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.

Growth of diamond in liquid metal at 1 atm pressure
by Yan Gong


Nature, Published online: 24 April 2024; doi:10.1038/s41586-024-07339-7

Diamond crystals and polycrystalline diamond films can be grown using liquid metal at standard pressure and high temperature instead of conventional high pressure and high temperature.
24 Apr 2024 at 12:00am

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Record-High ${T}_{c}$ and Dome-Shaped Superconductivity in a Medium-Entropy Alloy TaNbHfZr under Pressure up to 160 GPa
by Liyunxiao Wu, Jianguo Si, Shixue Guan, He Zhang, Jie Dou, Jun Luo, Jie Yang, Hui Yu, Jiawei Zhang, Xiaoli Ma, Pengtao Yang, Rui Zhou, Miao Liu, Fang Hong, and Xiaohui Yu
Author(s): Liyunxiao Wu, Jianguo Si, Shixue Guan, He Zhang, Jie Dou, Jun Luo, Jie Yang, Hui Yu, Jiawei Zhang, Xiaoli Ma, Pengtao Yang, Rui Zhou, Miao Liu, Fang Hong, and Xiaohui Yu


A new medium-entropy alloy, TaNbHfZr, under pressure sets a record high Tc in its class of materials at 15.3 K.


[Phys. Rev. Lett. 132, 166002] Published Tue Apr 16, 2024
16 Apr 2024 at 12:00pm
Feasible Route to High-Temperature Ambient-Pressure Hydride Superconductivity
by Kapildeb Dolui, Lewis J. Conway, Christoph Heil, Timothy A. Strobel, Rohit P. Prasankumar, and Chris J. Pickard
Author(s): Kapildeb Dolui, Lewis J. Conway, Christoph Heil, Timothy A. Strobel, Rohit P. Prasankumar, and Chris J. Pickard


First-principles structure predictions across a very wide range of chemical compositions suggest that the cubic Mg2IrH6 structure is dynamically stable at zero pressure, and is computed to have a Tc of around 160K.


[Phys. Rev. Lett. 132, 166001] Published Mon Apr 15, 2024
15 Apr 2024 at 12:00pm
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
Structural routes to stabilize superconducting ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ at ambient pressure
by Luke C. Rhodes and Peter Wahl
Author(s): Luke C. Rhodes and Peter Wahl


The bilayer perovskite ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ has recently been found to enter a superconducting state under hydrostatic pressure at temperatures as high as 80 K. The onset of superconductivity is observed concurrent with a structural transition which suggests that supe…


[Phys. Rev. Materials 8, 044801] Published Tue Apr 09, 2024
9 Apr 2024 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
Emergence of strong-coupling superconductivity and quantum criticality correlated with Lifshitz transitions in the alternate stacking compound $4{H}_{b}\text{−}\mathrm{Ta}{\mathrm{S}}_{2}$
by Shuxiang Xu, Junze Deng, Jingjing Gao, Fanyu Meng, Lifen Shi, Pengtao Yang, Ningning Wang, Ziyi Liu, Jianping Sun, Yoshiya Uwatoko, Hechang Lei, Xuan Luo, Yuping Sun, Nanlin Wang, Zhijun Wang, Bosen Wang, and Jinguang Cheng
Author(s): Shuxiang Xu, Junze Deng, Jingjing Gao, Fanyu Meng, Lifen Shi, Pengtao Yang, Ningning Wang, Ziyi Liu, Jianping Sun, Yoshiya Uwatoko, Hechang Lei, Xuan Luo, Yuping Sun, Nanlin Wang, Zhijun Wang, Bosen Wang, and Jinguang Cheng


$4{H}_{b}\text{−}\mathrm{Ta}{\mathrm{S}}_{2}$ is a naturally formed quasi-two-dimensional heterojunction material composed of alternating monolayers of insulating ($1T$-) and superconducting ($1H$-) $\mathrm{Ta}{\mathrm{S}}_{2}$. We report on a comprehensive high-pressure study on the interplay betw…


[Phys. Rev. B 109, 144522] Published Wed Apr 24, 2024
24 Apr 2024 at 12:00pm
Strontium ferrite under pressure: Potential analog to strontium ruthenate
by Azin Kazemi-Moridani, Sophie Beck, Alexander Hampel, A.-M. S. Tremblay, Michel Côté, and Olivier Gingras
Author(s): Azin Kazemi-Moridani, Sophie Beck, Alexander Hampel, A.-M. S. Tremblay, Michel Côté, and Olivier Gingras


As an alternative platform to unravel some of the perplexing characteristics of strontium ruthenate, we propose to study the isostructural and more correlated material strontium ferrite. Using density functional theory combined with dynamical mean-field theory, we attribute the experimentally observ…


[Phys. Rev. B 109, 165146] Published Wed Apr 24, 2024
24 Apr 2024 at 12:00pm
Ab initio studies on interactions in ${\mathrm{K}}_{3}{\mathrm{C}}_{60}$ under high pressure
by Jianyu Li, Zhangkai Cao, Jiahao Su, Ruipeng Wang, Haipeng Li, Yusuke Nomura, Xiaosen Yang, and Ho-Kin Tang
Author(s): Jianyu Li, Zhangkai Cao, Jiahao Su, Ruipeng Wang, Haipeng Li, Yusuke Nomura, Xiaosen Yang, and Ho-Kin Tang


Fullerene solids doped with alkali metals (${\mathrm{A}}_{3}{\mathrm{C}}_{60}$, A = K, Rb, Cs) exhibit a superconducting transition temperature ${T}_{c}$ as high as 40 K, and their unconventional superconducting properties have been a subject of debate. With the application of high pressure on ${\ma…


[Phys. Rev. B 109, 134513] Published Tue Apr 23, 2024
23 Apr 2024 at 12:00pm
Ultrahigh pressure shock compression of platinum up to 1.1 TPa: Melting and ionization
by Zhiguo Li, Long Hao, Xiang Wang, Guojun Li, Yong Hou, Qingsong Wang, Lei Liu, Huayun Geng, Yuying Yu, Chengda Dai, Qiang Wu, and Jianbo Hu
Author(s): Zhiguo Li, Long Hao, Xiang Wang, Guojun Li, Yong Hou, Qingsong Wang, Lei Liu, Huayun Geng, Yuying Yu, Chengda Dai, Qiang Wu, and Jianbo Hu


Shock compression experiments on platinum (Pt) were carried out by combining a two-stage gas gun with the unique high-Z three-stage gas gun launcher technique. The shock Hugoniot of Pt was determined in a wide pressure range of 0.2–1.1 TPa. These data fill the gap between the two-stage gas gun and m…


[Phys. Rev. B 109, 144109] Published Mon Apr 22, 2024
22 Apr 2024 at 12:00pm
Pressure-dependent excitonic instability and structural phase transition in ${\mathrm{Ta}}_{2}{\mathrm{NiS}}_{5}$: Raman and first-principles study
by Sukanya Pal, Arijit Sinha, Luminita Harnagea, Prachi Telang, D. V. S. Muthu, U. V. Waghmare, and A. K. Sood
Author(s): Sukanya Pal, Arijit Sinha, Luminita Harnagea, Prachi Telang, D. V. S. Muthu, U. V. Waghmare, and A. K. Sood


${\mathrm{Ta}}_{2}{\mathrm{NiS}}_{5}$, a semiconductor at ambient conditions, does not exhibit an excitonic insulating state like its selenium counterpart ${\mathrm{Ta}}_{2}{\mathrm{NiSe}}_{5}$, owing to its large band gap. Using a combination of Raman spectroscopy and analysis with first-principles…


[Phys. Rev. B 109, 155202] Published Mon Apr 22, 2024
22 Apr 2024 at 12:00pm
Stability of xenon-sodium compounds at moderately low pressures
by Junhao Peng, Shaoxiong Wang, Huafeng Dong, Minru Wen, Xin Zhang, and Fugen Wu
Author(s): Junhao Peng, Shaoxiong Wang, Huafeng Dong, Minru Wen, Xin Zhang, and Fugen Wu


A growing body of theoretical and experimental evidence suggests that inert gases (He, Ne, Ar, Kr, Xe, Rn) become less and less inert under increasing pressure. Here we use crystal structure prediction software based on the ab initio evolutionary algorithm, named uspex, to predict stable compounds o…


[Phys. Rev. B 109, L140103] Published Mon Apr 22, 2024
22 Apr 2024 at 12:00pm
Non-Fermi liquid and Hund correlation in ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ under high pressure
by Jing-Xuan Wang, Zhenfeng Ouyang, Rong-Qiang He, and Zhong-Yi Lu
Author(s): Jing-Xuan Wang, Zhenfeng Ouyang, Rong-Qiang He, and Zhong-Yi Lu


High temperature superconductivity was recently found in the bilayer nickelate ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ (La327), followed by the discovery of superconductivity in the trilayer ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ (La4310), under high pressure. Through stu…


[Phys. Rev. B 109, 165140] Published Fri Apr 19, 2024
19 Apr 2024 at 12:00pm
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
Effect of incubation temperature after high hydrostatic pressure treatment of Escherichia coli on the detection of injured populations
by Yoshiko NakauraClaudia SokKazuya MorimatsuKazutaka Yamamotoa Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba, Japanb Food Technology and Biotechnology, Technical University of Munich, Munich, Germanyc Faculty of Agriculture, Ehime University, Matsuyama, Japan
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4 Apr 2024 at 9:13am
Strong resistance to hydrogen embrittlement of high-performance superalloy MP35N under 200 MPa (≈30,000 psi) H2 gas pressure
by S. KlotzL. AmandE. Lelièvre-BernaR. KhasanovM. ElenderB. AnnighöferL. DelbesJ. MauriceC. PayreB. Doisneaua IMPMC, Sorbonne Université Paris, Franceb Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Sorbonne Université, Paris, Francec Institut Laue-Langevin Grenoble, Franced Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, Villigen PSI, Switzerlande Laboratoire Léon Brillouin, CE Saclay, Saclay, France
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18 Apr 2024 at 8:32am
Pressure and non-ideal axial ratio effects on thermodynamic properties of hexagonal close-packed Mg and Zn metals
by Nguyen Thi HongTran Thi HaiNguyen Thi DungHo Khac Hieua Hong Duc University, Dong Ve, Viet Namb Institute of Research and Development, Duy Tan University, Hai Chau, Viet Namc Faculty of Environmental and Natural Sciences, Duy Tan University, Hai Chau, Viet Nam
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23 Apr 2024 at 6:27am
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
Dissociation behavior of microbial nitrilase in temperature-pressure plane studied by using high pressure near-ultraviolet circular dichroism spectroscopy
by Ryo IshiguroTetsuro FujisawaFaculty of Engineering, Gifu University, Gifu, Japan
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20 Apr 2024 at 8:23am