Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous Glass
Electrical resistance of indium in 7 nm-pore glass has been studied in the temperature 2.3-300 K interval. It was found that material under study undergoes the transition into the superconducting state at TC = 3.9 K. A sharp asymmetric R(T) maximum was found at temperature of 6.4 K. The R(T) depende...
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Sumy State University
2015-06-01
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| Series: | Журнал нано- та електронної фізики |
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| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2015/2/articles/Paper-JoMN_Від_Береснев_final.pdf |
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| _version_ | 1849700679429390336 |
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| author | O.N. Ivanov I.V. Sudzhanskaya |
| author_facet | O.N. Ivanov I.V. Sudzhanskaya |
| author_sort | O.N. Ivanov |
| collection | DOAJ |
| description | Electrical resistance of indium in 7 nm-pore glass has been studied in the temperature 2.3-300 K interval. It was found that material under study undergoes the transition into the superconducting state at TC = 3.9 K. A sharp asymmetric R(T) maximum was found at temperature of 6.4 K. The R(T) dependence has been for the first time analyzed for the normal phase. It was found that the temperature dependence of the resistance in the temperature 15-80 K interval can be described by tunnelling mechanism of the charge carriers in the frames of the Sheng’s model. Material under study can be considered as electrically inhomogeneous material in which metallic domains in pores are contacting each other via dielectric bridges of glass matrix. A charge transfer between the metallic domains can be realized by the electron tunneling through the potential barriers corresponding to the dielectric bridges. |
| format | Article |
| id | doaj-art-5cf7cb0ba5f44d9dba5dbb7697e2e918 |
| institution | DOAJ |
| issn | 2077-6772 |
| language | English |
| publishDate | 2015-06-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал нано- та електронної фізики |
| spelling | doaj-art-5cf7cb0ba5f44d9dba5dbb7697e2e9182025-08-20T03:18:12ZengSumy State UniversityЖурнал нано- та електронної фізики2077-67722015-06-017202044-102044-4Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous GlassO.N. Ivanov0I.V. Sudzhanskaya1Belgorod State University, 85, Pobedy Str., 308015 Belgorod, RussiaBelgorod State University, 85, Pobedy Str., 308015 Belgorod, RussiaElectrical resistance of indium in 7 nm-pore glass has been studied in the temperature 2.3-300 K interval. It was found that material under study undergoes the transition into the superconducting state at TC = 3.9 K. A sharp asymmetric R(T) maximum was found at temperature of 6.4 K. The R(T) dependence has been for the first time analyzed for the normal phase. It was found that the temperature dependence of the resistance in the temperature 15-80 K interval can be described by tunnelling mechanism of the charge carriers in the frames of the Sheng’s model. Material under study can be considered as electrically inhomogeneous material in which metallic domains in pores are contacting each other via dielectric bridges of glass matrix. A charge transfer between the metallic domains can be realized by the electron tunneling through the potential barriers corresponding to the dielectric bridges.http://jnep.sumdu.edu.ua/download/numbers/2015/2/articles/Paper-JoMN_Від_Береснев_final.pdfPorous glassIndiumSuperconducting transitionTunneling conductivit |
| spellingShingle | O.N. Ivanov I.V. Sudzhanskaya Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous Glass Журнал нано- та електронної фізики Porous glass Indium Superconducting transition Tunneling conductivit |
| title | Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous Glass |
| title_full | Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous Glass |
| title_fullStr | Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous Glass |
| title_full_unstemmed | Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous Glass |
| title_short | Tunneling Conductivity in the Normal Phase of Superconducting Indium in Porous Glass |
| title_sort | tunneling conductivity in the normal phase of superconducting indium in porous glass |
| topic | Porous glass Indium Superconducting transition Tunneling conductivit |
| url | http://jnep.sumdu.edu.ua/download/numbers/2015/2/articles/Paper-JoMN_Від_Береснев_final.pdf |
| work_keys_str_mv | AT onivanov tunnelingconductivityinthenormalphaseofsuperconductingindiuminporousglass AT ivsudzhanskaya tunnelingconductivityinthenormalphaseofsuperconductingindiuminporousglass |