JOURNAL OF LOW TEMPERATURE PHYSICS

Vol. 174 Nos. 3/4 February 2014

CONTENTS

Articles

Effect of Preform Compaction Pressure on the Final Microstructures and Superconducting
Properties of YBa₂Cu₃O_7−δ Superconductors Fabricated by Directionally Solidified
Preform Optimized Infiltration Growth Process....................................................................................113
   N. Devendra Kumar, P. Missak Swarup Raju, S. Pavan Kumar Naik,
   T. Rajasekharan, V. Seshubai

Improving the Thermoelectric Properties of Sr_0.9La_0.1TiO₃by Ag Addition.......................................128
   G.H. Zheng, Z.X. Dai, H.B. Li, H.Q. Wang, Y.Q. Li, X.F. Xu   B.T. Huang, Y.Q. Ma and G. Li

Effect of Ce Substitution on the Magnetoresistivity and Flux Pinning Energy of the
Bi₂Sr₂Ca_1−xCe_xCu₂O_8+δSuperconductors...........................................................................................136
   B. Oezcelik, C. Kaya, H. Gündogmus, A. Sotelo, M.A. Madre

Switching of Current Spin Polarization by Electron-Phonon Interaction in a Quantum Dot Device...148
Yu Guo, Jun Zheng, Feng Chi

Resummation of Infrared Divergencies in the Theory of Atomic Bose Gases......................................159
H.T.C. Stoof, J.J.R.M. van Heugten

Two Fluid Description of Two Band Superconductors.........................................................................184
Nikolaj Bittner, Dietrich Einzel

Effect of Short-Range Ferromagnetic Ordering on the Electrical Transport Properties of
(La0.9Bi0.1)2/3Ca1/3MnO3 in the Magnetic Field up to 40T..............................................................207
   Yuying Wu, Zhengcai Xia, Gufei Zhang, Johan Vanacken

Effect of Long Aging on the Resistivity Properties of Aluminum Doped YBa₂Cu_3−yAl_yO_7−δ
Single Crystals with a Given Twin Boundary Topology.......................................................................214
    R.V. Vovk, N.R. Vovk, I.L. Goulatis, A. Chroneos

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Journal of Low Temperature Physics