Junctionless Cooper pair transistor

K. Yu. Arutyunov (Corresponding Author), J.S. Lehtinen

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

Quantum phase slip (QPS) is the topological singularity of the complex order parameter of a quasi-one-dimensional superconductor: momentary zeroing of the modulus and simultaneous 'slip' of the phase by ±2π. p. The QPS event(s) are the dynamic equivalent of tunneling through a conventional Josephson junction containing static in space and time weak link(s). Here we demonstrate the operation of a superconducting single electron transistor (Cooper pair transistor) without any tunnel junctions. Instead a pair of thin superconducting titanium wires in QPS regime was used. The current-voltage characteristics demonstrate the clear Coulomb blockade with magnitude of the Coulomb gap modulated by the gate potential. The Coulomb blockade disappears above the critical temperature, and at low temperatures can be suppressed by strong magnetic field.
Original languageEnglish
Pages (from-to)158-160
Number of pages3
JournalPhysica C: Superconductivity and its Applications
Volume533
DOIs
Publication statusPublished - 15 Feb 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Coulomb blockade
Transistors
slip
transistors
Single electron transistors
Tunnel junctions
Current voltage characteristics
Titanium
Superconducting materials
Wire
Magnetic fields
Temperature
single electron transistors
tunnel junctions
Josephson junctions
critical temperature
titanium
wire
electric potential
magnetic fields

Keywords

  • quasi-one-dimensional superconductivity
  • quantum phase slip
  • coulomb blockade

Cite this

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Junctionless Cooper pair transistor. / Arutyunov, K. Yu. (Corresponding Author); Lehtinen, J.S.

In: Physica C: Superconductivity and its Applications, Vol. 533, 15.02.2017, p. 158-160.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Lehtinen, J.S.

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