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Volumn 79, Issue 13, 2009, Pages

Comparative study of macroscopic quantum tunneling in Bi2 Sr2 CaCu2 Oy intrinsic Josephson junctions with different device structures

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EID: 65549106299     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.134505     Document Type: Article
Times cited : (43)

References (48)
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    • R. F. Voss and R. A. Webb, Phys. Rev. Lett. 47, 265 (1981). 10.1103/PhysRevLett.47.265
    • (1981) Phys. Rev. Lett. , vol.47 , pp. 265
    • Voss, R.F.1    Webb, R.A.2
  • 12
  • 13
    • 0008161311 scopus 로고
    • 10.1063/1.1656743
    • D. E. McCumber, J. Appl. Phys. 39, 3113 (1968). 10.1063/1.1656743
    • (1968) J. Appl. Phys. , vol.39 , pp. 3113
    • McCumber, D.E.1
  • 19
    • 65549133512 scopus 로고    scopus 로고
    • Regarding the S301 and S302 samples, we attempted to cut an IJJ stack into a trapezoidal shape in order to obtain IJJs with different critical currents at each junction. However, it was found that the angle between two slits shown in Fig. 1 was too small to obtain such junctions since the adjacent junctions were too close to each other on an atomic scale, while the lateral size is of the order of micrometers. Thus, the reduced switching currents for the first and the second switch in our samples are not related to the trapezoidal shape of the stack.
    • Regarding the S301 and S302 samples, we attempted to cut an IJJ stack into a trapezoidal shape in order to obtain IJJs with different critical currents at each junction. However, it was found that the angle between two slits shown in Fig. 1 was too small to obtain such junctions since the adjacent junctions were too close to each other on an atomic scale, while the lateral size is of the order of micrometers. Thus, the reduced switching currents for the first and the second switch in our samples are not related to the trapezoidal shape of the stack.
  • 24
    • 65549170175 scopus 로고    scopus 로고
    • In order to obtain the best fitting by using Eq. 5, the least-square fitting method was adopted for log [τ-1 (I)] using both Ic and Tesc as fitting parameters. We also used the same method for the second switch. The values of Ic and Ic 2nd, which were obtained at the lowest temperature, are listed in Table 1. The temperature variation of Ic and Ic 2nd was less than 2% for the measured samples, except for region (iii), as described in the text. The temperature dependence of Tesc for the first and the second switch is shown in Fig. 5.
    • In order to obtain the best fitting by using Eq. 5, the least-square fitting method was adopted for log [τ-1 (I)] using both Ic and Tesc as fitting parameters. We also used the same method for the second switch. The values of Ic and Ic 2nd, which were obtained at the lowest temperature, are listed in Table 1. The temperature variation of Ic and Ic 2nd was less than 2% for the measured samples, except for region (iii), as described in the text. The temperature dependence of Tesc for the first and the second switch is shown in Fig. 5.
  • 43
    • 0009105261 scopus 로고
    • 10.1103/PhysRevB.12.3667
    • W. H. Parker, Phys. Rev. B 12, 3667 (1975). 10.1103/PhysRevB.12.3667
    • (1975) Phys. Rev. B , vol.12 , pp. 3667
    • Parker, W.H.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.