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相关论文: Thermopower evolution in Yb(Rh$_{1-x}$Co$_x$)$_2$S…

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Pyrite FeS$_2$ has been investigated for a wide range of applications, including thermoelectrics due to previous observation of large thermopower at room-temperature. However, the values of thermopower reported in the literature is…

材料科学 · 物理学 2025-10-17 Anustup Mukherjee , Alaska Subedi

We use hard x-ray photoemission spectroscopy (HAXPES) to investigate the electronic structure of YbAl2, for which the Yb valence has not been consistently reported to date. The bulk sensitivity and the analytical simplicity provided by the…

We present high-resolution photoemission spectroscopy studies on the Kondo resonance of the strongly-correlated Ce system CeCu$_2$Si$_2$. Exploiting the thermal broadening of the Fermi edge we analyze position, spectral weight, and…

强关联电子 · 物理学 2009-11-07 F. Reinert , D. Ehm , S. Schmidt , G. Nicolay , S. H"ufner , J. Kroha , O. Trovarelli , C. Geibel

We report temperature dependent resistivity, specific heat, magnetic susceptibility and thermoelectric power measurements made on the heavy fermion system YbNi2B2C, for both as grown and annealed single crystals. Our results demonstrate a…

强关联电子 · 物理学 2009-11-07 M. A. Avila , S. L. Bud'ko , P. C. Canfield

A thermodynamic study of the Kondo insulator SmB$_6$ is pursued to elucidate the well-known anomalous low-temperature electronic-like specific heat contribution conjectured to arise from metallic surface states. A general thermodynamic…

强关联电子 · 物理学 2020-10-13 J. J. van den Broeke , S. N. Kempkes , A. Quelle , C. Morais Smith

In several superconductors above the superconducting transition temperature Tc, the electrical resistivity is of the form {\rho} =AT^2. We show that there exists an empirical relation between Tc and A when both vary with an external…

This paper reports thermopower and conductivity measurements through the metal-insulator transition for 2-dimensional electron gases in high mobility Si-MOSFETs. At low temperatures both thermopower and conductivity show critical behaviour…

强关联电子 · 物理学 2009-11-07 R. Fletcher , V. M. Pudalov , A. D. B. Radcliffe , C. Possanzini

We report electronic Raman scattering measurements of Sr(Fe$_{1-x}$Co$_x$)$_2$As$_2$ single crystals in their magnetic - Spin Density Wave (SDW) phase. The spectra display multiple, polarization-resolved SDW gaps as expected in a…

The temperature, field, and field-orientation dependences of the electronic specific heat Ce of the ironpnictide superconductor KFe2As2 have been investigated. Thermodynamic evidence of the presence of line nodes is obtained from the T and…

We investigate a modified Anderson model at the large-$N$ limit, where Coulomb interaction is replaced by Sachdev-Ye-Kitaev random interaction. The resistivity of conduction electron $\rho_{c}$ has a minimum value around temperature…

强关联电子 · 物理学 2019-05-10 Lan Zhang , Yin Zhong , Hong-Gang Luo

We report results of low-temperature thermodynamic and transport measurements of Pb_{1-x}Tl_{x}Te single crystals for Tl concentrations up to the solubility limit of approximately x = 1.5%. For all doped samples, we observe a…

强关联电子 · 物理学 2009-11-10 Y. Matsushita , H. Bluhm , T. H. Geballe , I. R. Fisher

We report on the first measurement of the Seebeck coefficient in a tunnel-contacted and gate-tunable individual single-quantum dot junction in the Kondo regime, fabricated using the electromigration technique. This fundamental…

介观与纳米尺度物理 · 物理学 2019-01-31 B. Dutta , D. Majidi , A. Garcia Corral , P. Erdman , S. Florens , T. Costi , H. Courtois , C. B. Winkelmann

We study the response of the thermopower of a quantum dot in the Kondo regime to sinusoidal displacement of the dot energy level via a gate voltage using time dependent non-crossing approximation and linear response Onsager relations.…

介观与纳米尺度物理 · 物理学 2015-06-12 Ali Goker , Elif Gedik

We calculate the in-plane Seebeck coefficient of Sr$_2$RuO$_4$ within a framework combining electronic structure and dynamical mean-field theory. We show that its temperature-dependence is consistent with entropic considerations embodied in…

强关联电子 · 物理学 2016-07-20 Jernej Mravlje , Antoine Georges

In view of the current interest in d_{x^{2}-y^{2}}+id_{xy} superconductors some of their thermodynamic properties have been studied to obtain relevant information for experimental verification. The temperature dependence of the specific…

超导电性 · 物理学 2009-10-31 Tulika Maitra

We report thermal transport measurement of KxFe2-ySe2 superconducting single crystal. Significant peak anomaly in thermal conductivity is observed at nearly TC/2 indicating a large phonon mean-free-path in the superconducting state. The…

超导电性 · 物理学 2015-05-27 Kefeng Wang , Hechang Lei , C. Petrovic

We report on the direct observation of the transmission phase shift through a Kondo correlated quantum dot by employing a new type of two-path interferometer. We observed a clear $\pi/2$-phase shift, which persists up to the Kondo…

介观与纳米尺度物理 · 物理学 2014-09-17 S. Takada , C. Bäuerle , M. Yamamoto , K. Watanabe , S. Hermelin , T. Meunier , A. Alex , A. Weichselbaum , J. von Delft , A. Ludwig , A. D. Wieck , S. Tarucha

We have measured the superconducting penetration depth~$\Lambda(T)$ in the heavy-fermion/intermediate-valent superconducting alloy series~Ce$_{1-x}$Yb$_x$CoIn$_5$ using transverse-field muon spin relaxation, to study the effect of…

We studied the phase diagram of Sr$_3$Ru$_2$O$_7$ by means of heat capacity and magnetocaloric effect measurements at temperatures as low as 0.06 K and fields up to 12 T. We confirm the presence of a new quantum critical point at 7.5 T…

强关联电子 · 物理学 2018-03-20 Dan Sun , Andreas Rost , Robin Perry , Andrew Mackenzie , Manuel Brando

Topological Kondo insulator SmB6 has attracted quite a lot of attentions from condensed matter physics community. A number of unique electronic properties, including low- temperature resistivity anomaly, 1D electronic transport and 2D Fermi…

材料科学 · 物理学 2016-07-07 Zengji Yue , Qinjun Chen , Xiaolin Wang