author = "Yang, H"

Found 1,697 documents, displaying page 88 of 170

## BCS-like Superconductivity in MgCNi3

Description : The low-temperature specific heat C(T,H) of a new superconductor MgCNi3 has been measured in detail. (C/gammasub_nTc=1.97 is estimated from the anomaly at Tc. At low temperatures, the electronic contribution in the superconducting state follows Ces/gammasub_nTc=7.96exp(-1.46Tc/T). The magnetic fie...
Repository : arXiv
Language(s) : Undetermined

## Photoemission spectra of Sr_2 RuO_4 and its relation to anisotropic transport

Description : This paper has been withdrawn by the authors. We are in the process of obtaining more data and will resubmit a modified manuscript in the near future. , Comment: 4 pages, 4 figures
Repository : arXiv
Language(s) : Undetermined

## Hole Doping Dependence of the Coherence Length in $La_{2-x}Sr_xCuO_4$ Thin Films

Description : By measuring the field and temperature dependence of magnetization on systematically doped $La_{2-x}Sr_xCuO_4$ thin films, the critical current density $j_c(0)$ and the collective pinning energy $U_p(0)$ are determined in single vortex creep regime. Together with the published data of superfluid d...
Repository : arXiv
Language(s) : Undetermined

## Bulk Evidence for s-Wave Pairing Symmetry in the n-Type Infinite-Layer Cuprate $Sr_{0.9}La_{0.1}CuO_{2}$

Description : Low temperature specific heat of the electron-doped (n-type) infinite-layer cuprate $Sr_{0.9}La_{0.1}CuO_{2}$ has been measured. The quasiparticle density of states (DOS) in the mixed state is found to be consistent with the feature of the s-wave pairing symmetry, agreeing very well with the earli...
Repository : arXiv
Language(s) : Undetermined

## Specific heat of unconventional superconductivity in NaxCoO2-yH2O

Description : Comprehensive studies of the low-temperature specific heat C(T,H) in NaxCoO2-yH2O are presented. At H=0, a very sharp anomaly was observed at T=4.7 K indicating the existence of bulk superconductivity. There exists the T^2 term in C(T,H=0) in the superconducting state manifesting the line nodal su...
Repository : arXiv
Language(s) : Undetermined

## X-ray absorption and optical spectroscopy studies of (Mg$_{1-x}$Al$_x$)B$_2$

Description : X-ray absorption spectroscopy and optical reflectance measurements have been carried out to elucidate the evolution of the electronic structure in (Mg$_{1-x}$Al$_{x}$)B$_{2}$ for $\emph{x}$ = 0.0,0.1, 0.2, 0.3, and 0.4. The important role of B 2$\emph{p}$ $\sigma$ hole states to superconductivity ...
Repository : arXiv
Language(s) : Undetermined

## Pressure effects on the Tc of superconducting MgCxNi3

Description : The effect of hydrostatic pressure (P) up to 17 kbar on the superconducting transition temperature (Tc) of the newly discovered intermetallic non-oxide perovskite superconductor MgCxNi3 has been reported. The TC is found to increase with increasing P at a rate of dTc/dP ~ 0.0134 to 0.0155 K/kbar d...
Repository : arXiv
Language(s) : Undetermined

## Tunneling spectroscopy of Na$_{x}$CoO$_2$ and Na$_{x}$CoO$_2$$\cdot yH_2O Description : The single electron tunneling spectroscopy on superconductor Na_{x}CoO_2$$\cdot$ yH$_2$O and its starting compound Na$_{x}$CoO$_2$ has been studied with point-contact method. The spectra of Na$_{x}$CoO$_2$ have two types of distinct shapes at different random locations, this is attributed to th...
Repository : arXiv
Language(s) : Undetermined

## Off-axis electron holography and microstructure of Ba0.5Sr0.5TiO3 thin film grown on LaAlO3

Description : Epitaxial Ba0.5Sr0.5TiO3 thin films grown on the (001) LaAlO3 substrates with the ferroelectric transition of about 250K have been investigated by TEM and off-axis electron holography. Cross-sectional TEM observations show that the 350nm-thick Ba0.5Sr0.5TiO3 film has a sharp interface with notable...
Repository : arXiv
Language(s) : Undetermined

## Magnetothermopower and Magnetoresistivity of RuSr2Gd1-xLaxCu2O8 (x=0, 0.1)

Description : We report measurements of magnetothermopower and magnetoresistivity as a function of temperature on RuSr2Gd1-xLaxCu2O8 (x = 0, 0.1). The normal-state thermopower shows a dramatic decrease after applying a magnetic field of 5 T, whereas the resistivity shows only a small change after applying the s...
Repository : arXiv
Language(s) : Undetermined

Found 1,697 documents, displaying page 88 of 170