ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
권호 표지

Newly Observed Phase Coherent Electron Transport Properties in the Mesoscopic Loop Structure of Aluminum Wire

  • Published : 1994.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

We have identified two new features related to the coherent transport in the mesoscopic loop structure of aluminum wire, including the autocorrelation of the conductance fluctuations beyond $B_c$ and fine structure in the low-field magnetoresistance curve in the superconducting transition regime, which, to the best of our knowledge, have not been reported in the literature. Since the electrons in Al have a phase coherence length larger than $1\;{\mu}m$ at or below T = 3K, which is comparable to the dimensions of the structure, the wave nature of the electronic transport has been clearly observed: the universal conductance fluctuations, the Aharonov-Bohm oscillations, and the Altshuler-Aronov-Spivak oscillations. Due to the transition of Al to a superconducting state at T = 1.3 K, the coherent phenomena of Cooper pairs, i.e., the Little-Parks oscillations, have also been observed.

Keywords

References

  1. Mesoscopic Phenomena in Solids Altshuler, B.L.;Lee, P.A.;Webb, R.A.(eds.)
  2. Phys. Rev. v.B30 Magnetoresistance of small, quasi-one-dimensional, normal-metal rings and lines Umbach, C.P.;Washburn, S.;Laibowitz, R.B.;Webb, R.A.
  3. Phys. Rev. Lett. v.54 Observation of h/e Aharonov-Bohm oscillations in normal-metal rigns Webb, R.A.;Washburn, S.;Umbach, C.P.;Laibowitz, R.B.
  4. Appl. Phys. Lett. v.50 Nonlocal electrical properties in mesoscopic devices Umbach, C.P.;Santhanam, P.;Van Haesendonck, C.;Webb, R.A.
  5. Phys. Rev. Lett. v.65 Singleelectron charging and periodic conductance resonances in GaAs nanostructures Meirav, U.;Kastner, M.A.;Wind, S.J.
  6. Phys. Rev. v.B33 Flux sensitivity of a piecewise normal and superconducting metal loops Buttiker, M.;Klapwijk, T.M.
  7. Phys. Rev. Lett. v.70 Phase memory effects in mesoscopic rings with superconducting mirrors Petrashov, V.T.;Antonov, V.N.;Delsing, P.;Caleson, R.
  8. Phys. Rev. Lett. v.66 Resistance anomaly near the superconducting transition temperature in short aluminum wires Santhanam, P.;Chi, C.C.;Wind, S.J.;Brady, M.J.;Bucchignano, J.J.
  9. Phys. Rev. v.B44 Interfacial resistive anomaly at a normal-superconducting boundary Kwong, Y.K.;Lin, K.;Hakonen, P.J.;Isaacson, M.S.;Parpia, J.M.
  10. Physica v.B194-196 A resistance anomaly in a mesoscopic Al loop near the superconducting transition Kim, J.J.;Kim, J.;Shin, H.J.;Lee, H.J.;Lee, S.;Park, K.W.;Lee, E.H.
  11. Phys. Rev. v.B30 Quantum phase sensitivity to macroscopic boundaries: Al cylinders and wires Gordon, J.M.
  12. Phys. Rev. Lett. v.9 Observation of quantum periodicity in the transition temperature of a superconducting cylinder Little, W.A.;Parks, R.D.
  13. Phys. Rep. v.107 Weak localization in thin films a time-of-flight experiment with conduction electrons Bergmann, G.
  14. Phys. Rev. v.B30 Quantum oscillations in the superconducting fluctuation regime of cylindrical Al films Gijs, M.;Van Haesendonck, C.;Bruynseraede, Y.
  15. J. Physique v.47 Interference effects and magnetoresistance oscillation in normal-mental networks Doucot;Rammal
  16. Low Temperature Electrical Conduction in Strongly and Weakly Disordered Films Kim, Ju-Jin
  17. Phys. Rev. Lett. v.57 One-dimensional electron-electron scattering with small energy transfers Wind, S.;Rooks, M.J.;Chandrasekhar, V.;Prover, D.E.
  18. J. Phys. v.C15 Effects of electron-electron collisions with small energy transfers on quantum localization Altshuler, B.L.;Aronov, A.G.;Khmelnitskii, D.E.
  19. Phys. Rev. Lett. v.55 Universal conductance fluctuations in metals Lee, P.A.;Stone, A.D.
  20. Mesoscopic Phenomena in Solids Washburn, S.
  21. JETP Lett. v.42 no.12 Fluctuations in the extrinsic conductivity of disordered conductors Altshuler, B.L.
  22. Magnetoresistance in Metals Pippard, A.B.