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物理学报. 2001, 50(9): 1779-1782.
doi: 10.7498/aps.50.1779.
铁磁-d波超导结中的粗糙界面散射和自旋反转效应对隧道谱的影响
- 收稿日期: 2001-02-16
- 修回日期: 2001-03-20
- 刊出日期: 2001-09-20
English Abstract
EFFECTS OF INTERFACE ROUGHNESS AND SPIN-FLIP ON TUNNELSPECTRUM IN FERROMAGNET-d-WAVE SUPERCONDUCTOR JUNCTIONS
- Received Date:
16 February 2001
- Accepted Date:
20 March 2001
- Published Online:
20 September 2001
Abstract: Taking into account the spin-polarized effect,rough interface scattering and spin-flip effects,we calculate,within Blonder-Tinkham-Klapwijk Scattering formalism,the spin-polarized tunnel spectrum in the ferromagnet-d-wave superconductor junctions.It is shown that,(1) the conductance exhibits a sharp peak at zero-bias with the increase in spin-flip scattering;(2) the interface roughness can induce a small central peak in the zero-bias conductance dip and decrease the height of the zero-bias conductance peak.The calculated results can account for the tunnel spectrum observed experimentally in La2/3Ba1/3 MnO3/DyBa2Cu3O7 and La2/3 Ba1/3 MnO3/YBa2Cu3O7-δ junctions.
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