A. R. Oganov, V. L. Solozhenko, O. O. Kurakevych +5
This Comment points out a number of errors in the recent paper by Zarechnaya, Dubrovinskaia, Dubrovinsky, et al. (Phys. Rev. Lett. 102, 185501 (2009)). Results and conclusions pres…
New high-pressure form of boron is significantly ionic
Artem R. Oganov, Jiuhua Chen, Carlo Gatti +7
The comment of Dubrovinskaia et al. is scientifically flawed. The high-pressure form of boron, discovered by Oganov et al., is indeed new and its bonding has a significant ionic ch…