EHPRG

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.

Selection of high-pressure related titles from top scientific journals.

Mitochondrial origins of the pressure to sleep
by Raffaele Sarnataro


Nature, Published online: 16 July 2025; doi:10.1038/s41586-025-09261-y

Research on Drosophila neurons shows links between the need to sleep and aerobic metabolism, indicating that the pressure to sleep may have a mitochondrial origin.
16 Jul 2025 at 12:00am

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Imaging-Based Quantum Optomechanics
by C. M. Pluchar, W. He, J. Manley, N. Deshler, S. Guha, and D. J. Wilson
Author(s): C. M. Pluchar, W. He, J. Manley, N. Deshler, S. Guha, and D. J. Wilson


In active imaging protocols, information about an object is encoded into the spatial mode of a scattered photon. Recently the quantum limits of active imaging have been explored with levitated nanoparticles, which experience a multimode radiation pressure backaction (the photon recoil force) due to …


[Phys. Rev. Lett. 135, 023601] Published Tue Jul 08, 2025
8 Jul 2025 at 12:00pm
Incommensurate Antiferromagnetism in ${\mathrm{UTe}}_{2}$ under Pressure
by W. Knafo, T. Thebault, S. Raymond, P. Manuel, D. D. Khalyavin, F. Orlandi, E. Ressouche, K. Beauvois, G. Lapertot, K. Kaneko, D. Aoki, D. Braithwaite, and G. Knebel
Author(s): W. Knafo, T. Thebault, S. Raymond, P. Manuel, D. D. Khalyavin, F. Orlandi, E. Ressouche, K. Beauvois, G. Lapertot, K. Kaneko, D. Aoki, D. Braithwaite, and G. Knebel


Neutron diffraction reveals that superconductivity in UTe2 emerges near an incommensurate antiferromagnetic phase under pressure, pointing to antiferromagnetic—rather than ferromagnetic—correlations as a key driving force.


[Phys. Rev. X 15, 021075] Published Fri May 30, 2025
30 May 2025 at 12:00pm
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
Slip-dominated structural transitions
by Kanka Ghosh, Oğuz Umut Salman, Sylvain Queyreau, and Lev Truskinovsky
Author(s): Kanka Ghosh, Oğuz Umut Salman, Sylvain Queyreau, and Lev Truskinovsky


By introducing a novel method of tracking the history of atomic-scale metric tensors in molecular dynamics, the authors uncover hidden micro-slips during pressure-induced square to hexagonal transition. The purely geometrical tessellation of the configurational space of metric tensors creates a possibility to distinguish between elastic and plastic deformations and reveals previously hidden “micro-slips” under “shuffle”, portraying a central role of lattice invariant shears in this class of phase transformation. The discovered slip-dominated mechanism during the square to hexagonal transition contains some generic elements and is expected to be common for most reconstructive transitions including the iconic BCC-HCP and FCC-HCP transitions.


[Phys. Rev. Materials 9, 073604] Published Mon Jul 07, 2025
7 Jul 2025 at 12:00pm
Hydrogen-rich hydrate at high pressures up to 104 GPa
by Alexander F. Goncharov, Elena Bykova, Iskander Batyrev, Maxim Bykov, Eric Edmund, Amol Karandikar, Mahmood Mohammad, Stella Chariton, Vitali Prakapenka, Konstantin Glazyrin, Mohamed Mezouar, Gaston Garbarino, and Jonathan Wright
Author(s): Alexander F. Goncharov, Elena Bykova, Iskander Batyrev, Maxim Bykov, Eric Edmund, Amol Karandikar, Mahmood Mohammad, Stella Chariton, Vitali Prakapenka, Konstantin Glazyrin, Mohamed Mezouar, Gaston Garbarino, and Jonathan Wright


Gas hydrates are considered fundamental building blocks of giant icy planets like Neptune and similar exoplanets. The existence of these materials in the interiors of giant icy planets, which are subject to high pressures and temperatures, depends on their stability relative to their constituent com…


[Phys. Rev. Materials 9, 073601] Published Tue Jul 01, 2025
1 Jul 2025 at 12:00pm
Probing the skyrmion phase of MnSi through the field-exponent of the isothermal entropy change
by Tapas Samanta, Chris Taake, and Luana Caron
Author(s): Tapas Samanta, Chris Taake, and Luana Caron


A detailed study of the field-induced entropy change evolution under hydrostatic pressure ($p$) of the well-known skyrmion-hosting MnSi system was carried with the goal of assessing its magnetocaloric properties and identifying the skyrmion phase. The pressure-induced modification of the first-order…


[Phys. Rev. Materials 9, 064413] Published Thu Jun 26, 2025
26 Jun 2025 at 12:00pm
Phase stability of materials in sodium-rich silicates at high pressure
by Haoyu Wang, Wenwen Cui, Jian Hao, Jingming Shi, and Yinwei Li
Author(s): Haoyu Wang, Wenwen Cui, Jian Hao, Jingming Shi, and Yinwei Li


Sodium (Na), silicon (Si), and oxygen (O) are main abundant elements to form the minerals inside the Earth's interior. Here, combining first-principles calculations and crystal structural prediction methods, we propose the formation of a distinct stoichiometry, ${\mathrm{Na}}_{6}{\mathrm{SiO}}_{5}$,…


[Phys. Rev. Materials 9, 063603] Published Fri Jun 06, 2025
6 Jun 2025 at 12:00pm
Magnetic correlations and pairing tendencies of the hybrid stacking nickelate superlattice ${\mathrm{La}}_{7}{\mathrm{Ni}}_{5}{\mathrm{O}}_{17}$ $({\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}/{\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10})$ under pressure
by Yang Zhang, Ling-Fang Lin, Adriana Moreo, Thomas A. Maier, and Elbio Dagotto
Author(s): Yang Zhang, Ling-Fang Lin, Adriana Moreo, Thomas A. Maier, and Elbio Dagotto


Motivated by the recent rapid progress in high-${T}_{c}$ nickelate superconductors, we comprehensively study the physical properties of the alternating bilayer trilayer stacking nickelate ${\mathrm{La}}_{7}{\mathrm{Ni}}_{5}{\mathrm{O}}_{17}$. The high-symmetry phase of this material, without the til…


[Phys. Rev. B 112, 024508] Published Thu Jul 17, 2025
17 Jul 2025 at 12:00pm
Robust superconductivity in the high-symmetry La-Y solid solution alloy under high pressure
by Yinggang Song, Jingkai Bi, Chuanheng Ma, Hanyu Liu, Mi Zhou, Hongbo Wang, and Guangtao Liu
Author(s): Yinggang Song, Jingkai Bi, Chuanheng Ma, Hanyu Liu, Mi Zhou, Hongbo Wang, and Guangtao Liu


Rare-earth (RE) elements exhibit diverse crystal structures and unique physicochemical properties under pressure, such as complex magnetic behavior and intriguing superconducting properties. Among them, lanthanum (La) exhibits enhanced superconductivity under compression. However, pressure-induced s…


[Phys. Rev. B 112, 024509] Published Thu Jul 17, 2025
17 Jul 2025 at 12:00pm
Pressure-induced ultra-incompressibility and superhardness of carbon nitrides
by Zhuoye Hu, Tengfei Xu, Dominik Legut, and Ruifeng Zhang
Author(s): Zhuoye Hu, Tengfei Xu, Dominik Legut, and Ruifeng Zhang


The recent experimental syntheses of carbon nitrides ($\mathit{oP}\text{8-CN}, tI14\text{−}{\mathrm{C}}_{3}{\mathrm{N}}_{4}, tI24\text{-C}{\mathrm{N}}_{2}$, and $hP126\text{−}{\mathrm{C}}_{3}{\mathrm{N}}_{4}$) have created great scientific interest in the long-standing debate on their stability, ult…


[Phys. Rev. B 112, 014106] Published Tue Jul 15, 2025
15 Jul 2025 at 12:00pm
Variational quantum Monte Carlo investigations of the superconducting pairing in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$
by Yi-Qun Liu, Da Wang, and Qiang-Hua Wang
Author(s): Yi-Qun Liu, Da Wang, and Qiang-Hua Wang


We investigate the pairing symmetry in the novel superconductor ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ under pressure by the nonperturbative variational quantum Monte Carlo. Within the bilayer Hubbard model and extended $t\text{−}J$ model with two orbitals in the ${E}_{g}$ doublet, we …


[Phys. Rev. B 112, 014511] Published Tue Jul 15, 2025
15 Jul 2025 at 12:00pm
Origin of the diagonal double-stripe spin density wave and potential superconductivity in bulk ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ at ambient pressure
by Yu-Bo Liu, Hongyi Sun, Ming Zhang, Qihang Liu, Wei-Qiang Chen, and Fan Yang
Author(s): Yu-Bo Liu, Hongyi Sun, Ming Zhang, Qihang Liu, Wei-Qiang Chen, and Fan Yang


The discovery of high-temperature superconductivity (SC) with ${T}_{c}≈80$ K in the pressurized ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ has aroused great interest. Currently, due to technical difficulties, most experiments on ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ can only…


[Phys. Rev. B 112, 014510] Published Mon Jul 14, 2025
14 Jul 2025 at 12:00pm
Band structure and pairing nature of ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ thin film at ambient pressure
by Zhi-Yan Shao, Yu-Bo Liu, Min Liu, and Fan Yang
Author(s): Zhi-Yan Shao, Yu-Bo Liu, Min Liu, and Fan Yang


Recently, evidence of superconductivity (SC) with onset ${T}_{c}$ above the McMillan limit has been detected in the ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ ultrathin film grown on the ${\mathrm{LaSrAlO}}_{4}$ substrate at ambient pressure. This progress opens another era in the field of…


[Phys. Rev. B 112, 024506] Published Fri Jul 11, 2025
11 Jul 2025 at 12:00pm
Disruption of Lipomyces starkeyi cells grown in hydrolyzed cheese-whey by high pressure homogenization for enhancing lipid extraction
by Ayşe Alara Batıgün Hami Alpas Deniz Cekmecelioglu Department of Food Engineering, Middle East Technical University, Ankara, Turkey
Volume 45, Issue 2, June 2025, Page 181-194
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13 Mar 2025 at 11:57am
A new pressure medium, Daphne 7676, with solidification pressure of 5 GPa at 300 K and low melting point of around 110 K at ambient pressure
by K. Murata K. Goto S. Klotz D. Bhoi K. Béneut Y. Uwatoko H. Yoshino S. Aoki a Osaka Metropolitan University, Osaka, Japanb Idemitsu Kosan Co. Ltd, Tokyo, Japanc IMPMC, CNRS UMR 7590, Sorbonne Université, Paris, Franced ISSP, University of Tokyo, Tokyo, Japane Univ. of Electro-Communications, Chofu, Japanf Sorbonne Université, IMPMC, Paris, Franceg Neutron Sci. &Tech. Center (CROSS), Tokai, Ibaraki, Japan
Volume 45, Issue 2, June 2025, Page 151-161
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6 Jun 2025 at 8:33am
Electrical properties of GdF3 under high pressure
by Tingjing Hu Kenan Xu Yuanlin Liu Liyun Yan Jingshu Wang Junkai Zhang Xuefei Li Xiaoyan Cui a School of Physics and Electrical Engineering, Jiaying University, Meizhou, People’s Republic of Chinab Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping, People’s Republic of China
Volume 45, Issue 2, June 2025, Page 162-169
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10 Jun 2025 at 2:05pm
Accurate, reproducible, and robust detection of phase transformations in alloys subjected to high isostatic pressure and cooling rates
by Stefan Müller Santiago Benito Leonhard Gertlowski Oliver Schenk Christoph Broeckmann Sebastian Weber a Ruhr University Bochum, Chair of Materials Technology, Bochum, Germanyb RWTH Aachen, Institute of Applied Powder Metallurgy and Ceramics, Aachen, Germany
Volume 45, Issue 2, June 2025, Page 170-180
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13 Jun 2025 at 1:52pm
Irreversible changes in amorphous C₃N₄ under pressure: loss of chemical order and graphite-like character
by Murat Durandurdu Department of Materials Science and Nanotechnology Engineering, Abdullah Gül University, Kayseri, Türkiye
Volume 45, Issue 2, June 2025, Page 124-136
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21 Apr 2025 at 5:23am
The magnetism and elasticity of ϵ-FeOOH across the pressure-induced electronic spin transition
by Osamu Ikeda Tatsuya Sakamaki Takaya Mitsui Kosuke Fujiwara Hiroshi Uchiyama Hiroshi Fukui Daisuke Ishikawa Alfred Q.R. Baron Akio Suzuki a Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japanb Kansai Institute for Photon Science, National Institute for Quantum Science and Technology, Sayo, Japanc Japan Synchrotron Radiation Research Institute, Sayo, Japand Materials Dynamics Laboratory, RIKEN SPring-8 Center, Sayo, Japan
Volume 45, Issue 2, June 2025, Page 109-123
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19 Feb 2025 at 7:57am
High pressure–temperature picosecond acoustic measurements on Fe using an internal-resistive-heated diamond anvil cell
by Yoshihiro Nagaya Takashi Yagi Ryoto Ebina Kei Hirose Manabu Kodama Shuichiro Hirai Kenji Ohta a Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Meguro, Japanb National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japanc Department of Earth and Planetary Science, The University of Tokyo, Bunkyo, Japand Department of Mechanical Engineering, Tokyo Institute of Technology, Meguro, Japan
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28 Jun 2025 at 8:57am
LiPF6 under pressure: a symmetry-mode-based structural analysis
by C. J. Ridley C. L. Bull N.P. Funnell a Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USAb Rutherford Appleton Laboratories, ISIS Neutron and Muon Source, Harwell, Didcot, UKc School of Chemistry, The University of Edinburgh, Edinburgh, UK
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6 Jul 2025 at 8:31am
Synergistic effects of elevated hydrostatic pressure, mild heat, malic acid, and citricidalTM against wild-type, rifampicin-resistant, and pressure-stressed Shiga toxin-producing Escherichia coli
by Niraj Ghimire Ranju Kafle Junice Sibley Sandhya Thapa Aliyar Cyrus Fouladkhah a Public Health Microbiology Laboratory, Food Science Program, Tennessee State University, Nashville, TN, USAb Public Health Microbiology FoundationSM, Franklin, TN, USA
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14 Jul 2025 at 7:17am