Welcome
Welcome to the official website of the European High Pressure Research Group (EHPRG).
EHPRG is non-profitable academic association established in 1963 which is devoted to science and technology of matter under high pressure. It organizes an annual meeting which brings together hundreds of scientists of various fields, mainly physics, chemistry, Earth and planetary sciences, bio- and food science and technology.
The reasonable size of the group, low conference fees, and a friendly relationship between the attendants have made EHPRG meetings a major event in the European high-pressure community for more than half a century.
Immediate past EHPRG Meeting
The Joint 28th AIRAPT and 60th EHPRG International Conference on High Pressure Science and Technology (AIRAPT-2023) took place in Edinburgh, UK, at the Edinburgh International Conference Centre (EICC), from July 23-28, 2023.
Immediately prior to AIRAPT/EHPRG, from the 19th to 23rd of July 2023, a Summer School had taken place, also based in Edinburgh, with accommodation provided in University Halls of Residence. The School was aimed at young researchers, and experimentalists wanting a grounding in theory and vice versa.
For more information, please visit the official webpage of AIRAPT-23.
High-pressure in the headlines
Selection of high-pressure related titles from top scientific journals.
-
Sam Bankman-Fried sentencing: crypto-funded researchers grapple with FTX collapse
by Jonathan O'Callaghan
Nature, Published online: 28 March 2024; doi:10.1038/d41586-024-00960-6
Organizations who received funds from FTX face pressure to return the money at significant operational cost.28 Mar 2024 at 12:00am
Overcoming low vision to prove my abilities under pressure
by Lesley Evans Ogden
Nature, Published online: 28 March 2024; doi:10.1038/d41586-024-00957-1
A genetic eye condition pushed biochemist Kamini Govender to develop coping strategies that serve her well in the lab and help her to avoid burnout.28 Mar 2024 at 12:00am
Creep-free polyelectrolyte elastomer for drift-free iontronic sensing
by Yunfeng He
Nature Materials, Published online: 21 March 2024; doi:10.1038/s41563-024-01848-6
Conventional iontronic pressure sensors suffer from signal drift and inaccuracy owing to creep of soft materials and ion leakage. Here the authors report a leakage-free and creep-free polyelectrolyte-elastomer-based iontronic sensor that achieves a drift rate two to three orders of magnitude lower than those of conventional iontronic sensors.21 Mar 2024 at 12:00am
[CaRP] This appears to be an HTML webpage, not a feed.
Pressure Driven Fractionalization of Ionic Spins Results in Cupratelike High-${T}_{c}$ Superconductivity in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$
by Ruoshi Jiang (姜若诗), Jinning Hou (侯晋宁), Zhiyu Fan (樊知宇), Zi-Jian Lang (郎子健), and Wei Ku (顧威)
Author(s): Ruoshi Jiang (姜若诗), Jinning Hou (侯晋宁), Zhiyu Fan (樊知宇), Zi-Jian Lang (郎子健), and Wei Ku (顧威)
Beyond 14 GPa of pressure, bilayered ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ was recently found to develop strong superconductivity above the liquid nitrogen boiling temperature. An immediate essential question is the pressure-induced qualitative change of electronic structure that enab…
[Phys. Rev. Lett. 132, 126503] Published Wed Mar 20, 2024
20 Mar 2024 at 11:00am
Electron-Induced Nonmonotonic Pressure Dependence of the Lattice Thermal Conductivity of $θ$-TaN
by Ashis Kundu, Yani Chen, Xiaolong Yang, Fanchen Meng, Jesús Carrete, Mukul Kabir, Georg K. H. Madsen, and Wu Li
Author(s): Ashis Kundu, Yani Chen, Xiaolong Yang, Fanchen Meng, Jesús Carrete, Mukul Kabir, Georg K. H. Madsen, and Wu Li
Recent theoretical and experimental research suggests that $θ$-TaN is a semimetal with high thermal conductivity ($κ$), primarily due to the contribution of phonons (${κ}_{\mathsf{ph}}$). By using first-principles calculations, we show a nonmonotonic pressure dependence of the $κ$ of $θ$-TaN. ${κ}_{…
[Phys. Rev. Lett. 132, 116301] Published Fri Mar 15, 2024
15 Mar 2024 at 11:00am
Pressure-Induced Superconductivity In Polycrystalline ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7−δ}$
by G. Wang, N. N. Wang, X. L. Shen, J. Hou, L. Ma, L. F. Shi, Z. A. Ren, Y. D. Gu, H. M. Ma, P. T. Yang, Z. Y. Liu, H. Z. Guo, J. P. Sun, G. M. Zhang, S. Calder, J.-Q. Yan, B. S. Wang, Y. Uwatoko, and J.-G. Cheng
Author(s): G. Wang, N. N. Wang, X. L. Shen, J. Hou, L. Ma, L. F. Shi, Z. A. Ren, Y. D. Gu, H. M. Ma, P. T. Yang, Z. Y. Liu, H. Z. Guo, J. P. Sun, G. M. Zhang, S. Calder, J.-Q. Yan, B. S. Wang, Y. Uwatoko, and J.-G. Cheng
Researchers have measured a zero-resistance state for the nickelate La3Ni2O7, which measurements suggest may superconduct at temperatures above the boiling point of liquid nitrogen.
[Phys. Rev. X 14, 011040] Published Thu Mar 07, 2024
7 Mar 2024 at 11:00am
Smectic and Soap Bubble Optofluidic Lasers
by Zala Korenjak and Matjaž Humar
Author(s): Zala Korenjak and Matjaž Humar
Using a soap bubble, researchers have created a laser that could act as a sensitive sensor for environmental parameters including atmospheric pressure.
[Phys. Rev. X 14, 011002] Published Fri Jan 05, 2024
5 Jan 2024 at 11:00am
Colloquium: Room temperature superconductivity: The roles of theory and materials design
by Warren E. Pickett
Author(s): Warren E. Pickett
Superconductivity, discovered in 1911 and first theoretically understood in 1957, remains a fascinating phenomenon for reasons both fundamental and applied. Reliably calculating the critical temperature of a given material, and even more so predicting it, turned out to be a considerable challenge. This Colloquium explains how theoretical developments have led to increasingly reliable predictions that have culminated in the discovery of the hydride materials that display superconductivity under high pressure at temperatures just shy of room temperature.
[Rev. Mod. Phys. 95, 021001] Published Fri Apr 07, 2023
7 Apr 2023 at 12:00pm
Polymorphism of two-dimensional antiferromagnets, ${\mathrm{AgF}}_{2}$ and ${\mathrm{CuF}}_{2}$
by Daniel Jezierski and Wojciech Grochala
Author(s): Daniel Jezierski and Wojciech Grochala
We present a theoretical study of relative stability, as well as of the magnetic and electronic properties, of ${\mathrm{AgF}}_{2}$ and ${\mathrm{CuF}}_{2}$, in two related structural forms: orthorhombic (ambient pressure form of ${\mathrm{AgF}}_{2}$) and monoclinic (ambient pressure form of ${\math…
[Phys. Rev. Materials 8, 034407] Published Tue Mar 26, 2024
26 Mar 2024 at 11:00am
Temperature-induced structural and electronic phase transitions in λ-phase $\mathrm{T}{\mathrm{i}}_{3}{\mathrm{O}}_{5}$
by K. Yoshimatsu, H. Nakao, and H. Kumigashira
Author(s): K. Yoshimatsu, H. Nakao, and H. Kumigashira
Metastable λ-Ti3O5, which undergoes phase transition to other polymorphs by external stimuli such as light, pressure, and temperature, is a candidate material for optolectronic and heat-storage devices. Here, the authors investigate the changes in the electrical and structural properties of λ-Ti3O5 with a single-crystalline thin film form across the temperature-induced phase transition. Resistivity and synchrotron X-ray diffraction measurements unveils a complex phase diagram divided into three temperature regions, which is composed of metal-insulator transition and second-order structural phase transition.
[Phys. Rev. Materials 8, 035002] Published Wed Mar 13, 2024
13 Mar 2024 at 11:00am
Electronic structure of nitrogen-doped lutetium hydrides
by Adam Denchfield, Hyowon Park, and Russell J. Hemley
Author(s): Adam Denchfield, Hyowon Park, and Russell J. Hemley
Hydrides at high pressures constitute the only materials to be superconducting above 200 K, and are typically marked by an appreciable hydrogen density of states and van Hove singularities at the Fermi energy. Given the recent interest in nitrogen-doped lutetium hydride, the authors focused on finding the structures which would have electronic properties that could plausibly support high-temperature superconductivity within a narrow pressure range. They have identified a narrow range of stoichiometries Lu8H23−xN with hydrogen-dominant conduction states, and found one structure which exhibits a very large hydrogen density of states with an extremely sharp van Hove singularity, whose properties may therefore change dramatically under pressure.
[Phys. Rev. Materials 8, L021801] Published Fri Feb 16, 2024
16 Feb 2024 at 11:00am
High-pressure effects on structural, magnetic, and vibrational properties of van der Waals antiferromagnet ${\mathrm{MnPS}}_{3}$
by D. P. Kozlenko, O. N. Lis, N. T. Dang, M. Coak, J.-G. Park, E. V. Lukin, S. E. Kichanov, N. O. Golosova, I. Yu. Zel, and B. N. Savenko
Author(s): D. P. Kozlenko, O. N. Lis, N. T. Dang, M. Coak, J.-G. Park, E. V. Lukin, S. E. Kichanov, N. O. Golosova, I. Yu. Zel, and B. N. Savenko
The crystal structure, vibrational spectra, and magnetic structure of quasi-two-dimensional layered van der Waals material ${\mathrm{MnPS}}_{3}$ were studied using x-ray diffraction and Raman spectroscopy at high pressures up to 28 GPa, and neutron diffraction up to 3.6 GPa, respectively. A structur…
[Phys. Rev. Materials 8, 024402] Published Tue Feb 06, 2024
6 Feb 2024 at 11:00am
High-pressure–high-temperature phase diagram of tin
by Robin Fréville, Agnès Dewaele, Nicolas Guignot, Philippe Faure, Laura Henry, Gaston Garbarino, and Mohamed Mezouar
Author(s): Robin Fréville, Agnès Dewaele, Nicolas Guignot, Philippe Faure, Laura Henry, Gaston Garbarino, and Mohamed Mezouar
The high-pressure–high-temperature behavior of tin has been measured with x-ray diffraction and laser-heated diamond anvil cells up to 225 GPa at 300 K and to 110 GPa and $∼4000$ K. Temperature has been measured using conventional point pyrometry as well as a four-color mapping pyrometer. The stabil…
[Phys. Rev. B 109, 104116] Published Thu Mar 28, 2024
28 Mar 2024 at 11:00am
Pressure-induced structural evolution with suppression of the charge density wave state and dimensional crossover in ${\mathrm{CeTe}}_{3}$
by Junlong Li, Jiajia Feng, Dong Wang, Shang Peng, Mei Li, Hao Wang, Yixuan Xu, Tingting Zhao, Bohao Zhao, Sheng Jiang, Xiaodong Li, Chuanlong Lin, and Yanchun Li
Author(s): Junlong Li, Jiajia Feng, Dong Wang, Shang Peng, Mei Li, Hao Wang, Yixuan Xu, Tingting Zhao, Bohao Zhao, Sheng Jiang, Xiaodong Li, Chuanlong Lin, and Yanchun Li
We present the structural evolution and electrical transport properties in quasi-two-dimensional layered ${\mathrm{CeTe}}_{3}$ under high pressures by employing Raman spectra, synchrotron x-ray diffraction (XRD), and electrical resistance measurements. Our Raman and XRD experiments reveal the suppre…
[Phys. Rev. B 109, 094119] Published Wed Mar 27, 2024
27 Mar 2024 at 11:00am
Ferroelectric phases and phase transitions in ${\mathrm{CsGeBr}}_{3}$ induced by mechanical load
by Joshua Townsend, Ravi Kashikar, S. Lisenkov, and I. Ponomareva
Author(s): Joshua Townsend, Ravi Kashikar, S. Lisenkov, and I. Ponomareva
First-principles-based atomistic simulations are used to reveal ferroelectric phases and phase transitions induced in a semiconductor ferroelectric, ${\mathrm{CsGeBr}}_{3}$, by external loads: hydrostatic pressure, uniaxial and biaxial stresses, and misfit strain. Hydrostatic pressure was found to s…
[Phys. Rev. B 109, 094121] Published Wed Mar 27, 2024
27 Mar 2024 at 11:00am
Diboride compounds doped with transition metals: A route to superconductivity through structure stabilization as well as defects
by P. M. Dee, J. S. Kim, A. C. Hire, J. Lim, L. Fanfarillo, S. Sinha, J. J. Hamlin, R. G. Hennig, P. J. Hirschfeld, and G. R. Stewart
Author(s): P. M. Dee, J. S. Kim, A. C. Hire, J. Lim, L. Fanfarillo, S. Sinha, J. J. Hamlin, R. G. Hennig, P. J. Hirschfeld, and G. R. Stewart
Recent investigations into ${\mathrm{MoB}}_{2}$ have unveiled a direct connection between a pressure-induced structural transition to a $P6/mmm$ space group structure and the emergence of superconductivity, producing critical temperatures up to 32 K at 100 GPa. This pressure-induced superconducting …
[Phys. Rev. B 109, 104520] Published Fri Mar 22, 2024
22 Mar 2024 at 11:00am
High-pressure synthesis of half-doped perovskites MnV0.5Nb0.5O3 and MnV0.5Ta0.5O3 with unusual A-site small Mn2+ cations
by Xun KangHiroaki HayashiAlexei A. BelikYoshihiro TsujimotoKazunari Yamauraa Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki, Japanb Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
Volume 44, Issue 1, March 2024, Page 25-37
.
21 Nov 2023 at 6:09am
Scintillator efficiency enhancement potential consequent to the pressure-dependent electronic, optical and elastic properties of CaI2: first-principles calculations
by Pradeep KumarAgnikumar G. Vedeshwara Department of Physics, Hansraj College, University of Delhi, Delhi, Indiab Thin Film Laboratory, Department of Physics & Astrophysics, University of Delhi, Delhi, India
Volume 44, Issue 1, March 2024, Page 69-83
.
2 Feb 2024 at 7:12am
Simultaneous compression of NaCl, Au, and ruby: toward mutually consistent pressure scales
by Yanbin WangGuoyin ShenJesse S. Smitha Center for Advanced Radiation Sources, The University of Chicago, Argonne, IL, USAb HPCAT, X-Ray Science Division, Argonne National Laboratory, Argonne, IL, USA
Volume 44, Issue 1, March 2024, Page 53-68
.
9 Jan 2024 at 3:57am
Structure and properties of a quasi-one-dimensional compound BaTiS3 under pressure
by L. C. FuW. J. ChengY. LiuL. C. ShiY. PengJ. ZhangZ. W. LiX. D. LiJ. L. ZhuX. C. WangC. Q. Jina Department of Physics, Southern University of Science and Technology, Shenzhen, People's Republic of Chinab Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of Chinac School of Physics, University of Chinese Academy of Sciences, Beijing, People's Republic of Chinad Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
.
11 Mar 2024 at 5:32am