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The spin-triplet superconductor UTe$_2$ shows spontaneous time-reversal symmetry breaking and multiple superconducting phases in some crystals, implying chiral superconductivity. Here we microscopically image the local magnetic fields and…

Although nodal spin-triplet topological superconductivity appears probable in UTe2, its superconductive order-parameter $\Delta_k$ remains unestablished. In theory, a distinctive identifier would be the existence of a superconductive…

The recently discovered spin-triplet superconductor candidate UTe2 with Tc = 2 K has attracted enormous attention because it possesses many interesting properties, such as the extremely high upper critical field Hc2(0), chiral…

超导电性 · 物理学 2026-05-12 Qing Li , Zhe-Ning Xiang , Bin-Bin Zhang , Ying-Jie Zhang , Chaofan Zhang , Hai-Hu Wen

Superconductivity in UTe$_{2}$ has garnered significant attention, as it is widely recognized as a promising candidate for a spin-triplet superconductor. However, the symmetry of superconductivity and the microscopic origin of spin-triplet…

超导电性 · 物理学 2025-10-17 Ryuji Hakuno , Youichi Yanase

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…

The discovery of unconventional superconductivity in the heavy-fermion material UTe$_2$ has reinvigorated research of spin-triplet superconductivity. We perform a theoretical study of coupled two-component spin-triplet superconducting order…

超导电性 · 物理学 2024-02-23 Henrik S. Røising , Max Geier , Andreas Kreisel , Brian M. Andersen

Superconducting (SC) state has spin and orbital degrees of freedom, and spin-triplet superconductivity shows multiple SC phases due to the presence of these degrees of freedom. However, the observation of spin-direction rotation occurring…

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…

Low-temperature thermal conductivity measurements were performed on single crystals of TlNi$_2$Se$_2$, a nickel-chalcogenide heavy-electron superconductor with $T_c$ $\simeq$ 3.7 K. In zero field, the residual electronic contribution at $T$…

超导电性 · 物理学 2015-06-22 X. C. Hong , Z. Zhang , S. Y. Zhou , J. Pan , Y. Xu , Hangdong Wang , Qianhui Mao , Minghu Fang , J. K. Dong , S. Y. Li

The crystal structure of the new superconductor UTe2 has been investigated for the first time at low temperature (LT) of 2.7 K, just closely above the superconducting transition temperature of about 1.7 K by single crystal neutron…

超导电性 · 物理学 2019-05-14 V. Hutanu , H. Deng , S. Ran , W. T. Fuhrman , H. Thoma , N. P. Butch

The thermal conductivity of organic superconductor kappa-(BEDT-TTF)2Cu(NCS)2 (Tc =10.4 K) has been studied in a magnetic field rotating within the 2D superconducting planes with high alignment precision. At low temperatures (T < 0.5 K), a…

超导电性 · 物理学 2009-11-07 Koichi Izawa , Hidemasa Yamaguchi , Takahiko Sasaki , Yuji Matsuda

To clarify the superconducting gap structure of the spin-triplet superconductor Sr_2RuO_4, the in-plane thermal conductivity has been measured as a function of relative orientations of the thermal flow, the crystal axes, and a magnetic…

超导电性 · 物理学 2009-10-31 K. Izawa , H. Takahashi , H. Yamaguchi , Yuji Matsuda , M. Suzuki , T. Sasaki , T. Fukase , Y. Yoshida , R. Settai , Y. Onuki

We explore the pairing state and gap structure of UTe$_2$ using a six-orbital model which we call the $f$-$d$-$p$ model. Our model accurately reproduces the quasi-two-dimensional Fermi surfaces consistent with recent de Haas-van Alphen…

超导电性 · 物理学 2025-12-16 Shingo Haruna , Takuji Nomura , Hirono Kaneyasu

We report ^{11}B and ^{195}Pt NMR measurements in non-centrosymmetric superconductor Li_2Pt_3B. We find that the spin susceptibility measured by the Knight shift remains unchanged across the superconducting transition temperature T_c. With…

超导电性 · 物理学 2009-11-13 M. Nishiyama , Y. Inada , Guo-qing Zheng

The thermal conductivity, $\kappa$, of the heavy fermion superconductor UPt$_3$ was measured down to T$_c$/10. The absence of a linear term in the temperature dependence as T$\rightarrow$0 strongly suggests there are no zero energy…

凝聚态物理 · 物理学 2008-02-03 Benoit Lussier , Brett Ellman , Louis Taillefer

The novel spin-triplet superconductor candidate UTe2 was discovered only recently at the end of 2018 and attracted enormous attention. We review key experimental and theoretical progress which has been achieved in different laboratories.…

强关联电子 · 物理学 2022-04-18 D. Aoki , J. -P. Brison , J. Flouquet , K. Ishida , G. Knebel , Y. Tokunaga , Y. Yanase

We theoretically study superconductivity in UTe$_2$, which is a recently-discovered strong candidate for an odd-parity spin-triplet superconductor. Theoretical studies for this compound faced difficulty because first-principles calculations…

超导电性 · 物理学 2019-11-25 Jun Ishizuka , Shuntaro Sumita , Akito Daido , Youichi Yanase

We present the temperature dependence of the thermal conductivity kappa(T) of the unconventional superconductor Sr_2RuO_4 down to low temperatures (100 mK). In T -> 0 K limit we found a finite residual term in kappa/T, providing clear…

超导电性 · 物理学 2009-11-07 M. Suzuki , M. A. Tanatar , N. Kikugawa , Z. Q. Mao , Y. Maeno , T. Ishiguro

The thermal conductivity $\kappa$ of the iron-arsenide superconductor Ba$_{1-x}$K$_x$Fe$_2$As$_2$ ($T_c \simeq$ 30 K) was measured in single crystals at temperatures down to $T \simeq 50$ mK ($\simeq T_c$/600) and in magnetic fields up to…

The in-plane thermal conductivity $\kappa$ of electron-doped iron-arsenide superconductor BaFe$_{1.9}$Ni$_{0.1}$As$_2$ ($T_c$ = 20.3 K) single crystal was measured down to 70 mK. In zero field, the absence of a residual linear term…

超导电性 · 物理学 2015-05-13 L. Ding , J. K. Dong , S. Y. Zhou , T. Y. Guan , X. Qiu , C. Zhang , L. J. Li , X. Lin , G. H. Cao , Z. A. Xu , S. Y. Li