Abstract
We report the first direct measurements on the transient response of a nonequilibrium superconductor to high tunnel-current pulses. The sample is a Sn-I-Sn-I-Sn double-tunnel junction and the observed transient time is 20–30 nsec, depending on the samples. The calculated results based on the nonlinear Rothwarf-Taylor equation give a good fit to the experimental data for a reasonable set of parameter values. For injection strong enough to drive a film into the inhomogeneous gap state, the contribution of the negative diffusive term becomes important, suggesting the occurrence of an effective abnormal diffusion of quasiparticles. Measurements are also performed for the transient detectorI-V characteristics at a certain sampling-gate delay time. It is shown that the inhomogeneous gap state is formed within a few tens of nanoseconds for bath temperatures both below and above Tλ.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D. N. Langenberg,Low Temperature Physics—LT14, M. Krusius and M. Vuorio, eds. (North-Holland, Amsterdam, 1975), Vol. 5, p. 223.
A. G. Aronov and B. Z. Spivak,Fiz. Nizk. Temp. 4, 1365 (1978) [Sov. J. Low Temp. Phys. 4, 641 (1979)].
G. Schön,Low Temperature Physics—LT16, W. G. Clark, ed. (North-Holland, Amsterdam, 1981), Vol. 3, p. 1677.
L. R. Testardi,Phys. Rev. B 4, 2189 (1971).
G. A. Sai-Halasz, C. C. Chi, A. Denenstein, and D. N. Langenberg,Phys. Rev. Lett. 33, 215 (1974).
P. Hu, R. C. Dynes and V. Narayanamurti,Phys. Rev. B 10, 2786 (1974).
A. I. Golovashkin, K. V. Mitsen, and G. P. Motulevich,Zh. Eksp. Teor. Fiz. 68, 1408 (1975) [Sov. Phys. JETP 41, 701 (1976)].
C. C. Chi, M. T. Loy, and D. C. Cronemeyer,Phys. Rev. B 23, 124 (1981).
R. Sobolewski, C. V. Stancampiano, G. Mourou, and D. Butler, preprint.
P. W. Epperlein, K. Lassmann, and W. Eisenmenger,J. Phys. (Paris)39, C6–515 (1978).
R. C. Dynes, V. Narayanamurti, and J. P. Garno,Phys. Rev. Lett. 39, 229 (1977).
K. E. Gray and H. W. Willemsen,J. Low Temp. Phys. 31, 911 (1978).
J. T. C. Yeh and D. N. Langenberg,Phys. Rev. B 17, 4303 (1978).
I. Iguchi, private communication.
G. Schön and A. Tremblay,Phys. Rev. Lett. 42, 1086 (1979).
I. Iguchi and D. N. Langenberg,Phys. Rev. Lett. 44, 486 (1980).
I. Iguchi, D. Kent, H. Gilmartin, and D. N. Langenberg,Phys. Rev. B 23, 3240 (1981).
H. Akoh and K. Kajimura,Solid State Commun. 38, 1147 (1981).
H. Akoh and J.K. Kajimura,Phys. Rev. B 25, 4467 (1982).
I. Iguchi, S. Kotani, Y. Yamaki, Y. Suzuki, M. Manabe, and K. Harada,Phys. Rev. B 24, 1193 (1981).
S. Kotani, Y. Yamaki, and I. Iguchi,Physica 107B + C, 535 (1981).
S. Kotani and I. Iguchi,Phys. Rev. B 26, 1453 (1982).
C.-D. Wei, X.-L. Luo, and X.-F. Meng,Physica 107B + C, 539 (1981).
S. Kotani, Y. Suzuki, and I. Iguchi,Phys. Rev. Lett. 49, 391 (1982).
A. Rothwarf and B. N. Taylor,Phys. Rev. Lett. 19, 27 (1967).
J. J. Chang and D. J. Scalapino,Phys. Rev. B 15, 2651 (1977).
S. B. Kaplan, C. C. Chi, D. N. Langenberg, J. J. Chang, S. Jafarey, and D. J. Scalapino,Phys. Rev. B 14, 4854 (1976).
D. J. Scalapino and B. A. Huberman,Phys. Rev. Lett. 39, 1365 (1977).
H. Konno,Prog. Theor. Phys.,69, 674 (1983).
I. Schuller and K. E. Gray,Phys. Rev. Lett. 36, 429 (1976).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Iguchi, I., Nishiura, A. Transient response of a nonequilibrium superconductor to pulsed injection of quasiparticles through a tunnel barrier. J Low Temp Phys 52, 271–287 (1983). https://doi.org/10.1007/BF00682250
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00682250