Quantum ratchet effect for vortices.

We have measured a quantum ratchet effect for vortices moving in a quasi-one-dimensional Josephson junction array. In this solid-state device the shape of the vortex potential energy, and consequently the band structure, can be accurately designed. This band structure determines the presence or absence of the quantum ratchet effect. In particular, asymmetric structures possessing only one band below the barrier do not exhibit current rectification at low temperatures and bias currents. The quantum nature of transport is also revealed in a universal/nonuniversal power-law dependence of the measured voltage-current characteristics for samples without/with rectification.

• Publication year

  2003

• Venue

  Physical Review Letters

• Publication date

  2003-01-07

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevLett.90.056802arXiv cond-mat/0301073PMID 12633384
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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