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Mar 22, 2017
Superconductivity
Strongly Correlated Electrons

Effects of heavy-ion irradiation on FeSe

We report the effects of heavy-ion irradiation on FeSe single crystals by irradiating Uranium up to a dose equivalent matching field of $B_\phi$ = 16…
Dec 25, 2009
Superconductivity
Strongly Correlated Electrons

Doping Dependence of Spin Dynamics in Electron-Doped Ba(Fe1-xCox)2As2

The spin dynamics in single crystal, electron-doped Ba(Fe1-xCox)2As2 has been investigated by inelastic neutron scattering over the full range from u…
Oct 27, 2008
Strongly Correlated Electrons
Superconductivity

Anisotropic itinerant magnetism and spin fluctuations in BaFe2As2: A …

Neutron scattering measurements were performed to investigate magnetic excitations in a single-crystal sample of the ternary iron arsenide BaFe2As2, …
Aug 11, 2015
Strongly Correlated Electrons

Strange metal without magnetic criticality

A fundamental challenge to our current understanding of metals is the frequent observation of qualitative departures from Fermi liquid behavior. The …
Jun 11, 2013
Strongly Correlated Electrons

Interplay between Charge and Magnetic Ordering in YbPd

The pressure-temperature phase diagram of an intermediate-valence compound YbPd was revealed via simultaneous ac-calorimetry and electrical resistivi…
May 11, 2011
Strongly Correlated Electrons

Anisotropic heavy Fermi-liquid formation in the valence fluctuating …

$\alpha$-YbAlB$_4$ is the locally isostructural polymorph of $\beta$-YbAlB$_4$, the first example of an Yb-based heavy fermion superconductor which e…
Nov 01, 2007
Other Condensed Matter

Vortex Fluid State below an Onset Temperature T_0 of Solid 4He

Detailed studies of AC velocity Vac and temperature dependence of torsional oscillator responses of solid 4He are reported. A characteristic onset te…
Jul 27, 2012
Superconductivity
Materials Science
Strongly Correlated Electrons

Evidence for a cos(4\varphi) Modulation of the Superconducting Energy…

We study the superconducting(SC)-gap anisotropy of the \Gamma-centered hole Fermi surface in optimally doped FeTe_{0.6}Se_{0.4} (T_c = 14.5 K), using…
May 24, 2011
Superconductivity

Symmetry and Topology in Superconductors - Odd-frequency pairing and …

Superconductivity is a phenomenon where the macroscopic quantum coherence appears due to the pairing of electrons. This offers a fascinating arena to…
Mar 24, 2019
Strongly Correlated Electrons

Quantum critical behaviour and Lifshitz transition in intermediate …

Intermetallic compounds containing $f$-electron elements have been prototypical materials for investigating strong electron correlations and quantum …
Jun 21, 2018
Mesoscale and Nanoscale Physics

Spin triplet superconducting proximity effect in a ferromagnetic se…

Conventional spin-singlet superconductivity that deeply penetrates into ferromagnets is typically killed by the exchange interaction, which destroys …
Aug 16, 2018
Superconductivity
Strongly Correlated Electrons

Disorder-sensitive node-like small gap in FeSe

We investigate the band structure, nematic state and superconducting gap structure of two selected FeSe single crystals containing different amount o…
Oct 18, 2017
Superconductivity
Strongly Correlated Electrons

Symmetry-unprotected nodes or gap minima in $s_{++}$ state of FeSe …

We report the study on superconducting pairing mechanism of FeSe via the pair-breaking effects induced by H$^+$-irradiation combined with low-tempera…
Jul 24, 2018
Superconductivity
Strongly Correlated Electrons

Searching for gap zeros in Sr2RuO4 via field-angle-dependent specif…

The gap structure of Sr$_2$RuO$_4$, which is a longstanding candidate for a chiral $p$-wave superconductor, has been investigated from the perspectiv…
Feb 16, 2012
Soft Condensed Matter
Statistical Mechanics

Spatiotemporal heterogeneity of local free volumes in highly supercoo…

We discuss the spatiotemporal behavior of local density and its relation to dynamical heterogeneity in a highly supercooled liquid by using molecular…
Nov 16, 2013
Superconductivity
Strongly Correlated Electrons

Verification of Anisotropic s-Wave Superconducting Gap Structure in …

The field-angle-resolved specific heat C(T,H,phi) of the f-electron superconductor CeRu2 (Tc=6.3 K) has been measured at low temperatures down to 90 …
Dec 30, 2010
Statistical Mechanics
Mathematical Physics

Correlation Function and Simplified TBA Equations for XXZ Chain

The calculation of the correlation functions of Bethe ansatz solvable models is very difficult problem. Among these solvable models spin 1/2 XXX chai…
Mar 21, 2018
Mesoscale and Nanoscale Physics

Heat transport via a local two-state system near thermal equilibrium

Heat transport in spin-boson systems near the thermal equilibrium is systematically investigated. An asymptotically exact expression for the thermal …
Nov 21, 2018
Mesoscale and Nanoscale Physics

Surface plasmon polaritons in thin-film Weyl semimetals

Surface plasmon polaritons (SPPs) are electromagnetic waves that travel along a metal-insulator interface. Recently, new control methods of SPPs have…
Feb 18, 2019
Mesoscale and Nanoscale Physics

Evaluation of spin diffusion length and spin Hall angle of antiferr…

Antiferromagnetic Weyl semimetal Mn$_3$Sn has shown to generate strong intrinsic anomalous Hall effect (AHE) at room temperature, due to large moment…
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