Bound fluxon pair in one-dimensional SQUID array
| Autor: | Takaya Nakajo, Munehiro Nishida, Takafumi Kanayama, Noriyuki Hatakenaka, Toshiyuki Fujii |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Physics
Josephson effect Superconductivity Fluxon Condensed matter physics Oscillation Double sine-Gordon equation Energy Engineering and Power Technology sine-Gordon equation Dissipation Condensed Matter Physics SQUID Electronic Optical and Magnetic Materials law.invention law Quantum mechanics Condensed Matter::Superconductivity Bound state Electrical and Electronic Engineering |
| Popis: | We propose a one-dimensional array of superconducting quantum interference devices (SQUIDs) composed of three asymmetrically positioned Josephson junctions to realize a discrete double sine-Gordon (DSG) model. Two fluxons in this SQUID array attract each other and form bound states with internal oscillation modes. We conduct numerical simulations of a discrete DSG equation, and show that the period of the internal oscillation of a moving fluxon pair exhibits relativistic time dilation except near the speed of light. We also show that driving with a pure alternating current causes progressive motion of the bound fluxon pair even in the presence of dissipation. |
| Databáze: | OpenAIRE |
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