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.

Ultrahigh-pressure crystallographic passage towards metallic hydrogen
by Cheng Ji


Nature, Published online: 14 May 2025; doi:10.1038/s41586-025-08936-w

The observation of the transition from hcp H2 to a post-hcp structure with a six-fold larger supercell at pressures above 212 GPa is reported, indicating the trend of H2 polymerization through molecular association.
14 May 2025 at 12:00am
Single-cell elderly blood–CSF atlas implicates peripherally influenced immune dysregulation in normal pressure hydrocephalus
by Phan Q. DuyEmre KiziltugAna B.W. GreenbergNeel H. MehtaLe T. HaoCarla FortesSusan MullanyBaojian FanAni ManichaikulAndrew F. TeichDiane ChanSeth L. AlperBradley T. HymanSteven E. ArnoldGuy M. McKhannMatthew P. FroschKristopher T. KahleaDepartment of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114bDepartment of Genome Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, VA 22903cDepartment of Pathology and Cell Biology, Columbia University, New York, NY 10032dDepartment of Neurology, Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Columbia University, New York, NY 10032eDepartment of Neurology, Columbia University, New York, NY 10032fDepartment of Neurology, Massachusetts General Hospital, Boston, MA 02114gDivision of Nephrology and Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02115hDepartment of Medicine, Harvard Medical School, Boston, MA 02115iBroad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA 02142jDepartment of Neurosurgery, Columbia University, New York, NY 10032kDepartment of Pathology, Massachusetts General Hospital, Boston, MA 02114
Proceedings of the National Academy of Sciences, Volume 122, Issue 19, May 2025.
We have generated a single-cell RNA sequencing atlas of peripheral blood and ventricular CSF in idiopathic normal pressure hydrocephalus (iNPH) patients totaling 140,207 single-cell transcriptomes. We found proinflammatory alterations in peripheral blood ...
5 May 2025 at 9:00am

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Superconductivity in Trilayer Nickelate ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ under Pressure
by Mingxin Zhang et al.
Author(s): Mingxin Zhang et al.


The emergence of superconductivity in the Ruddlesden-Popper phase nickelate La4Ni3O10 around 25 K under high pressure opens new search avenues for unconventional superconductivity in bulk materials.


[Phys. Rev. X 15, 021005] Published Fri Apr 04, 2025
4 Apr 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
Impact of magnetism on Fe phase diagram under extreme conditions
by Grigory S. Smirnov, Oleg E. Peil, Andrei V. Ruban, Sergei I. Simak, and Anatoly B. Belonoshko
Author(s): Grigory S. Smirnov, Oleg E. Peil, Andrei V. Ruban, Sergei I. Simak, and Anatoly B. Belonoshko


Iron is a major component of the cores of the Earth and inhabited exoplanets. Its phase diagram at extreme pressures (P) and temperatures (T) is the subject of extensive debate. While recent experiments provide evidence for the stability of the body-centered cubic (bcc) phase, several theoretical st…


[Phys. Rev. Materials 9, L040601] Published Wed Apr 23, 2025
23 Apr 2025 at 12:00pm
${\mathrm{Ni}}^{1+δ}$ metallic state and purely $\mathrm{Ni}\text{−}{d}_{{x}^{2}−{y}^{2}}$-occupied Fermi surface in ${\mathrm{SrNiO}}_{2}$-based superlattices at ambient pressure
by Miao Li, Zhenyu Ding, Yuqiang Liu, Liangyu Li, Gang Wu, and Xiaoping Yang
Author(s): Miao Li, Zhenyu Ding, Yuqiang Liu, Liangyu Li, Gang Wu, and Xiaoping Yang


The rich physics of nickelates has garnered widespread attention, particularly for their superconductivity and the prominent $\mathrm{Ni}\text{−}{d}_{{x}^{2}−{y}^{2}}$-dominated Fermi surface. Motivated by the ${\mathrm{Ni}}^{1+δ}$ superconductivity in infinite-layer ${\mathrm{NdNiO}}_{2}$ (${T}_{c}…


[Phys. Rev. Materials 9, 044802] Published Mon Apr 21, 2025
21 Apr 2025 at 12:00pm
Pressure-tuning the spatial extension of polarons and charge mobilities in polar insulators
by Pravin Karna and Ashutosh Giri
Author(s): Pravin Karna and Ashutosh Giri


Originating from the coupling of excess charge with the ionic vibrations, polaron formation is a pervasive phenomenon that has been observed in different types of materials. Depending on their spatial extensions, these quasiparticles have conventionally been categorized into small or large polarons …


[Phys. Rev. Materials 9, 034604] Published Mon Mar 31, 2025
31 Mar 2025 at 12:00pm
Chemical pressure tuning of multipolar and magnetic orders in $\mathrm{B}{\mathrm{a}}_{2}(\mathrm{C}{\mathrm{d}}_{1−x}\mathrm{C}{\mathrm{a}}_{x})\mathrm{Re}{\mathrm{O}}_{6}$ double perovskites
by Koki Shibuya, Daigorou Hirai, and Koshi Takenaka
Author(s): Koki Shibuya, Daigorou Hirai, and Koshi Takenaka


Double perovskite compounds containing $5d$ transition metal elements have been extensively studied as platforms for multipolar order phenomena stemming from spin-orbit-entangled $5d$ electrons. In this study, we examine the interplay between crystal structure, multipolar order, and magnetic order i…


[Phys. Rev. Materials 9, 034406] Published Mon Mar 10, 2025
10 Mar 2025 at 11:00am
Effect of hydrostatic pressure on the Weyl-mediated multiple magnetic states in the noncentrosymmetric semimetal NdAlSi
by Tong Shi, Xiaoxiao Zhang, Pengtao Yang, Ziyi Liu, Jinfeng Wang, Qingxin Dong, Jianping Sun, Yoshiya Uwatoko, Zhijun Wang, Zhaoming Tian, Genfu Chen, Bosen Wang, and Jinguang Cheng
Author(s): Tong Shi, Xiaoxiao Zhang, Pengtao Yang, Ziyi Liu, Jinfeng Wang, Qingxin Dong, Jianping Sun, Yoshiya Uwatoko, Zhijun Wang, Zhaoming Tian, Genfu Chen, Bosen Wang, and Jinguang Cheng


We report the hydrostatic pressure effect on multiple magnetic states of noncentrosymmetric semimetal NdAlSi through electrical transport in a cubic anvil pressure cell up to 12.0 GPa. NdAlSi undergoes two successive magnetic transitions, an antiferromagnetic [AFM(I)] order at ${T}_{\mathrm{m}1}∼7.2…


[Phys. Rev. B 111, 174422] Published Tue May 13, 2025
13 May 2025 at 12:00pm
Bidirectional optimization of transport properties for thermoelectric performance via hydrostatic pressure in chalcopyrite $\mathrm{Ag}X{\mathrm{Te}}_{2}$ $(X=\mathrm{In}, \mathrm{Ga})$
by Siqi Guo, Jincheng Yue, Jiongzhi Zheng, Hui Zhang, Ning Wang, Junda Li, Yanhui Liu, and Tian Cui
Author(s): Siqi Guo, Jincheng Yue, Jiongzhi Zheng, Hui Zhang, Ning Wang, Junda Li, Yanhui Liu, and Tian Cui


Pressure tuning has emerged as a powerful strategy for manipulating the thermoelectric properties of materials by inducing structural and electronic modifications. Herein, we systematically investigate the transport properties and thermoelectric performance concerning lattice distortions induced by …


[Phys. Rev. B 111, 184312] Published Mon May 12, 2025
12 May 2025 at 12:00pm
Theoretical study on pressure-induced phase transition behavior of realgar $\mathrm{A}{\mathrm{s}}_{4}{\mathrm{S}}_{4}$ confirmed by vibrational properties and effective mass
by Sheng-Hai Zhu, Hong Zhang, Han Qin, and Xin-Lu Cheng
Author(s): Sheng-Hai Zhu, Hong Zhang, Han Qin, and Xin-Lu Cheng


Experimental studies on pressure-induced phase transitions of realgar have been controversial, with experimental results from three different research groups showing that realgar exhibits different types of phase transition behavior at pressures below 20 GPa. Due to the important role of van der Waa…


[Phys. Rev. B 111, 195206] Published Mon May 12, 2025
12 May 2025 at 12:00pm
Layer-dependent anisotropic structural evolution in $1{T}^{′}\text{−}{\mathrm{ReSe}}_{2}$: Pressure-induced phonon dynamics
by Yuting Yan (严雨婷), Liyuan Chen (陈丽媛), Zian Hong (洪子安), Kai Dai (戴凯), Yafang Li (李亚芳), Kai Jiang (姜凯), Ziyou Zhang (张自由), Hongliang Dong (董洪亮), Liyan Shang (商丽燕), and Zhigao Hu (胡志高)
Author(s): Yuting Yan (严雨婷), Liyuan Chen (陈丽媛), Zian Hong (洪子安), Kai Dai (戴凯), Yafang Li (李亚芳), Kai Jiang (姜凯), Ziyou Zhang (张自由), Hongliang Dong (董洪亮), Liyan Shang (商丽燕), and Zhigao Hu (胡志高)


Rhenium diselenide (${\mathrm{ReSe}}_{2}$) presents pronounced lattice anisotropy and relatively weak interlayer interactions, which can result in its superior compressibility under pressure, as compared to other two-dimensional (2D) transition metal dichalcogenides (TMDs). Here, we employed diamond…


[Phys. Rev. B 111, 195303] Published Mon May 12, 2025
12 May 2025 at 12:00pm
Increasing the proximity-induced spin-orbit coupling in bilayer $\text{graphene}/{\mathrm{WSe}}_{2}$ heterostructures with pressure
by Bálint Szentpéteri, Albin Márffy, Máté Kedves, Endre Tóvári, Bálint Fülöp, István Kükemezey, András Magyarkuti, Kenji Watanabe, Takashi Taniguchi, Szabolcs Csonka, and Péter Makk
Author(s): Bálint Szentpéteri, Albin Márffy, Máté Kedves, Endre Tóvári, Bálint Fülöp, István Kükemezey, András Magyarkuti, Kenji Watanabe, Takashi Taniguchi, Szabolcs Csonka, and Péter Makk


Combining graphene with transition metal dichalcogenides (TMDs) leads to enhanced spin-orbit coupling (SOC) in graphene. The induced SOC has a large effect on the low-energy part of the band structure, leading to or stabilizing topological phases or superconductivity. Here, the pressure dependence o…


[Phys. Rev. B 111, 205415] Published Mon May 12, 2025
12 May 2025 at 12:00pm
Pressure-induced phonon softening and superconductivity in the topological semimetal $\mathrm{Zr}{\mathrm{P}}_{2}$
by Zhuyi Zhang, Xuliang Chen, Shuyang Wang, Chao An, Lili Zhang, Yonghui Zhou, Jian Zhou, and Zhaorong Yang
Author(s): Zhuyi Zhang, Xuliang Chen, Shuyang Wang, Chao An, Lili Zhang, Yonghui Zhou, Jian Zhou, and Zhaorong Yang


In this work, we have systematically investigated the structural, vibrational, and electrical transport properties of topological semimetal $\mathrm{Zr}{\mathrm{P}}_{2}$ under pressure using synchrotron x-ray diffraction (XRD), Raman spectroscopy, electrical resistance, and Hall-effect measurements,…


[Phys. Rev. B 111, 174510] Published Thu May 08, 2025
8 May 2025 at 12:00pm
Orbital selectivity in electronic correlations and spin instabilities in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$
by Min Liu and Xiaohong Shao
Author(s): Min Liu and Xiaohong Shao


Recently, the signatures of superconductivity with ${T}_{c}\phantom{\rule{4pt}{0ex}}≈$ 80 K in pressured ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ has garnered significant attention, which makes it a new candidate of the high-temperature superconductors dominated by $3d$ transition elemen…


[Phys. Rev. B 111, 195116] Published Thu May 08, 2025
8 May 2025 at 12:00pm
In situ electrical conductivity measurement of saturated rocks at shallow crustal temperatures and pressures in an autoclave
by Chaoyi Xiao Shuangming Shan Heping Li Sen Lin Shengbin Li a Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People’s Republic of Chinab University of Chinese Academy of Sciences, Beijing, People’s Republic of China
Volume 45, Issue 1, March 2025, Page 57-66
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24 Dec 2024 at 7:38am
Temperature gradients in high pressure multi-anvil cell
by Takuya Moriguti Akira Yoneda Eiji Ito a Institute for Planetary Materials, Okayama University, Misasa, Tottori, Japanb Department of Earth and Space Science, Osaka University, Toyonaka, Osaka, Japan
Volume 45, Issue 1, March 2025, Page 1-16
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19 Dec 2024 at 1:29pm
Pressure-sensitive germanate glass-Li2GeO3, a multifunctional energy material: a theoretical study
by R. Zosiamliana L. Celestine Lalhriat Zuala B. Chettri Zodin Mawia G. Abdurakhmanov A. Laref Shalika R. Bhandari D. P. Rai a Physical Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl, Indiab Department of Physics, Mizoram University, Aizawl, Indiac Department of Physics, North-Eastern Hill University, Shillong, Indiad National University of Uzbekistan, Tashkent, Uzbekistane Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabiaf Department of Physics, Bhairahawa Multiple Campus, Tribhuvan University, Rupandehi, Nepal
Volume 45, Issue 1, March 2025, Page 29-56
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25 Dec 2024 at 7:29am
High pressure behavior of incommensurately modulated nyerereite structure
by N. Bogdanov S. Rashchenko P. Gavryushkin V. Thomas D. Fursenko Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russia
Volume 45, Issue 1, March 2025, Page 67-78
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27 Dec 2024 at 8:15am
Crystalline state in a pressure region of proceeding amorphization of SnI4
by Kazuhiro Fuchizaki Hiroki Naruta Fumiya Sato Tomohiro Ohuchi Akio Suzuki a Department of Physics, Ehime University, Matsuyama, Japanb Graduate School of Science and Engineering, Ehime University, Matsuyama, Japanc Geodynamics Research Center, Ehime University, Matsuyama, Japand Department of Earth Science, Tohoku University, Sendai, Japan
Volume 45, Issue 1, March 2025, Page 90-107
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13 Jan 2025 at 12:09pm
High pressure Raman spectroscopy of boron-rich boron carbides up to 50 GPa
by Raimundas Sereika Seth Iwan Paul A. Baker Yogesh K. Vohra Department of Physics, University of Alabama at Birmingham, Birmingham, AL, USA
Volume 45, Issue 1, March 2025, Page 79-89
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6 Jan 2025 at 8:55am
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
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13 Mar 2025 at 11:57am
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
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19 Feb 2025 at 7:57am
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
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21 Apr 2025 at 5:23am