Article
Materials Science, Multidisciplinary
Yu Liu, Xiao Tong, V. N. Ivanovski, Zhixiang Hu, Denis Leshchev, Xiangde Zhu, Hechang Lei, Eli Stavitski, Klaus Attenkofer, V. Koteski, C. Petrovic
Summary: By using various research methods, this study observes that intercalation of Cu and Ni in vdW materials can suppress CDW and enhance electronic correlations in the conducting states. Moreover, intercalation leads to lattice expansion and changes in the metal atom composition, which crucially influences the emergence of superconductivity.
Article
Physics, Applied
Yu Liu, Zhixiang Hu, Xiao Tong, Denis Leshchev, Xiangde Zhu, Hechang Lei, Eli Stavitski, Klaus Attenkofer, C. Petrovic
Summary: Two-dimensional transition metal trichalcogenides (TMTCs) have covalently bonded metal-chalcogen layers separated by the van der Waals (vdW) gap. ZrTe3 exhibits charge density waves (CDWs) below T CDW = 63 K and filamentary superconductivity below 2 K that can be enhanced by pressure or chemical substitution. The presence of mixed valent Zr2+ and Zr4+ atoms in ZrTe3 crystals are reduced by doping in ZrTe3-xSex and Zr1-yHfyTe3, enhancing superconductivity via disorder in Te2-Te3 atomic chains associated with CDW formation.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Mohammad Alidoosti, Davoud Nasr Esfahani, Reza Asgari
Summary: In this study, the effects of Kohn anomalies on the superconducting properties in monolayer blue phosphorene (BLP) were investigated using first-principles calculations. The results showed that strong electron-phonon coupling can lead to a maximum critical temperature of 97K in the case of low hole densities, while electron-doped systems achieve a maximum critical temperature of 38K at a doping level including a Lifshitz transition point.
Article
Nanoscience & Nanotechnology
Li-Na Wu, Si-Tong Yang, Jin-Ke Shen, Fei-Hu Liu
Summary: Through the pressure experiment, it is found that the CDW phase and the superconducting phase of NbTe4 respond differently to pressure. The CDW phase originates from Fermi surface nesting, while the superconducting phase is caused by electron-phonon interaction. Pressure can suppress the CDW instability and at 80 GPa, the superconducting gap of NbTe4 is closed. This suggests that the superconducting phase and CDW phase of NbTe4 may be competing with each other.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Physics, Multidisciplinary
Victor D. Lakhno
Summary: CDWs originate from TI bipolaron states in the pseudogap phase, forming a PDW with nesting wave vectors, coexisting with superconductivity and vanishing as a Bose condensate forms from TI bipolarons.
FRONTIERS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
A. Nomura, S. Kobayashi, S. Ohta, H. Sakata
Summary: In ZrTe3, different growth temperatures affect the transition temperatures of CDW, bulk SC, and filamentary SCs, with differences observed in the anisotropy of the upper critical field between filamentary SCs and bulk SC.
Article
Physics, Multidisciplinary
Makoto Maki, Yuji Fujimoto, Isamu Yamamoto, Junpei Azuma, Sora Kobayashi, Satoshi Demura, Hideaki Sakata
Summary: The electronic structure of ZrTe3 was studied using angle-resolved photoemission spectroscopy, and it was found that the charge-density wave (CDW) formed through Fermi surface nesting along the van-der-Waals stacking direction despite weak interlayer hybridization in ZrTe3.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2022)
Article
Chemistry, Physical
Junzhang Ma, Simin Nie, Xin Gui, Muntaser Naamneh, Jasmin Jandke, Chuanying Xi, Jinglei Zhang, Tian Shang, Yimin Xiong, Itzik Kapon, Neeraj Kumar, Yona Soh, Daniel Gosalbez-Martinez, Oleg Yazyev, Wenhui Fan, Hannes Huebener, Umberto De Giovannini, Nicholas Clark Plumb, Milan Radovic, Michael Andreas Sentef, Weiwei Xie, Zhijun Wang, Christopher Mudry, Markus Mueller, Ming Shi
Summary: Using angle-resolved photoemission spectroscopy, the authors detected mobile bound states of excitons in quasi-one-dimensional metallic TaSe3, providing evidence for the elusive exciton mobility in metals.
Article
Chemistry, Inorganic & Nuclear
Shujia Li, Qing Dong, Jiajia Feng, Yanju Wang, Mingqiang Hou, Wen Deng, Resta A. Susilo, Nana Li, Hongliang Dong, Shun Wan, Chunxiao Gao, Bin Chen
Summary: Under pressure, re-arrangement of intralayer atoms in 1T-NbTe2 leads to a structural phase transition and collapse of charge density wave. This transition results in a decrease in electronic correlation and a change in charge carrier type.
INORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Gan Liu, Xinran Ma, Kuanyu He, Qing Li, Hengxin Tan, Yizhou Liu, Jie Xu, Wenna Tang, Kenji Watanabe, Takashi Taniguchi, Libo Gao, Yaomin Dai, Hai-Hu Wen, Binghai Yan, Xiaoxiang Xi
Summary: Unusual large-frequency collective lattice excitations, known as amplitude modes, are observed in CsV3Sb5, a Kagome metal, in the absence of phonon softening, providing evidence of strong electron-phonon coupling.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jing Jin, Michelle Wurch, Saba Baraghani, Daniel J. Coyle, Thomas A. Empante, Fariborz Kargar, Alexander A. Balandin, Ludwig Bartels
Summary: This study presents the growth of quasi-one-dimensional zirconium tritelluride using CVD technique at low temperatures and short processing times. The material shows comparable electrical conductivity to bulk and exhibits a positive temperature coefficient. Various characterization techniques were employed to validate the composition and electrical properties of the material.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Yuki Nagai, Masa-aki Morikawa, Nobuo Kimizuka
Summary: Reversible vapochromism in the NIR region is achieved by altering the lipid molecular orientation through exclusion of crystallization water by organic vapor in a mixed-valence platinum complex with lipid counterions.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Tanusree Saha, Arindam Pramanik, Barbara Ressel, Alessandra Ciavardini, Fabio Frassetto, Federico Galdenzi, Luca Poletto, Arun Ravindran, Primoz Rebernik Ribic, Giovanni De Ninno
Summary: This study investigates the photoinduced transient phase and ground state recovery dynamics in the complex material 1T-TaS2 using femtosecond time- and angle-resolved photoemission spectroscopy. The results reveal similarities between the band structures of the transient and equilibrium phases, with evidence for coexistence of the Mott insulating and metallic phases. The study also finds that the recoveries of Mott and CDW orders begin simultaneously, highlighting their coupling. Additionally, a metastable phase is observed during the recovery process, which is driven by the CDW lattice order.
Article
Physics, Multidisciplinary
Yaning Cui, Tianhao Su, Lei Qiao, Zongquan Gu, Gianni Profeta, Alessandra Continenza, Wei Ren
Summary: We conducted an ab-initio study on monolayer BaBiO3 to explore the suppression of charge density wave (CDW) phase and the insulator-metal transition. By applying an electric field and charge doping, we found that the metallic phase can be stabilized, the CDW phase can be destroyed, and a metallic metastable phase can be induced. Furthermore, hole doping was also effective in suppressing the CDW phase and promoting a metallic phase with strong electron-phonon coupling, suggesting the possibility of achieving superconductivity. BaBiO3 in low dimensions demonstrates great flexibility in its electronic properties, which can be controlled by external tools such as electric fields and charge doping.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2023)
Article
Materials Science, Multidisciplinary
Topojit Debnath, Bishwajit Debnath, Roger K. Lake
Summary: This paper investigates the thermal conductivities and phonon properties of the metallic transition-metal trichalcogenides TaSe3 and ZrTe3, finding that they exhibit high breakdown current densities and good resilience to scaling, making them suitable for interconnect applications. However, significant differences are observed in thermal conductivities and phonon velocities between TaSe3 and ZrTe3.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Chemistry, Physical
Avishek Maity, Rajesh Dutta, Oles Sendtskyi, Monica Ceretti, Angelique Lebranchu, Dmitry Chernyshov, Alexei Bosak, Werner Paulus
Summary: Solid-state oxygen ion conductors with enhanced oxygen mobility at intermediate temperatures have been developed, but materials with high oxygen diffusion at room temperature are still rare. Single-crystalline Pr2NiO4+delta electrodes show remarkably high oxygen diffusion under ambient conditions, indicating the unexplored potential of single crystals as stand-alone electrodes for high-throughput solid oxygen ion conductors.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Laurent Guerin, Takefumi Yoshida, Edoardo Zatterin, Arkadiy Simonov, Dmitry Chernyshov, Hiroaki Iguchi, Bertrand Toudic, Shinya Takaishi, Masahiro Yamashita
Summary: This study investigates the atomic structure and stabilization mechanism of a 2D charge-density-wave (CDW) in a bromide-bridged Pd compound using the 3D-Delta pair distribution function method. The results show that the 2D CDW is stabilized by a hydrogen-bonding network and weak plane to plane correlation prevents 3D ordering. This study provides a method to identify and measure key interactions responsible for the dimensionality and stability of CDWs.
Article
Engineering, Electrical & Electronic
Rajesh Dutta, Henrik Thoma, Dmitry Chernyshov, Balint Nafradi, Takatsugu Masuda, Armin Kriele, Vladimir Hutanu
Summary: In this study, the authors conducted a systematic structural study of Ba2MnGe2O7 single crystal under varying temperatures using single crystal synchrotron radiation diffraction. The results provide detailed knowledge of the microscopic structural parameters and reveal interesting reflection phenomena. These findings are important for understanding the orbital hybridization in multiferroic Ba2MnGe2O7.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Chemistry, Multidisciplinary
Charles J. McMonagle, Adam A. L. Michalchuk, Dmitry Chernyshov
Summary: The variable-temperature single-crystal diffraction experiments using the Gandolfi method reveal the temperature evolution and structural transformations of FOX-7. Two first-order phase transitions are observed, accompanied by abrupt changes in volume and unit-cell dimensions. The experimental thermal expansion coefficients differ from those predicted from literature atomistic simulations.
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
(2022)
Article
Physics, Multidisciplinary
Steffen Kuhn, Charles Cheung, Natalia S. Oreshkina, Rene Steinbruegge, Moto Togawa, Sonja Bernitt, Lukas Berger, Jens Buck, Moritz Hoesch, Joern Seltmann, Florian Trinter, Christoph H. Keitel, Mikhail G. Kozlov, Sergey G. Porsev, Ming Feng Gu, F. Scott Porter, Thomas Pfeifer, Maurice A. Leutenegger, Zoltan Harman, Marianna S. Safronova, Jose R. Crespo Lopez-Urrutia, Chintan Shah
Summary: This study reveals the intensity ratio issue of Fe XVII transitions in x-ray astronomy and resolves the previous mystery by increasing the resolving power and signal-to-noise ratio.
PHYSICAL REVIEW LETTERS
(2022)
Article
Instruments & Instrumentation
J. Correa, M. Mehrjoo, R. Battistelli, F. Lehmkuehler, A. Marras, C. B. Wunderer, T. Hirono, V Felk, F. Krivan, S. Lange, I Shevyakov, V. Vardanyan, M. Zimmer, M. Hoesch, K. Bagschik, N. Guerrini, B. Marsh, I Sedgwick, G. Cautero, L. Stebel, D. Giuressi, R. H. Menk, A. Greer, T. Nicholls, W. Nichols, U. Pedersen, P. Shikhaliev, N. Tartoni, H. J. Hyun, S. H. Kim, S. Y. Park, K. S. Kim, F. Orsini, F. J. Iguaz, F. Buettner, B. Pfau, E. Ploenjes, K. Kharitonov, M. Ruiz-Lopez, R. Pan, S. Gang, B. Keitel, H. Graafsma
Summary: The PERCIVAL detector is a CMOS imager specifically designed for the soft X-ray regime. It has been used in various user experiments, such as ptychography, holographic imaging, and X-ray photon correlation spectroscopy. The detector has shown remarkable performance in terms of spatial resolution and frame rate, making it an attractive option for soft X-ray science.
JOURNAL OF SYNCHROTRON RADIATION
(2023)
Article
Chemistry, Multidisciplinary
Ilia Kochetygov, Jocelyn Roth, Jordi Espin, Sophia Pache, Anita Justin, Till Schertenleib, Nazanin Taheri, Dmitry Chernyshov, Wendy L. Queen
Summary: In this work, a new strategy for ligand design is proposed, using piperazine and dihydrophenazine units as substitutes for benzene rings, via simple nucleophilic aromatic substitution reactions without using transition metal catalysts. 21 carboxylate-based ligands with varying sizes, shapes, and denticity and 15 linear di- and tetra-nitriles were successfully synthesized. Moreover, 16 structurally diverse MOFs with surface areas up to 3100 m(2) g(-1) were synthesized using these ligands as building blocks.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Andrzej Grzechnik, Vaclav Petricek, Dmitry Chernyshov, Charles McMonagle, Tobias Geise, Hend Shahed, Karen Friese
Summary: The structures and phase transitions in Rb2V3O8 and K2V3O8 mixed-valence vanadate fresnoites were studied using synchrotron single-crystal diffraction. The modulated structure of K2V3O8 was better described in (3 + 2)-dimensional space below 115 K. The modulation mainly involves rotations of VO4 and VO5 building units and slight variation of K-O distances. The high-brilliance synchrotron beam suppresses the incommensurate phase and the postulated phase transition in Rb2V3O8 was not observed.
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
(2023)
Article
Chemistry, Physical
Huanyu Zhang, Giulia Paggiaro, Faruk Okur, Janis Huwiler, Claudia Cancellieri, Lars P. H. Jeurgens, Dmitry Chernyshov, Wouter van Beek, Maksym V. Kovalenko, Kostiantyn V. Kravchyk
Summary: The deployment of LLZO garnets as solid-state electrolytes for Li-metal solid-state batteries is hindered by the reactivity with water and carbon dioxide, leading to the formation of a contamination layer on the LLZO surface. High temperature annealing is studied as a thermal cleaning method, which effectively reduces the contamination but also results in the formation of a different phase on the LLZO surface. The impact of these factors on the performance of Li/LLZO/Li symmetrical cells was evaluated.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Julian Felix Baumgaertner, Michael Woerle, Christoph P. Guntlin, Frank Krumeich, Sebastian Siegrist, Valentina Vogt, Dragos C. Stoian, Dmitry Chernyshov, Wouter van Beek, Kostiantyn V. Kravchyk, Maksym V. Kovalenko
Summary: Pyrochlore-type iron (III) hydroxy fluorides (Pyr-IHF) are attractive as low-cost stationary energy storage materials due to their stable supply of constituent elements, high energy densities, and fast Li-ion diffusion. However, their commercial use is currently hindered by the high costs of synthesis and cathode architecture. In this study, a facile and cost-effective dissolution-precipitation synthesis method for Pyr-IHF from soluble iron (III) fluoride precursors is presented. The synthesized Pyr-IHF demonstrates high capacity retention of >80% after 600 cycles at a high current density of 1 A g(-1) without complex electrode engineering. Operando synchrotron X-ray diffraction is used to guide the selective synthesis of Pyr-IHF and investigate the effect of different water contents on rate capability. Li-ion diffusion is found to occur in the 3D hexagonal channels of Pyr-IHF formed by corner-sharing FeF6-x(OH)(x) octahedra.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
Moritz Hoesch, Olena Fedchenko, Mao Wang, Christoph Schlueter, Dmitrii Potorochin, Katerina Medjanik, Sergey Babenkov, Anca S. Ciobanu, Aimo Winkelmann, Hans-Joachim Elmers, Shengqiang Zhou, Manfred Helm, Gerd Schoenhense
Summary: Multiple dopant configurations of Te impurities in silicon are investigated using various techniques. Strong chemical core level shifts distinguish these configurations from isolated impurities. Multi-Te configurations, such as dimers or Te ions surrounding a vacancy, are clearly identified. The results contribute to understanding the exceptional activation of free charge carriers in hyperdoping of chalcogens in silicon.
APPLIED PHYSICS LETTERS
(2023)
Article
Microscopy
O. Tkach, T. -P. Vo, O. Fedchenko, K. Medjanik, Y. Lytvynenko, S. Babenkov, D. Vasilyev, Q. L. Nguyen, T. R. F. Peixoto, A. Gloskowskii, C. Schlueter, S. Chernov, M. Hoesch, D. Kutnyakhov, M. Scholz, L. Wenthaus, N. Wind, S. Marotzke, A. Winkelmann, K. Rossnagel, J. Minar, H. -J. Elmers, G. Schonhense
Summary: X-ray photoelectron diffraction (XPD) is a powerful technique that provides detailed structural information of solids and thin films, complementing electronic structure measurements. XPD patterns exhibit pronounced circular dichroism in the angular distribution (CDAD) with asymmetries up to 80%, alongside rapid variations on a small kll-scale. Measurements with circularly-polarized hard X-rays confirm that core-level CDAD is a general phenomenon independent of atomic number.
Article
Nanoscience & Nanotechnology
Quentin Guesnay, Charles J. McMonagle, Dmitri Chernyshov, Waqas Zia, Alexander Wieczorek, Sebastian Siol, Michael Saliba, Christophe Ballif, Christian M. Wolff
Summary: High-vacuum, single-source thermal evaporation is an appealing deposition process for perovskite photovoltaics due to its promise of homogeneous and controlled growth of pure and uniform films. Mechanical synthesis of substoichiometric cesium bromide-lead iodide precursors and subsequent deposition and conversion processes were studied. The results show that no new phases were formed during ball-milling, and halide exchange between precursors occurs during the evaporation process. Furthermore, films with higher cesium bromide content exhibit more impurities, while optimized cesium bromide content leads to photovoltaic devices with 15% efficiency at an optical bandgap of 1.7 eV.
Article
Physics, Multidisciplinary
J. Kuspert, R. Cohn Wagner, C. Lin, K. von Arx, Q. Wang, K. Kramer, W. R. Pudelko, N. C. Plumb, C. E. Matt, C. G. Fatuzzo, D. Sutter, Y. Sassa, J-Q Yan, J-S Zhou, J. B. Goodenough, S. Pyon, T. Takayama, H. Takagi, T. Kurosawa, N. Momono, M. Oda, M. Hoesch, C. Cacho, T. K. Kim, M. Horio, J. Chang
Summary: This study investigates the competition between the pseudogap and superconductivity for antinodal spectral weight in La-based cuprates.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Kristine Bakken, Anders B. Blichfeld, Inger-Emma Nylund, Dmitry Chernyshov, Julia Glaum, Tor Grande, Mari-Ann Einarsrud
Summary: This work reports on how heat treatment can be used to tailor the preferred orientation of BaTiO3 thin films deposited from aqueous chemical solution. The results demonstrate that the heating program greatly affects the crystallographic texture and preferred orientation of the films, and films with a high degree of preferred orientation show the strongest ferroelectric response.
