Results
author = "Yang, H"
BCS-like Superconductivity in MgCNi3
Author(s) :
Lin, J. -Y.
,
Ho, P. L.
,
Huang, H. L.
,
Lin, P. H.
,
Zhang, Y. -L.
,
Yu, R. -C.
,
Jin, C. -Q.
,
Yang, H. D.
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
Author(s) :
Wang, S. -C.
,
Yang, H. -B.
,
Kaminski, A.
,
Sato, T.
,
Takahashi, T.
,
Maeno, Y.
,
Engelbrecht, J. R.
,
Dai, X.
,
Wang, Z.
,
Ding, H.
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This paper has been withdrawn by the authors.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
Author(s) :
Wen, H. H.
,
Yang, H. P.
,
Li, S. L.
,
Zeng, X. H.
,
Soukiassian, A. A.
,
Si, W. D.
,
Xi, X. X.
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 $Sr_{0.9}La_{0.1}CuO_{2}$
Author(s) :
Liu, Z. Y.
,
Wen, H. H.
,
Shan, L.
,
Yang, H. P.
,
Lu, X. F.
,
Gao, H.
,
Park, Min-Seok
,
Jung, C. U.
,
Lee, Sung-Ik
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
Author(s) :
Yang, H. D.
,
Lin, J. -Y.
,
Sun, C. P.
,
Kang, Y. C.
,
Takada, K.
,
Sasaki, T.
,
Sakurai, H.
,
Takayama-Muromachi, E.
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$_2$
Author(s) :
Yang, H. D.
,
Liu, H. L.
,
Lin, J. -Y.
,
Kuo, M. X.
,
Ho, P. L.
,
Chen, J. M.
,
Jung, C. U.
,
Park, Min-Seok
,
Lee, Sung-Ik
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
Author(s) :
Yang, H. D.
,
Mollah, S.
,
Huang, W. L.
,
Ho, P. L.
,
Huang, H. L.
,
Liu, C. -J.
,
Lin, J. -Y.
,
Zhang, Y. -L.
,
Yu, R. -C.
,
Jin, C. -Q.
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$$\cdot$ yH$_2$O
Author(s) :
Shan, L.
,
Gao, H.
,
Shi, Y. G.
,
Yang, H. P.
,
Lu, X. F.
,
Cao, G. H.
,
Xu, Z. A.
,
Wen, H. H.
Description :
The single electron tunneling spectroscopy on superconductor
Na$_{x}$CoO$_2$$\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
Author(s) :
Tian, H. F.
,
Yu, H. C.
,
Zhu, X. H.
,
Wang, Y. G.
,
Zheng, D. N.
,
Yang, H. X.
,
Li, J. Q.
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)
Author(s) :
Liu, C. -J.
,
Sheu, C. -S.
,
Wu, T. -W.
,
Huang, L. -C.
,
Hsu, F. H.
,
Yang, H. D.
,
Williams, G. V. M.
,
Liu, Chia-Jung C.
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