Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Lapertot, Gérard"'
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:
Aoki, Dai, Sheikin, Ilya, McCollam, Alix, Ishizuka, Jun, Yanase, Youichi, Lapertot, Gerard, Flouquet, Jacques, Knebel, Georg
Publikováno v:
J. Phys. Soc. Jpn. 92, 065002 (2023)
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
Externí odkaz:
http://arxiv.org/abs/2304.07678
Autor:
Helm, Toni, Kimata, Motoi, Sudo, Kenta, Miyata, Atsuhiko, Stirnat, Julia, Förster, Tobias, Hornung, Jacob, König, Markus, Sheikin, Ilya, Pourret, Alexandre, Lapertot, Gérard, Aoki, Dai, Knebel, Georg, Wosnitza, Jochen, Brison, Jean-Pascal
Publikováno v:
Nat Commun 15, 37 (2024)
The potential spin-triplet heavy-fermion superconductor UTe$_2$ exhibits signatures of multiple distinct superconducting phases. For field aligned along the $b$ axis, a metamagnetic transition occurs at $\mu_0 H_\mathrm{m}\approx35\,$T. It is associa
Externí odkaz:
http://arxiv.org/abs/2207.08261
Autor:
Rosuel, Adrien, Marcenat, Christophe, Knebel, Georg, Klein, Thierry, Pourret, Alexandre, Marquardt, Nils, Niu, Qun, Rousseau, Simon, Demuer, Albin, Seyfarth, Gabriel, Lapertot, Gérard, Aoki, Dai, Braithwaite, Daniel, Flouquet, Jacques, Brison, Jean-Pascal
The recently discovered superconductor UTe$_2$, with a T$_c$ between 1.5~K and 2~K, is attracting much attention due to strong suspicion of spin-triplet and topological superconductivity. Its properties under magnetic field are also remarkable, with
Externí odkaz:
http://arxiv.org/abs/2205.04524
Autor:
Willa, Kristin, Hardy, Frédéric, Aoki, Dai, Li, Dexin, Wiecki, Paul, Lapertot, Gérard, Meingast, Christoph
The normal-state out of which unconventional superconductivity in UTe$_2$ emerges is studied in detail using a variety of thermodynamic and transport probes. Clear evidence for a broad Schottky-like anomaly with roughly R ln 2 entropy around $T^{*} \
Externí odkaz:
http://arxiv.org/abs/2107.02706
Autor:
Niu, Qun, Knebel, Georg, Braithwaite, Daniel, Aoki, Dai, Lapertot, Gérard, Vališka, Michal, Seyfarth, Gabriel, Knafo, William, Helm, Toni, Brison, Jean-Pascal, Flouquet, Jacques, Pourret, Alexandre
Publikováno v:
Phys. Rev. Research 2, 033179 (2020)
Thermoelectric power ($S$) and Hall effect ($R_\mathrm{H}$) measurements on the paramagnetic superconductor UTe$_2$ with magnetic field applied along the hard magnetization $b$-axis are reported. The first order nature of the metamagnetic transition
Externí odkaz:
http://arxiv.org/abs/2003.08986
Autor:
Knebel, Georg, Kimata, Motoi, Vališka, Michal, Honda, Fuminori, Li, Dexin, Braithwaite, Daniel, Lapertot, Gérard, Knafo, William, Pourret, Alexandre, Sato, Yoshiki J., Shimizu, Yusei, Kihara, Takumi, Brison, Jean-Pascal, Flouquet, Jacques, Aoki, Dai
Publikováno v:
J. Phys. Soc. Jpn. 89, 053707 (2020)
We studied the anisotropy of the superconducting upper critical field $H_{\rm c2}$ in the heavy-fermion superconductor UTe$_2$ under hydrostatic pressure by magnetoresistivity measurements. In agreement with previous experiments we confirm that super
Externí odkaz:
http://arxiv.org/abs/2003.08728
Autor:
Aoki, Dai, Nakamura, Ai, Honda, Fuminori, Li, DeXin, Homma, Yoshiya, Shimizu, Yusei, Sato, Yoshiki J., Knebel, Georg, Brison, Jean-Pascal, Pourret, Alexandre, Braithwaite, Daniel, Lapertot, Gerard, Niu, Qun, Valiska, Michal, Harima, Hisatomo, Flouquet, Jacques
The spin-triplet state is most likely realized in uranium ferromagnetic superconductors, UGe2, URhGe, UCoGe. The microscopic coexistence of ferromagnetism and superconductivity means that the Cooper pair should be realized under the strong internal f
Externí odkaz:
http://arxiv.org/abs/2003.04055
Autor:
Niu, Qun, Knebel, Georg, Braithwaite, Daniel, Aoki, Dai, Lapertot, Gérard, Seyfarth, Gabriel, Brison, Jean-Pascal, Flouquet, Jacques, Pourret, Alexandre
Publikováno v:
Phys. Rev. Lett. 124, 086601 (2020)
We present different transport measurements up to fields of 29~T in the recently discovered heavy-fermion superconductor UTe$_{2}$ with magnetic field $H$ applied along the easy magnetization a-axis of the body-centered orthorhombic structure. The th
Externí odkaz:
http://arxiv.org/abs/1907.11118
Autor:
Knebel, Georg, Knafo, William, Pourret, Alexandre, Niu, Qun, Vališka, Michal, Braithwaite, Daniel, Lapertot, Gérard, Nardone, Marc, Zitouni, Abdelaziz, Mishra, Sanu, Sheikin, Ilya, Seyfahrt, Gabriel, Brison, Jean-Pascal, Aoki, Dai, Flouquet, Jacques
Publikováno v:
J. Phys. Soc. Jpn. 88, 063707 (2019)
We present a study of the upper critical field of the newly discovered heavy fermion superconductor UTe$_2$ by magnetoresistivity measurements in pulsed magnetic fields up to 60~T and static magnetic fields up to 35~T. We show that superconductivity
Externí odkaz:
http://arxiv.org/abs/1905.05181