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Superconducting sct in a tunable dissipative environment (1999).
| Content Provider | CiteSeerX |
|---|---|
| Author | Wilhelm, Frank K. Schön, Gerd Zimanyi, Gergely T. |
| Abstract | We investigate a superconducting single-charge transistor, which is capacitively coupled to an ohmic 2-dimensional electron gas, whose resistivity can be controlled by a back gate and introduces an ohmic dissipative term for its dynamics. We show, how the coherence between the single tunneling events is destroyed by these fluctuations. We find various different regimes of the system conductance G depending on the environment. Keywords: Coulomb blockade; Superconductivity; Dissipation Motivated by the experiments of the Berkeley group [1] we consider a single-charge transistor with superconducting island and electrodes which are coupled capacitively to a 2DEG (Fig. 1). The novelty of this setup is that the the square resistance of the 2DEG is widely tunable by a back gate. This dissipative environment is responsible for the linear conductance of the superconducting device, observed in the experiments. Following experiments [1], we will work with low environment resistance R 2DEG RK j... |
| File Format | |
| Publisher Date | 1999-01-01 |
| Access Restriction | Open |
| Subject Keyword | Tunable Dissipative Environment Back Gate Single-charge Transistor Superconducting Device Berkeley Group Dissipative Environment Various Different Regime Low Environment Resistance Square Resistance Dissipation Motivated Ohmic 2-dimensional Electron Gas System Conductance Ohmic Dissipative Term Single Tunneling Event Linear Conductance |
| Content Type | Text |
