Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Georg Knebel"'
Autor:
Toni Helm, Motoi Kimata, Kenta Sudo, Atsuhiko Miyata, Julia Stirnat, Tobias Förster, Jacob Hornung, Markus König, Ilya Sheikin, Alexandre Pourret, Gerard Lapertot, Dai Aoki, Georg Knebel, Joachim Wosnitza, Jean-Pascal Brison
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract The potential spin-triplet heavy-fermion superconductor UTe2 exhibits signatures of multiple distinct superconducting phases. For field aligned along the b axis, a metamagnetic transition occurs at μ 0 H m ≈ 35 T. It is associated with ma
Externí odkaz:
https://doaj.org/article/beccf8699b3c410193946f03bf14ea0e
Autor:
Zhuo Yang, Benoît Fauqué, Toshihiro Nomura, Takashi Shitaokoshi, Sunghoon Kim, Debanjan Chowdhury, Zuzana Pribulová, Jozef Kačmarčík, Alexandre Pourret, Georg Knebel, Dai Aoki, Thierry Klein, Duncan K. Maude, Christophe Marcenat, Yoshimitsu Kohama
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Quantum oscillation phenomenon is an essential tool to understand the electronic structure of quantum matter. Here we report a systematic study of quantum oscillations in the electronic specific heat C el in natural graphite. We show that th
Externí odkaz:
https://doaj.org/article/fdcbb46e8a274bff9dfff8f96253cf72
Autor:
Fabrice Wilhelm, Jean-Pierre Sanchez, Daniel Braithwaite, Georg Knebel, Gérard Lapertot, Andrei Rogalev
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-7 (2023)
Abstract The recent discovery of superconductivity in paramagnetic UTe2 turns spotlight on a serious candidate for spin-triplet state. To draw a complete picture of the superconducting state in UTe2 precise knowledge of the electronic properties of t
Externí odkaz:
https://doaj.org/article/70ef481f25eb4ca296f8f54932a122af
Autor:
Edwin Herrera, Isabel Guillamón, Víctor Barrena, William J. Herrera, Jose Augusto Galvis, Alfredo Levy Yeyati, Ján Rusz, Peter M. Oppeneer, Georg Knebel, Jean Pascal Brison, Jacques Flouquet, Dai Aoki, Hermann Suderow
Publikováno v:
Nature
Nature, 2023, 616 (7957), pp.465-469. ⟨10.1038/s41586-023-05830-1⟩
Nature, 2023, 616 (7957), pp.465-469. ⟨10.1038/s41586-023-05830-1⟩
Two-dimensional electronic states at surfaces are often observed in simple wide-band metals such as Cu or Ag (refs. 1–4). Confinement by closed geometries at the nanometre scale, such as surface terraces, leads to quantized energy levels formed fro
Autor:
Dai Aoki, Ilya Sheikin, Alix McCollam, Jun Ishizuka, Youichi Yanase, Gerard Lapertot, Jacques Flouquet, Georg Knebel
Publikováno v:
Journal of the Physical Society of Japan
Journal of the Physical Society of Japan, 2023, 92 (6), pp.065002. ⟨10.7566/JPSJ.92.065002⟩
Journal of Physical Society of Japan, 92, 6, pp. 1-2
Journal of the Physical Society of Japan, 2023, 92 (6), pp.065002. ⟨10.7566/JPSJ.92.065002⟩
Journal of Physical Society of Japan, 92, 6, pp. 1-2
We performed de Haas-van Alphen (dHvA) experiments in the spin-triplet superconductor UTe2 for magnetic field along the c-axis above 15T. Three fundamental dHvA frequencies, named alpha1, alpha2 and beta corresponding to the cross sections of cylindr
Autor:
Fabrice Wilhelm, Jean-Pierre Sanchez, Daniel Braithwaite, Georg Knebel, Gérard Lapertot, Andrei Rogalev
The recent discovery of superconductivity in paramagnetic UTe2 turns spotlight on a serious candidate for spin-triplet state. It exhibits highly unusual transport and magnetic properties which are extremely sensitive to pressure. To draw a complete p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::feff98597aea19e7163a9c5519d1db4b
https://doi.org/10.21203/rs.3.rs-2361151/v1
https://doi.org/10.21203/rs.3.rs-2361151/v1
Autor:
Keita Ushida, Tatsuya Yanagisawa, Ruo Hibino, Masato Matsuda, Hiroyuki Hidaka, Hiroshi Amitsuka, Georg Knebel, Jacques Flouquet, Dai Aoki
The elastic constants of an unconventional superconductor, UTe$_2$, were investigated using ultrasound. In this paper, we report the elastic response of the normal state at temperatures down to 2 K and up to 14 T for $H \parallel b$ at ambient pressu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d294e08267b481ea33d9e3b5783fbf29
http://arxiv.org/abs/2211.08354
http://arxiv.org/abs/2211.08354
Autor:
Dai Aoki, Hironori Sakai, Petr Opletal, Yoshifumi Tokiwa, Jun Ishizuka, Youichi Yanase, Hisatomo Harima, Ai Nakamura, Dexin Li, Yoshiya Homma, Yusei Shimizu, Georg Knebel, Jacques Flouquet, Yoshinori Haga
Publikováno v:
Journal of the Physical Society of Japan
Journal of the Physical Society of Japan, 2022, 91 (8), ⟨10.7566/JPSJ.91.083704⟩
Journal of the Physical Society of Japan, 2022, 91 (8), ⟨10.7566/JPSJ.91.083704⟩
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d161f805f38a0c72026472d821859806
https://hal.science/hal-03763285
https://hal.science/hal-03763285
Autor:
Toni Helm, Motoi Kimata, Kenta Sudo, Atsuhiko Miyata, Julia Stirnat, Tobias Forster, Jacob Hornung, Markus König, Ilya Sheikin, Alexandre Pourret, Gérard Lapertot, Dai Aoki, Jean-Pascal Brison, Georg Knebel, Jochen Wosnitza
The potential spin-triplet heavy-fermion superconductor UTe2 exhibits signatures of multiple distinct superconducting phases. For field aligned along the b axis a metamagnetic transition occurs at μ0Hm ≈ 35 T. It is associated with a spin reorient
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07667ac09149b65ae23e36a8304f6c1b
https://doi.org/10.21203/rs.3.rs-1867420/v1
https://doi.org/10.21203/rs.3.rs-1867420/v1
Autor:
Jean-Pascal Brison, Alexandre Pourret, Dai Aoki, M. E. Zhitomirsky, Georg Knebel, Daniel Braithwaite, Michal Vališka, Gérard Lapertot, Fuminori Honda, Jacques Flouquet
Publikováno v:
Communications Physics, Vol 2, Iss 1, Pp 1-6 (2019)
Communications Physics
Communications Physics, 2019, 2 (1), pp.147. ⟨10.1038/s42005-019-0248-z⟩
Communications Physics
Communications Physics, 2019, 2 (1), pp.147. ⟨10.1038/s42005-019-0248-z⟩
The nearly ferromagnetic superconductor UTe2 shows several intriguing phenomena, including an extraordinary reinforcement of superconductivity in very strong magnetic fields. Here we show that pressure tunes the system to a more correlated state and