Zobrazeno 1 - 10
of 650
pro vyhledávání: '"Goncharov, Alexander. F."'
Autor:
Goncharov, Alexander F., Chen, Huawei, Batyrev, Iskander G., Bykov, Maxim, Brüning, Lukas, Bykova, Elena, Kovalev, Valentin, Mahmood, Mohammad F., Mezouar, Mohamed, Garbarino, Gaston, Wright, Jonathan
We applied synchrotron single-crystal X-ray diffraction in a diamond anvil cell at 48-51 GPa and first-principles theoretical calculations to study the crystal structure of solid atomic iodine at high pressure. We report the synthesis of two phases o
Externí odkaz:
http://arxiv.org/abs/2410.03468
Autor:
Goncharov, Alexander F., Batyrev, Iskander G., Bykova, Elena, Brüning, Lukas, Chen, Huawei, Mahmood, Mohammad F., Steele, Andew, Giordano, Nico, Fedotenko, Timofey, Bykov, Maxim
Nitrogen represents an archetypal example of material exhibiting a pressure driven transformation from molecular to polymeric state. Detailed investigations of such transformations are challenging because of a large kinetic barrier between molecular
Externí odkaz:
http://arxiv.org/abs/2310.03570
Autor:
Wang, Mengqi, Wang, Yu, Liu, Zhixian, Xu, Ganyu, Yang, Bo, Yu, Pei, Sun, Haoyu, Ye, Xiangyu, Zhou, Jingwei, Goncharov, Alexander. F., Wang, Ya, Du, Jiangfeng
High-pressure diamond anvil cells have been widely used to create novel states of matter. Nevertheless, the lack of universal in-situ magnetic measurement techniques at megabar pressures makes it difficult to understand the underlying physics of mate
Externí odkaz:
http://arxiv.org/abs/2306.07840
Autor:
Xin, Jie, Gavriliuk, Alexander G., Hu, Jia-Wei, Zhang, Jian-Bo, Gu, Gen-Da, Struzhkin, Viktor V., Goncharov, Alexander F., Lin, Hai-Qing, Mao, Ho-Kwang, Chen, Xiao-Jia
The in-plane superexchange interaction $J$ of cuprate superconductors has long been suggested to be an important parameter for exploring their high-temperature superconductivity. The bilayer Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ is the most studied syst
Externí odkaz:
http://arxiv.org/abs/2304.11311
Autor:
Hu, Jia-Wei, Zhang, Kai, Ma, Yong-Chang, Wang, Nan-Lin, Struzhkin, Viktor V., Goncharov, Alexander F., Lin, Hai-Qing, Chen, Xiao-Jia
Exploring the origin of the pseudogap is important for the understanding of superconductivity in cuprates. Here we report a systematical experimental study on the phonon vibrational properties of Tl$_2$Ba$_2$Ca$_{n-1}$Cu$_n$O$_{2n+4+\delta}$ ($n$=1,2
Externí odkaz:
http://arxiv.org/abs/2304.11305
Autor:
Goncharov, Alexander F., Bykova, Elena, Bykov, Maxim, Edmund, Eric, Smith, Jesse S., Chariton, Stella, Prakapenka, Vitali B.
We investigated the stability of polymeric CO2 over a wide range of pressures, temperatures, and chemical environments. We find that the I-42d polymeric structure, consisting of a three-dimensional network of corner sharing CO4 tetrahedra, forms at 4
Externí odkaz:
http://arxiv.org/abs/2304.11224
Autor:
Troyan, Ivan A., Semenok, Dmitrii V., Ivanova, Anna G., Sadakov, Andrey V., Zhou, Di, Kvashnin, Alexander G., Kruglov, Ivan A., Sobolevskiy, Oleg A., Lyubutina, Marianna V., Perekalin, Dmitry S., Helm, Toni, Tozer, Stanley W., Bykov, Maxim, Goncharov, Alexander F., Pudalov, Vladimir M., Lyubutin, Igor S.
Publikováno v:
Advanced Science 2303622, 2023
We studied chemical interaction of Sn with H$_2$ by X-ray diffraction methods at pressures of 180-210 GPa. A previously unknown tetrahydride SnH$_4$ with a cubic structure (${fcc}$) exhibiting superconducting properties below ${T}$$_C$ = 72 K was obt
Externí odkaz:
http://arxiv.org/abs/2303.06339
Autor:
Zhang, Kai, Su, Fuhai, Liu, Dayong, Wang, Wenjun, Zhang, Yongsheng, Zeng, Zhi, Qu, Zhe, Goncharov, Alexander F.
We investigate the nonequilibrium photocarrier dynamics of WTe2 under pressure using the optical pump-probe spectroscopy. The pressure dependences of the electronic relaxation manifest anomalous changes around 0.8, 3.5, and 6 GPa, indicating the abru
Externí odkaz:
http://arxiv.org/abs/2303.04974
Autor:
Bykova, Elena, Batyrev, Iskander G., Bykov, Maxim, Edmund, Eric, Chariton, Stella, Prakapenka, Vitali B., Goncharov, Alexander F.
We applied single-crystal X-ray diffraction and Raman spectroscopy in a diamond anvil cell up to 36 GPa and first principles theoretical calculations to study the molecular dissociation of solid iodine at high pressure. Unlike previously reported, we
Externí odkaz:
http://arxiv.org/abs/2301.05657
Autor:
Yang, Hong, Armstrong, Michael R., Austin, Ryan A., Radousky, Harry B., Patel, Akshat Hetal, Wei, Tiwei, Goncharov, Alexander F., Mao, Wendy L., Granados, Eduardo, Lee, Hae Ja, Nam, Inhyuk, Nagler, Bob, Walter, Peter, Belof, Jonathan L., Brown, Shaughnessy B., Prakapenka, Vitali, Lobanov, Sergey S., Prescher, Clemens, Holtgrewe, Nicolas, Stavrou, Elissaios
Publikováno v:
Journal of Applied Physics; 8/7/2024, Vol. 136 Issue 5, p1-9, 9p