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.
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Retraction for Wei et al., Endothelial expression of hypoxia-inducible factor 1 protects the murine heart and aorta from pressure overload by suppression of TGF-β signaling
Proceedings of the National Academy of Sciences, Volume 121, Issue 10, March 2024.
26 Feb 2024 at 9:00am
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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
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
Pressure-dependent phase transitions in hybrid improper ferroelectric Ruddlesden-Popper oxides
by Gabriel Clarke, Dominik Daisenberger, X. Luo, S. W. Cheong, Nicholas C. Bristowe, and Mark S. Senn
Author(s): Gabriel Clarke, Dominik Daisenberger, X. Luo, S. W. Cheong, Nicholas C. Bristowe, and Mark S. Senn
The temperature-dependent phase transitions in Ruddlesden-Popper oxides with perovskite bilayers have been under increased scrutiny in recent years due to the so-called hybrid improper ferroelectricity that some chemical compositions exhibit. However, little is currently understood about the hydrost…
[Phys. Rev. B 109, 094107] Published Fri Mar 15, 2024
15 Mar 2024 at 11:00am
Competing ${d}_{xy}$ and ${s}_{±}$ pairing symmetries in superconducting ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$: $\mathrm{LDA}+\mathrm{FLEX}$ calculations
by Griffin Heier, Kyungwha Park, and Sergey Y. Savrasov
Author(s): Griffin Heier, Kyungwha Park, and Sergey Y. Savrasov
With recent discoveries of superconductivity in infinite–layer nickelates and in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ under high pressure, new opportunities appeared that yet another family of high-temperature superconductors based on Ni element may exist in nature, as was previously…
[Phys. Rev. B 109, 104508] Published Fri Mar 15, 2024
15 Mar 2024 at 11:00am
Electrical conductivity of copper under ultrahigh pressure and temperature conditions by both experiments and first-principles simulations
by Bo Gan (甘波), Jun Li (李俊), Junjie Gao (高俊杰), Qiru Zeng (曾琪茹), Wenhao Song (宋文豪), Yukai Zhuang (庄毓凯), Yingxin Hua (华颖鑫), Qiang Wu (吴强), Gang Jiang (蒋刚), Yuan Yin (尹远), and Youjun Zhang (张友君)
Author(s): Bo Gan (甘波), Jun Li (李俊), Junjie Gao (高俊杰), Qiru Zeng (曾琪茹), Wenhao Song (宋文豪), Yukai Zhuang (庄毓凯), Yingxin Hua (华颖鑫), Qiang Wu (吴强), Gang Jiang (蒋刚), Yuan Yin (尹远), and Youjun Zhang (张友君)
Copper (Cu) is ubiquitously utilized in industry owing to its exceptional electrical conductivity and serves as a standard material in shock compression experiments. However, a comprehensive understanding of the electrical and thermal transport properties of Cu under extreme pressure-temperature ($P…
[Phys. Rev. B 109, 115129] Published Fri Mar 15, 2024
15 Mar 2024 at 11:00am
Extraordinary suppression of the laser heating effect in ${\mathrm{ZrTe}}_{3}$ under pressure revealed by ultrafast spectroscopy
by Kai Zhang, Jiafeng Xie, Jin Yang, Tianwu Wang, Fuhai Su, Yirong Wu, and Guangyou Fang
Author(s): Kai Zhang, Jiafeng Xie, Jin Yang, Tianwu Wang, Fuhai Su, Yirong Wu, and Guangyou Fang
Photocarrier dynamics of the ${\mathrm{ZrTe}}_{3}$ under pressure are investigated using optical pump-probe (OPOP) spectroscopy in combination with a diamond anvil cell. A prominent laser heating effect is manifested, characterized by significant changes in the profiles and an elongation of the echo…
[Phys. Rev. B 109, 115130] Published Fri Mar 15, 2024
15 Mar 2024 at 11:00am
Estimating melting curves for Cu and Al from simulations at a single state point
by Laura Friedeheim, Felix Hummel, Jeppe C. Dyre, and Nicholas P. Bailey
Author(s): Laura Friedeheim, Felix Hummel, Jeppe C. Dyre, and Nicholas P. Bailey
Determining the melting curves of materials up to high pressures has long been a challenge experimentally and theoretically. A large class of materials, including most metals, has been shown to exhibit hidden scale invariance, an approximate scale invariance of the potential-energy landscape that is…
[Phys. Rev. B 109, 104109] Published Thu Mar 14, 2024
14 Mar 2024 at 11:00am
Pressure-tuned superconductivity in the Dirac semimetal PdTe
by Xiangming Kong, Zhaolong Liu, Xiangqi Liu, Chunqiang Xu, Zhenhai Yu, Jing Wang, Baomin Wang, Xiaofeng Xu, Yanfeng Guo, Rui Zhang, Xiaofan Yang, and Shiyan Li
Author(s): Xiangming Kong, Zhaolong Liu, Xiangqi Liu, Chunqiang Xu, Zhenhai Yu, Jing Wang, Baomin Wang, Xiaofeng Xu, Yanfeng Guo, Rui Zhang, Xiaofan Yang, and Shiyan Li
We report an unusual evolution of superconductivity (SC) in the three-dimensional Dirac semimetal PdTe with increasing pressure up to $∼50$ GPa. The compressed PdTe exhibits a sudden reversal in the superconducting transition temperature ${T}_{\mathrm{c}}$, from an initial decrease with pressure to …
[Phys. Rev. B 109, 104506] Published Thu Mar 14, 2024
14 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
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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
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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
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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
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11 Mar 2024 at 5:32am