Microwaves-induced oscillations in Andreev tunneling

Europhysics Letters

Volumn 47, Issue 5, 1999, Pages 615-620

  Vaknin, A ^a   Ovadyahu, Z ^a  

^a HEBREW UNIVERSITY OF JERUSALEM   (Israel)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0033181384     PISSN: 02955075     EISSN: None     Source Type: Journal    
DOI: 10.1209/epl/i1999-00433-3     Document Type: Article

References (13)

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4. COOK C. F. and EVERETT G. E., Phys. Rev., 159 (1967) 374; TELLER S. and KOFOED B. Solid State Commun., 8 (1970) 235.
5. FRYDMAN A. and OVADYAHU Z., Europhys. Lett., 33 (1996) 217.
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7. BEEAKKER C. W. J., Rev. Mod. Phys., 69 (1997) 731 and references therein.
8. BLONDER G. E., TINKHAM M. and KLAPWIJK T. M., Phys. Rev. B, 25 (1982) 4515.
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10. HAN S. et al., Phys. Rev. B, 32 (1985) 7567.
11. The oscillations observed in ref. [9] had a constant-period (ΔV was independent of bias). Moreover, ΔV was always bigger than ℏω/2e, which was ascribed to a parasitic series resistance. To account for our observation of ΔV < ℏω/2e would then require a V-dependent resistance, which is positive for small V and negative at higher bias. No support for such a feature is observed. In fact, in the normal state our junctions had a constant (±1%) dV/dI over the entire range of the bias used.
12. NEGUYEN V. I., SPIVAK B. Z. and SHKLOVSKII B. I., JETP Lett., 60 (1988) 1566.
13. Such a proximity-effect amounts to superconductivity being induced into a layer of extent ξ -the localization length of the Anderson insulator as has been predicted by TANAKA Y. and FUKUYAMA H., in Coherence in High Temperature Superconductors, edited by G. DEUTSCHER and A. REVCOLEVSCHI (World Scientific) 1996, pp. 393-413.