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Double perovskite oxide materials have garnered tremendous interest due to their strong spin-lattice-charge coupling. Interesting in their own right, rare-earth-based DPOs have yet to be subjected to high-pressure studies. In this paper, we…

By applying pressures up to 42 GPa on the nitrogen-doped lutetium hydride (LuH$_{2\pm\text{x}}$N$_y$), we have found a gradual change of color from dark-blue to pink-violet in the pressure region of about 12 GPa to 21 GPa. The temperature…

Superconductivity · Physics 2023-05-12 Ying-Jie Zhang , Xue Ming , Qing Li , Xiyu Zhu , Bo Zheng , Yuecong Liu , Chengping He , Huan Yang , Hai-Hu Wen

We investigate the pressure-driven structural and electronic evolution of PdSe\(_2\) using powder X-ray diffraction, Raman spectroscopy, and first-principles calculations. Beyond 2.3 GPa, suppression of the Jahn-Teller distortion induces…

Recently reported structural complexity and superconducting transition in lithium under pressure has increased the interest in light alkalis, otherwise considered as simple metals and well known systems under normal conditions. In this work…

Materials Science · Physics 2007-05-23 A. Rodriguez-Prieto , A. Bergara

Rattling-induced superconductivity in the {\beta}-pyrochlore oxide KOs2O6 is investigated under high pressure up to 5 GPa. Resistivity measurements in a high-quality single crystal reveal a gradual decrease in the superconducting transition…

Phase transitions in metal halide perovskites triggered by external provocations produce significantly different material properties, providing a prodigious opportunity for a comprehensive applications. In the present study, the first…

We report high pressure structural phase transformation sequence in a layered Iron-based superconducting compound FeSe0.3Te0.7 to 31 GPa at room temperature. The ambient pressure PbO type tetragonal phase (Space Group - P4/nmm) transforms…

Materials Science · Physics 2011-05-05 Andrew K. Stemshorn , Yogesh K. Vohra , Phillip M. Wu , F. C. Hsu , Y. L. Huang , M. K. Wu , K. W. Yeh

A pressure-induced collapse of magnetic ordering in $\beta$-Li$_2$IrO$_3$ at $P_m\sim1.5- 2$ GPa has previously been interpreted as evidence for possible emergence of spin liquid states in this hyperhoneycomb iridate, raising prospects for…

Structural, magnetic and electrical-transport properties of {\alpha}-LiFeO2, crystallizing in the rock salt structure with random distribution of Li and Fe ions, have been studied by synchrotron X-ray diffraction, 57Fe M\"ossbauer…

Strongly Correlated Electrons · Physics 2017-09-29 Samar Layek , Eran Greenberg , Weiming Xu , Gregory Kh. Rozenberg , Moshe P. Pasternak , Jean-Paul Itié , Dániel G. Merkel

X-ray powder diffraction and electrical resistivity measurements were performed on the tetragonal compound CeCoSi under pressure to elucidate the phase boundary of the pressure-induced structural transition and the change in the 4$f$…

We investigated the effects of uniaxial stress on the pressure-induced alpha-to-omega transition in pure titanium (Ti) by means of angle dispersive x-ray diffraction in a diamond-anvil cell. Experiments under four different pressure…

Materials Science · Physics 2009-11-10 Daniel Errandonea , Y. Meng , M. Somayazulu , D. Hausermann

We studied the pressure dependence of the room-temperature infrared reflectivity of (TMTTF)_2AsF_6 along all three optical axes. This anisotropic organic compound consists of molecular stacks with orbital overlap along the a direction; due…

Strongly Correlated Electrons · Physics 2007-05-23 A. Pashkin , M. Dressel , C. A. Kuntscher

Topological superconductivity with Majorana bound states, which are critical to implement nonabelian quantum computation, may be realized in three-dimensional semimetals with nontrivial topological feature, when superconducting transition…

The high-pressure behavior of two Mn-based honeycomb-structured magnetoelectric materials, Mn4Nb2O9 (MNO) and Mn4Ta2O9 (MTO), was investigated using Raman spectroscopy, synchrotron x-ray diffraction, and density functional theory (DFT)…

Layered transition-metal trichalcogenides have become one of the research frontiers as two-dimensional magnets and candidate materials used for phase-change memory devices. Herein we report the high-pressure synchrotron X-ray diffraction…

Strongly Correlated Electrons · Physics 2019-06-03 Zhenhai Yu , Wei Xia , Kailang Xu , Ming Xu , Hongyuan Wang , Xia Wang , Na Yu , Zhiqiang Zou , Jinggeng Zhao , Lin Wang , Xiangshui Miao , Yanfeng Guo

Detailed structural and magnetotransport properties of the monophosphate tungsten bronze K$_{x}$P$_4$W$_{8}$O$_{32}$ single crystals are reported. Both galvanomagnetic and thermal properties are shown to be consistent with a charge density…

Strongly Correlated Electrons · Physics 2016-11-30 Kamil K. Kolincio , Olivier Pérez , Sylvie Hébert , Pierre Fertey , Alain Pautrat

Quasi-hydrostatic compression of rhombohedral boron monosulfide (r-BS) has been studied up to 50 GPa at room temperature using diamond-anvil cells and angle-dispersive synchrotron X-ray diffraction. A fit of the experimental P-V data to the…

Some highly unusual features of a lipid-water liquid crystal are revealed by high pressure x-ray diffraction, light scattering and dilatometric studies of the lamellar (bilayer $L_{\alpha}$) to nonlamellar inverse hexagonal ($H_{II}$) phase…

Condensed Matter · Physics 2009-10-22 P. T. C. So , Sol M. Gruner , Shyamsunder Erramilli

Layered transition-metal dichalcogenides have emerged as exciting material systems with atomically thin geometries and unique electronic properties. Pressure is a powerful tool for continuously tuning their crystal and electronic structures…

We present the magnetic and structural properties of [Cu(pyrazine)$_{0.5}$(glycine)]ClO$_4$ under applied pressure. As previously reported, at ambient pressure this material consists of quasi-two-dimensional layers of weakly coupled…

Strongly Correlated Electrons · Physics 2024-01-08 M. J. Coak , S. P. M. Curley , Z. Hawkhead , J. P. Tidey , D. Graf , S. J. Clark , P. Sengupta , Z. E. Manson , T. Lancaster , P. A. Goddard , J. L. Manson