Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Opletal, Petr"'
Autor:
Tokunaga, Yo, Sakai, Hironori, Kambe, Shinsaku, Opletal, Petr, Tokiwa, Yoshifumi, Haga, Yoshinori, Kitagawa, Shunsaku, Ishida, Kenji, Aoki, Dai, Knebel, Georg, Lapertot, Gerard, Krämer, Steffen, Horvatić, Mladen
Our measurements of $^{125}$Te NMR relaxations reveal an enhancement of electronic spin fluctuations above $\mu_0H^*\sim15$ T, leading to their divergence in the vicinity of the metamagnetic transition at $\mu_0H_m\approx35$ T, below which field-rein
Externí odkaz:
http://arxiv.org/abs/2307.10724
Autor:
Vališka, Michal, Haidamak, Tetiana, Cabala, Andrej, Pospíšil, Jiří, Bastien, Gaël, Yanagisawa, Tatsuya, Opletal, Petr, Sakai, Hironori, Haga, Yoshinori, Miyata, Atsuhiko, Zherlitsyn, Sergei, Sechovský, Vladimír, Prokleška, Jan
The first-order transition line in the \textit{H-T} phase diagram of itinerant electron metamagnets terminates at the critical end point-analogous to the critical point on the gas-liquid condensation line in the \textit{p-T} phase diagram. To unravel
Externí odkaz:
http://arxiv.org/abs/2307.01884
Autor:
Opletal, Petr, Sakai, Hironori, Haga, Yoshinori, Tokiwa, Yoshifumi, Yamamoto, Etsuji, Kambe, Shinsaku, Tokunaga, Yo
We investigate the physical properties of a single crystal of uranium telluride U$_{7}$Te$_{12}$. We have confirmed that U$_{7}$Te$_{12}$ crystallizes in the hexagonal structure with three nonequivalent crystallographic uranium sites. The paramagneti
Externí odkaz:
http://arxiv.org/abs/2211.16760
Autor:
Aoki, Dai, Sakai, Hironori, Opletal, Petr, Tokiwa, Yoshifumi, Ishizuka, Jun, Yanase, Youichi, Harima, Hisatomo, Nakamura, Ai, Li, Dexin, Homma, Yoshiya, Shimizu, Yusei, Knebel, Georg, Flouquet, Jacques, Haga, Yoshinori
Publikováno v:
J. Phys. Soc. Jpn. 91, 083704 (2022)
We report the first observation of the de Haas-van Alphen (dHvA) effect in the novel spin-triplet superconductor UTe2 using high quality single crystals with the high residual resistivity ratio (RRR) over 200. The dHvA frequencies, named alpha and be
Externí odkaz:
http://arxiv.org/abs/2206.01363
Autor:
Tokunaga, Yo, Sakai, Hironori, Kambe, Shinsaku, Haga, Yoshinori, Tokiwa, Yoshifumi, Opletal, Petr, Fujibayashi, Hiroki, Kinjo, Katsuki, Kitagawa, Shunsaku, Ishida, Kenji, Nakamura, Ai, Shimizu, Yusei, Homma, Yoshiya, Li, Dexin, Honda, Fuminori, Aoki, Dai
Publikováno v:
Journal of the Physical Society of Japan 91, 023707 (2022)
$^{125}$Te NMR experiments in field ($H$) applied along the easy magnetization axis (the $a$-axis) revealed slow electronic dynamics developing in the paramagnetic state of UTe$_2$. The observed slow fluctuations are concerned with a successive growt
Externí odkaz:
http://arxiv.org/abs/2201.07455
Autor:
Opletal, Petr
This thesis focuses on the study of magnetic properties of three 5f electron itinerant ferromagnets UCo0.990Ru0.010Al, UCoGa and URhGa and investigation of their phase diagrams. The single crystals of high-quality were prepared by Czochralski method
Externí odkaz:
http://www.nusl.cz/ntk/nusl-409297
Magnetization isotherms of the 5f-electron ferromagnets URhGa, UCoGa and UCo0.98Ru0.02Al were measured at temperatures in the vicinity of their Curie temperature in order to investigate the critical behavior near the ferromagnetic phase transition. T
Externí odkaz:
http://arxiv.org/abs/2008.12061
Publikováno v:
Phys. Rev. B 102, 094409 (2020)
UCoGa and URhGa, two isostructural compounds show opposite signs of the initial response of Curie temperature to applied hydrostatic premenssure. To determine the physical origin of this contradiction the magnetization data measured with respect to t
Externí odkaz:
http://arxiv.org/abs/2006.13683
Surface magnetic domains of a UCoGa single crystal during magnetization/demagnetization processes in increasing/decreasing magnetic fields were investigated by means of magnetic-force-microscopy (MFM) images at low temperatures. The observed domain s
Externí odkaz:
http://arxiv.org/abs/2002.11517
Autor:
Opletal, Petr, Proschek, Petr, Vondráčková, Barbora, Aurélio, David, Sechovský, Vladimír, Prokleška, Jan
Single crystals of UCoGa have been grown in different conditions and subsequently annealed in order to provide a collection of samples representing various quality as to concentration of lattice defects. The different sample quality "grades" have bee
Externí odkaz:
http://arxiv.org/abs/1901.04806