Study of Tunneling Characteristics of Planar Junctions on YBaCuO Films
博士 === 國立清華大學 === 物理研究所 === 82 === Tunneling characteristics of planar tunneling junctions on Y1- xPrxBaCuO films are presented.The Y1-xPrxBaCuO films with x=0-0.45 were prepared by laser ablation on MgO(100) substrates Pb,Au,In or Al counter-electrode wa...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Online Access: | http://ndltd.ncl.edu.tw/handle/93393193427817879670 |
| Summary: | 博士 === 國立清華大學 === 物理研究所 === 82 === Tunneling characteristics of planar tunneling junctions on Y1-
xPrxBaCuO films are presented.The Y1-xPrxBaCuO films with
x=0-0.45 were prepared by laser ablation on MgO(100) substrates
Pb,Au,In or Al counter-electrode was deposited on top of native
barrier. The tunneling characteristics at various temperatures
were measured. The gap-like structures of YBCO as well as Pb
energy gap and phonon structures were observed in YBCO/Pb
junction at 4.2 K.Less pronounced structures were observed in
the case of YPBCO junctions. Junctions with In and Au counter-
electrodes have similar characteristics as that of Pb ,except
that Au junctions with small resistance develop an Andreev
reflection at zero bias. For YPBCO/Al junctions, a large
resistence peak around zero bias at low temperature was
observed.
|
|---|