[HTML][HTML] Retracted Article: Carbon content drives high temperature superconductivity in a carbonaceous sulfur hydride below 100 GPa

GA Smith, IE Collings, E Snider, D Smith… - Chemical …, 2022 - pubs.rsc.org
We report a previously unobserved superconducting state of the photosynthesized
carbonaceous sulfur hydride (C–S–H) system with a maximum TC of 191 (1) K below 100 …

Stable and metastable structures of tin (IV) oxide at high pressure

DT Sneed, GA Smith, JSC Kearney… - … of the Royal …, 2023 - royalsocietypublishing.org
We have analysed SnO 2 with a combination of synchrotron X-ray diffraction and X-ray
absorption spectroscopy across a pressure range of 0→ 82.9 GPa with thermal annealing by …

Pressure-induced loss of metallicity in

M White, D Schacher, GA Smith, D Smith, C Park… - Physical Review …, 2024 - APS
The density evolution of the physical properties of the transition-metal oxide RuO 2 coupled
with a deeper understanding of underlying metastable phases is necessary for correlating …

Long-distance polarizing microscope system combined with solenoid-type magnet for microscopy and simultaneous measurement of physical parameters

Y Kinoshita, T Miyakawa, X Xu… - Review of Scientific …, 2022 - pubs.aip.org
We have developed a long-distance polarizing microscope system combined with a
solenoid-type superconducting magnet. By inserting an infinity-corrected objective lens into …

[HTML][HTML] CO2 laser heating system for in situ radial x-ray absorption at 16-BM-D at the Advanced Photon Source

C Childs, D Smith, GA Smith, P Ellison… - Review of Scientific …, 2022 - pubs.aip.org
We present a portable CO 2 laser heating system for in situ x-ray absorption spectroscopy
(XAS) studies at 16-BM-D (High Pressure Collaborative Access Team, Advanced Photon …

[HTML][HTML] Fano resonances for high performance sensing in an asymmetric resonator based on hybrid graphene/dielectric metasurfaces

S Cao, Q Wang, X Gao, S Zhang, R Hong, D Zhang - AIP Advances, 2021 - pubs.aip.org
Improving the performance and sensitivity of metallic sensors is challenging because of the
Ohmic loss that occurs for traditional metallic materials. In this work, we optimized a …

Probing disorder in high-pressure cubic tin (IV) oxide: a combined X-ray diffraction and absorption study

D Sneed, JSC Kearney, D Smith, JS Smith… - Journal of …, 2019 - journals.iucr.org
The transparent conducting oxide, SnO2, is a promising optoelectronic material with
predicted tailorable properties via pressure-mediated band gap opening. While such …

Lower pressure phases and metastable states of superconducting photo-induced carbonaceous sulfur hydride

GA Smith, IE Collings, E Snider, D Smith… - arXiv preprint arXiv …, 2021 - arxiv.org
Room-temperature superconductivity was recently discovered in carbonaceous sulfur
hydride (CSH) close to 3\, Mbar. We report significant differences in the superconducting …

Anomalous conductivity in the rutile structure driven by local disorder

D Smith, D Sneed… - The Journal of …, 2019 - ACS Publications
Many rutile-type materials are characterized by a softness in shear with pressure which is
coupled to a Raman-active librational motion. Combining direct studies of anion positions in …

Gearbox designs for the diamond anvil cell: Applications to hard-to-reach-places

PB Ellison, D Smith, S Sinogeikin, A Salamat - arXiv preprint arXiv …, 2022 - arxiv.org
The uniaxial compression design of the diamond anvil high pressure cell (DAC)
necessitates the use of a soft pressure-transmitting medium (PTM) to minimize non …