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The thermal conductivity $\kappa$ of the heavy-fermion superconductor CeIrIn$_5$ was measured as a function of temperature down to $T_c$/8, for current directions perpendicular ($J \parallel a$) and parallel ($J \parallel c$) to the…

Strongly Correlated Electrons · Physics 2008-02-04 H. Shakeripour , M. A. Tanatar , S. Y. Li , Louis Taillefer , C. Petrovic

We report for the first time the occurrence of superconductivity in the quaternary silicide carbide YRe2SiC with Tc = 5.9 K. The emergence of superconductivity was confirmed by means of magnetic susceptibility, electrical resistivity, and…

Superconducting properties of hypothetical simple hexagonal CaB2 are studied using the fully anisotropic Eliashberg formalism based on electronic and phononic structures and electron-phonon interactions which are obtained from ab initio…

Superconductivity · Physics 2009-09-17 Hyoung Joon Choi , Steven G. Louie , Marvin L. Cohen

We report a detailed analytic and numerical study of electronic thermal conductivity in d-wave superconductors. We compare theory of the cross over at low temperatures from T-dependence to T^3-dependence for increasing temperature with…

Superconductivity · Physics 2009-11-11 Tomas Lofwander , Mikael Fogelstrom

The two gaps in a two-band clean s-wave superconductor are evaluated self-consistently within the quasiclassical Eilenberger weak-coupling formalism with two in-band and one inter-band pairing potentials. Superfluid density, free energy and…

Superconductivity · Physics 2009-10-28 V. G. Kogan , C. Martin , R. Prozorov

The temperature dependence of the upper critical magnetic field (Hc2) in a BaFe1.84Co0.16As2 single crystal was determined via resistivity, for the inter-plane (H^ab) and in-plane (H//ab) directions in pulsed and static magnetic fields of…

Superconductivity · Physics 2015-05-13 M. Kano , Y. Kohama , D. Graf , F. F. Balakirev , A. S. Sefat , M. A. McGuire , B. C. Sales , D. Mandrus , S. W. Tozer

With infrared spectroscopy we studied the bulk electronic properties of the topological antiferromagnet MnBi$_2$Te$_4$ with $T_N \simeq 25~\mathrm{K}$. With the support of band structure calculations, we assign the intra- and interband…

We investigated the optical properties of single crystals of one-dimensional telluride Ta4SiTe4, which shows high thermoelectric performance below room temperature. Optical conductivity estimated from reflectivity spectra indicates the…

Heterostructures of layered transition metal dichalcogenide (TMD) exhibit rich physical properties by the combination of strong electronic correlation effects in 1T layer and superconductivity in 1H layer. But the limited number of bulk TMD…

Superconductivity · Physics 2025-09-11 Fanyu Meng , Hechang Lei

We investigate the effects of material anisotropy on the superheating field of layered superconductors. We provide an intuitive argument both for the existence of a superheating field, and its dependence on anisotropy, for $\kappa = \lambda…

Superconductivity · Physics 2016-10-14 Danilo B. Liarte , Mark K. Transtrum , James P. Sethna

The in-plane thermal conductivity $\kappa$ of the layered superconductor Cu$_x$TiSe$_2$ was measured down to temperatures as low as $T_c$/40, at $x$ = 0.06 near where the CDW order vanishes. The absence of a residual linear term at $ T \to…

Superconductivity · Physics 2007-09-10 S. Y. Li , Louis Taillefer , G. Wu , X. H. Chen

The mechanism of the peculiar transport properties around the magnetic ordering temperature of semiconducting antiferromagnetic EuCd$_2$P$_2$ is not yet understood. With a huge peak in the resistivity observed above the N\'eel temperature,…

The temperature dependent resistivity of Ba$_{1-x}$K$_x$Fe$_2$As$_2$ (x = 0.23, 0.25, 0.28 and 0.4) single crystals and the angle dependent resistivity of superconducting Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$ single crystals were measured in…

Superconductivity · Physics 2009-11-13 Zhao-Sheng Wang , Hui-Qian Luo , Cong Ren , Hai-Hu Wen

Ta2PdxS5 (x < 1.0) was found to show superconductivity at Tc ~ 6 K. The temperature dependent resistivity of single crystalline Ta2Pd0.92S5 showed that the system is strongly disordered due to Pd deficiencies and close to Anderson localized…

Superconductivity · Physics 2014-03-03 Y. F. Lu , T. Takayama , A. F. Bangura , Y. Katsura , D. Hashizume , H. Takagi

Specific heat, electrical resistivity, and magnetic susceptibility measurements on a high quality sample of Mg10Ir19B16 provide a self-consistent determination of its superconducting properties. They indicate that Mg10Ir19B16 is a type-II…

Superconductivity · Physics 2009-11-13 T. Klimczuk , F. Ronning , V. Sidorov , R. J. Cava , J. D. Thompson

Superconducting transition metal dichalcogenides emerged as a prime candidate for topological superconductivity. This work presents a detailed investigation of superconducting and transport properties on 2H-TaSeS single crystals using…

Superconductivity · Physics 2022-11-09 C. Patra , T. Agarwal , Rajeshwari R. Chaudhari , R. P. Singh

We report low-temperature specific heat measurements for high-quality single crystalline KFe2As2 (T_c about 3.5 K). The investigated zero-field specific heat data yields an unusually large nominal Sommerfeld coefficient gamma_n of 94(3)…

We theoretically determine the Ginzburg-Landau slopes of the anisotropic upper critical magnetic field in a quasi-one-dimensional superconductor and correct the previous works on this issue. By using the experimentally measured values of…

Superconductivity · Physics 2012-01-19 Andrei Lebed

Electrical resistivity, magnetic susceptibility, and specific heat measurements on single crystals of La$Tr_2$Al$_{20}$ with $Tr$ = Mo and W revealed that these compounds exhibit superconductivity with transition temperatures $T_c$ = 3.22…

Superconductivity · Physics 2020-09-30 Rumika Miyawaki , Naoki Nakamura , Ryuji Higashinaka , Tatsuma D. Matsuda , Yuji Aoki

The study of the anisotropic superconductor MgB2 using a combination of scanning tunneling microscopy and spectroscopy reveals two distinct energy gaps at Delta1=2.3 meV and Delta2=7.1 meV. Different spectral weights of the partial…

Superconductivity · Physics 2009-11-07 M. Iavarone , G. Karapetrov , A. E. Koshelev , W. K. Kwok , G. W. Crabtree , D. G. Hinks
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