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.

Intracellular competition shapes plasmid population dynamics | Science
From populations of multicellular organisms to selfish genetic elements, conflicts between levels of biological organization are central to evolution. Plasmids are extrachromosomal, self-replicating genetic elements that face selective pressures from ...
20 Nov 2025 at 3:01pm

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Direct Combinational Measurements of the Electron Density and Electric Field in Secondary Streamer Discharge under Atmospheric-Pressure Air
by Yuki Inada, Tatsutoshi Shioda, Ryosuke Nakamura, Akiko Kumada, Mitsuaki Maeyama, and Ryo Ono
Author(s): Yuki Inada, Tatsutoshi Shioda, Ryosuke Nakamura, Akiko Kumada, Mitsuaki Maeyama, and Ryo Ono


The electron density and electric field govern physical and chemical reactions in a secondary streamer discharge under atmospheric-pressure air. We present direct combinational measurements of these essential quantities and demonstrate their consistency by solving the continuity equation for electro…


[Phys. Rev. Lett. 135, 245301] Published Mon Dec 08, 2025
8 Dec 2025 at 11:00am
Anomalous Pressure Dependence of the Charge Density Wave and Fermi Surface Reconstruction in ${\mathrm{BaFe}}_{2}{\mathrm{Al}}_{9}$
by Mahmoud Abdel-Hafiez, Muthukumaran Sundaramoorthy, Nabeel M. Jasim, K. A. Irshad, Chia Nung Kuo, Chin Shan Lue, F. L. Carstens, A. Bertrand, M. Mito, Rüdiger Klingeler, Vladislav Borisov, Anna Delin, Boby Joseph, Olle Eriksson, Sonachalam Arumugam, and Govindaraj Lingannan
Author(s): Mahmoud Abdel-Hafiez, Muthukumaran Sundaramoorthy, Nabeel M. Jasim, K. A. Irshad, Chia Nung Kuo, Chin Shan Lue, F. L. Carstens, A. Bertrand, M. Mito, Rüdiger Klingeler, Vladislav Borisov, Anna Delin, Boby Joseph, Olle Eriksson, Sonachalam Arumugam, and Govindaraj Lingannan


We investigate the pressure evolution of charge density wave (CDW) order in the intermetallic compound ${\mathrm{BaFe}}_{2}{\mathrm{Al}}_{9}$, which undergoes a pronounced first-order CDW transition $∼112\text{ }\text{ }\mathrm{K}$ at ambient pressure. High-pressure electrical resistivity and magnet…


[Phys. Rev. Lett. 135, 236502] Published Tue Dec 02, 2025
2 Dec 2025 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
Structural transition and possible pressure-induced superconductivity in a suboxide ${\mathrm{La}}_{5}{\mathrm{Pb}}_{3}\mathrm{O}$
by Jiaqiang Yan, David J. Singh, Bayram Saparov, Huibo Cao, Yejun Feng, Jinguang Cheng, Yoshia Uwatoko, and David Mandrus
Author(s): Jiaqiang Yan, David J. Singh, Bayram Saparov, Huibo Cao, Yejun Feng, Jinguang Cheng, Yoshia Uwatoko, and David Mandrus


Here we report a structural phase transition and its interplay with superconductivity in the suboxide ${\mathrm{La}}_{5}{\mathrm{Pb}}_{3}\mathrm{O}$. Upon cooling through ${T}_{t}=225\phantom{\rule{0.28em}{0ex}}\mathrm{K},{\mathrm{La}}_{5}{\mathrm{Pb}}_{3}\mathrm{O}$ transforms from a high-temperatu…


[Phys. Rev. Materials 9, 124801] Published Mon Dec 08, 2025
8 Dec 2025 at 11:00am
Superhard and superconducting boron clathrates in the prediction of U-B compounds
by Juefei Wu, Dexi Shao, Junjie Wang, Yu Han, Bangshuai Zhu, Cuiying Pei, Qi Wang, Jian Sun, and Yanpeng Qi
Author(s): Juefei Wu, Dexi Shao, Junjie Wang, Yu Han, Bangshuai Zhu, Cuiying Pei, Qi Wang, Jian Sun, and Yanpeng Qi


The binary metal borides provide a promising platform for searching for unique materials with superconductivity and superhardness under high pressure, owing to the distinctive bonding characteristics of boron. In this work, we combined the first-principles calculations and crystal structure predicti…


[Phys. Rev. Materials 9, 123601] Published Mon Dec 01, 2025
1 Dec 2025 at 11:00am
Growth of rhombohedral boron nitride crystals using an iron flux
by W. Desrat, M. Moret, J. Plo, T. Michel, A. Ibanez, P. Valvin, V. Jacques, I. Philip-Robert, G. Cassabois, and B. Gil
Author(s): W. Desrat, M. Moret, J. Plo, T. Michel, A. Ibanez, P. Valvin, V. Jacques, I. Philip-Robert, G. Cassabois, and B. Gil


We report the growth of high-quality rhombohedral boron nitride (rBN) crystals by the iron flux method at atmospheric pressure. In contrast to the lamellar structure of standard hexagonal boron nitride (hBN) covering the metal ingot, the current synthesized BN shell is composed of many triangular bu…


[Phys. Rev. Materials 9, 124001] Published Mon Dec 01, 2025
1 Dec 2025 at 11:00am
Pressure and doping effects on the electronic structure and magnetism of the single-layer nickelate ${\mathrm{La}}_{2}{\mathrm{NiO}}_{4}$
by J. B. de Vaulx, F. Bernardini, V. Olevano, Q. N. Meier, and A. Cano
Author(s): J. B. de Vaulx, F. Bernardini, V. Olevano, Q. N. Meier, and A. Cano


${\mathrm{La}}_{2}{\mathrm{NiO}}_{4}$ is a prototypical member of the Ruddlesden-Popper nickelate series that offers a valuable reference point for elucidating the key ingredients behind the intriguing properties of these systems. However, the structural and electronic properties of ${\mathrm{La}}_{…


[Phys. Rev. Materials 9, 114804] Published Mon Nov 24, 2025
24 Nov 2025 at 11:00am
Correlation-promoted electron-phonon coupling and superconductivity in bulk FeSe
by Lan-Lin Du, Shiqi Hu, Yang Yang, Xuande Bu, and Sheng Meng
Author(s): Lan-Lin Du, Shiqi Hu, Yang Yang, Xuande Bu, and Sheng Meng


Electron-phonon coupling (EPC) plays an important role in FeSe, yet theoretical predictions have struggled to reconcile with experiments on doping- and pressure-dependent superconductivity. Here, we employ dynamical mean-field theory to investigate correlation-corrected EPC in FeSe under carrier dop…


[Phys. Rev. Materials 9, 114803] Published Fri Nov 21, 2025
21 Nov 2025 at 11:00am
In-plane Ni–O–Ni bond angles as structural fingerprints of superconductivity in layered nickelates: Effects of pressure, strain, layering, and correlations
by Bipasa Samanta and Alexandru B. Georgescu
Author(s): Bipasa Samanta and Alexandru B. Georgescu


We investigate the structural and electronic conditions conducive to superconductivity in layered nickelates using density-functional theory. For both the bilayer and 1–3 polymorphs of ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$, we find that the in-plane Ni–O–Ni bond angles under pressure …


[Phys. Rev. Materials 9, 114801] Published Mon Nov 03, 2025
3 Nov 2025 at 11:00am
Erratum: Modeling the high-pressure solid and liquid phases of tin from deep potentials with ab initio accuracy [Phys. Rev. Materials 7, 053603 (2023)]
by Tao Chen, Fengbo Yuan, Jianchuan Liu, Huayun Geng, Linfeng Zhang, Han Wang, and Mohan Chen
Author(s): Tao Chen, Fengbo Yuan, Jianchuan Liu, Huayun Geng, Linfeng Zhang, Han Wang, and Mohan Chen
[Phys. Rev. Materials 9, 109903] Published Tue Oct 28, 2025
28 Oct 2025 at 11:00am
Anisotropic hydrogen diffusivity in the superionic phase of C–H–O ternary system in ice giants
by Daisuke Murayama, Satoshi Ohmura, Ryosuke Kodama, and Norimasa Ozaki
Author(s): Daisuke Murayama, Satoshi Ohmura, Ryosuke Kodama, and Norimasa Ozaki


Hydrogen, oxygen, and carbon are—based on solar system abundances—the main components of ice giants such as Uranus and Neptune, forming the C−H−O ternary mixture. In the planetary interiors, these materials are subjected to extreme temperature and pressure conditions exceeding 1000 K and 100 GPa. Th…


[Phys. Rev. B 112, 214108] Published Tue Dec 09, 2025
9 Dec 2025 at 11:00am
Hydrogen bond symmetrization in high-pressure ice clathrates
by Lorenzo Monacelli, Maria Rescigno, Alasdair Nicholls, Umbertoluca Ranieri, Simone Di Cataldo, and Livia Eleonora Bove
Author(s): Lorenzo Monacelli, Maria Rescigno, Alasdair Nicholls, Umbertoluca Ranieri, Simone Di Cataldo, and Livia Eleonora Bove


Hydrogen bond symmetrization is a fundamental pressure-induced transformation in which the distinction between donor and acceptor sites vanishes, resulting in a symmetric hydrogen-bond network. While extensively studied in pure ice—most notably during the ice VII to ice X transition—this phenomenon …


[Phys. Rev. B 112, 214106] Published Mon Dec 08, 2025
8 Dec 2025 at 11:00am
Atomistic mechanism of the Mott transition in $\mathrm{PbCr}{\mathrm{O}}_{3}$
by Jian Chen, Yusheng Zhao, and Shanmin Wang
Author(s): Jian Chen, Yusheng Zhao, and Shanmin Wang


The Mott transition is primarily characterized by an isostructural insulator-metal transition in a correlated system under pressure, which is at the heart of many emergent phenomena. The associated transition mechanism, however, has been a long-standing challenge. Here we present a study of the mech…


[Phys. Rev. B 112, 235124] Published Mon Dec 08, 2025
8 Dec 2025 at 11:00am
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
Volume 45, Issue 3, September 2025, Page 195-209
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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
Volume 45, Issue 3, September 2025, Page 210-214
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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
Volume 45, Issue 3, September 2025, Page 269-287
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14 Jul 2025 at 7:17am
Pressure-induced phase transition in α-Bi₂O₃: evidence from synchrotron X-ray diffraction and Raman spectroscopy
by Zhenwu Zeng Hailian Hong Can Tian Jiayu Wang a Department of Physics, Faculty of Mechanical and Electrical Engineering, Sanming University, Sanming, People’s Republic of Chinab Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, People’s Republic of Chinac State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, People’s Republic of Chinad School of Physics and Optoelectronic Engineering, Hainan University, Haikou, People’s Republic of China
Volume 45, Issue 3, September 2025, Page 215-233
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29 Jul 2025 at 9:29am
Single-crystal X-ray diffraction study of the incommensurately modulated structure of flamite under high pressure
by Mark A. Ignatov Sergey V. Rashchenko Nikita E. Bogdanov Alexandr V. Romanenko Ella V. Sokol Svetlana N. Kokh a Sobolev Institute of Geology and Mineralogy Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russiab Department of Geology and Geophysics, Novosibirsk State University, Novosibirsk, Russia
Volume 45, Issue 3, September 2025, Page 256-268
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18 Aug 2025 at 4:27am
Structural, elastic and thermodynamic characteristics of trigonal-type Zintl phases CaZn2X2 (X = P or As) under hydrostatic pressure: prospects for advanced materials in high pressure and thermoelectric devices
by Missoum Radjai Abdelmadjid Bouhemadou Saber Saad Essaoud Djamel Allali Rabah Khenata Yarub Al-Douri a Laboratory of Physics of Experimental Techniques and Their Applications (LPTEAM), University of Yahia Fares, Medea, Algeriab Laboratory for Developing New Materials and their Characterizations, Department of Physics, Faculty of Science, Ferhat Abbas University – Setif 1, Setif, Algeriac Department of Physics, Faculty of Sciences, University of M'sila, M'sila, Algeriad Laboratory of materials and renewable energy, Faculty of science, University of M'sila, M'sila, Algeriae Physics and Chemistry of Materials Lab, Department of Physics, University of M'sila, M'sila, Algeriaf Laboratoire de Physique Quantique de la Matière et de Modélisation Mathématique (LPQ3M), Université de Mascara, Mascara, Algeriag College of Health and Medical Techniques, Al-Bayan University, Baghdad, Iraqh Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysiai Department of Mechanical Engineering, Faculty of Engineering, Piri Reis University, Istanbul, Turkey
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31 Oct 2025 at 10:07am