Thermally excited tunneling from a metastable electronic state in a single-Cooper-pair transistor

Rees, D. G.; Glasson, P.; Simkins, L. R.; Collin, E.; Antonov, V.; Frayne, P. G.; Meeson, P. J.; Lea, M. J.
October 2008
Applied Physics Letters;10/27/2008, Vol. 93 Issue 17, p173508
Academic Journal
Metastable electron traps and two-level systems (TLSs) are common in solid-state devices and lead to background charge movement and charge noise in single-electron and single-Cooper-pair transistors. We present measurements of the real-time capture and escape of individual electrons in metastable trapped states at very low temperatures, leading to charge offsets close to 1e. The charge movement exhibits thermal excitation to a hysteretic tunneling transition. The temperature dependence and hysteresis can be explained by the coupling of a TLS to a quasiparticle trap.


Related Articles

  • BCS-BEC crossover and nodal-points contribution in p-wave resonance superfluids. Kagan, M. Yu.; Efremov, D. V. // Low Temperature Physics;Aug2009, Vol. 35 Issue 8/9, p610 

    We solve the Leggett equations for BCS-BEC crossover of the resonance p-wave superfluid. We calculate sound velocity, specific heat and the normal density for the BCS domain (μ>0), the BEC domain (μ<0), and for the interesting interpolation point (μ=0) in the 100%-polarized A1 phase in...

  • Efficient electronic cooling in heavily doped silicon by quasiparticle tunneling. Savin, A. M.; Prunnila, M.; Kivinen, P. P.; Pekola, J. P.; Ahopelto, J.; Manninen, A. J. // Applied Physics Letters;9/3/2001, Vol. 79 Issue 10 

    Cooling of electrons in a heavily doped silicon by quasiparticle tunneling using a superconductor–semiconductor–superconductor double-Schottky-junction structure is demonstrated at low temperatures. In this work, we use Al as the superconductor and thin silicon-on-insulator (SOI)...

  • Time dependence of tunnel statistics and the energy resolution of superconducting tunnel junctions. Verhoeve, P.; Hartog, R. den; Kozorezov, A.; Martin, D.; van Dordrecht, A.; Wigmore, J. K.; Peacock, A. // Journal of Applied Physics;11/15/2002, Vol. 92 Issue 10, p6072 

    Multiple tunneling of quasiparticle charge carriers in a superconducting tunnel junction (STJ) enhances the signal generated by a photon absorption event. It is also an additional source of noise, responsible for a substantial degradation of the energy resolution. Although tunneling is a...

  • Inelastic quasiparticle scattering and multiplication in superconductors. Burnell, G.; Warburton, P. A.; Blamire, M. G. // Journal of Applied Physics;7/15/1994, Vol. 76 Issue 2, p1105 

    Discusses a study of quasiparticle multiplication in superconductors. Details of the experiment; Stages of quasiparticle transmission; Equation for the tunneling flows of quasiparticles at any given energy for a particular junction bias.

  • Spin tunneling in Co/Au/I/BiSrCaCuO tunnel junctions. Ishibashi, Takayuki; Sato, Kazushige; Yonemitsu, Koutarou; Sato, Katsuaki // Journal of Applied Physics;6/1/2001, Vol. 89 Issue 11, p7672 

    Conductance spectra of Co/Au/I/Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub x+8](BSCCO) tunnel junctions have been measured to investigate the tunneling of spin polarized quasiparticles. BSCCO thin films prepared by molecular beam epitaxy are used for the Co/Au/I/BSCCO tunnel junctions because those have...

  • Energy-resolving superconducting x-ray detectors with charge amplification due to multiple.... Mears, C.A.; Labov, Simon E.; Barfknecht, A.T. // Applied Physics Letters;11/22/1993, Vol. 63 Issue 21, p2961 

    Presents a superconducting x-ray detector with charge amplification due to multiple quasiparticle tunneling. Use of coupled superconducting tunnel junctions and absorbers; Proportionality of quasiparticles to the incident particle energy; Features and characteristics of the device.

  • Low temperature tunneling dynamics in condensed media. Parris, Paul E.; Silbey, Robert // Journal of Chemical Physics;12/1/1985, Vol. 83 Issue 11, p5619 

    There has been considerable interest recently in the low temperature dynamics of condensed phase tunneling phenomena. In this paper we consider the interplay between quasiparticle transport and vibrational relaxation; the former taking place via tunneling in a double well potential, and the...

  • Proof of concept of the quantum capacitance detector. Bueno, J.; Shaw, M. D.; Day, P. K.; Echternach, P. M. // Applied Physics Letters;3/8/2010, Vol. 96 Issue 10, p103503 

    We fabricated and tested a proof-of-concept quantum capacitance detector, a superconducting radiation detector described in a recent publication [Shaw et al., Phys. Rev. B 79, 144511 (2009)]. In this concept, quasiparticle tunneling in a single Cooper-pair box is used to measure the density of...

  • Multiple-tunneling noise in superconducting tunnel junctions from partial current integration. Hiller, L. J.; van den Berg, M. L.; Labov, S. E. // Applied Physics Letters;12/24/2001, Vol. 79 Issue 26, p4441 

    Superconducting tunnel junctions can be used as high-resolution particle or photon energy spectrometers. A photon absorbed in a superconductor breaks Cooper pairs into quasiparticles. These quasiparticles tunnel through the junction barrier and are detected as a pulse of excess current. Many...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics