NDLI: Quantum phase transitions and particle-hole pair transport in capacitively coupled josephson-junction chains (1998).

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Quantum phase transitions and particle-hole pair transport in capacitively coupled josephson-junction chains (1998).

Content Provider	CiteSeerX
Author	Choi, Mahn-Soo Choi, M. Y. Lee, Sung-Ik
Abstract	We consider two chains of ultrasmall Josephson junctions, coupled capacitively with each other, and investigate the transport of particle-hole pairs and the quantum phase transitions at zero temperature. For appropriate parameter ranges, the particle-hole pairs are found to play major roles in transport phenomena; condensation of such pairs leads to the superconducting state, displaying perfect drag of supercurrents along the two chains. PACS Numbers: 74.50.+r, 67.40.Db, 73.23.Hk Typeset using REVTEXBoth the system of small metallic tunnel junctions and that of small Josephson junctions display the remarkable effects of Coulomb blockade, raising the possibility of single charge (electron or Cooper pair) tunneling [1,2]. In particular, recent theoretical predictions [3] and experimental demonstrations [4,5] with two capacitively coupled one-dimensional (1D) arrays (i.e., chains) of submicron metallic tunnel junctions has revealed another fascinating role of the Coulomb interaction: The current fed through either of the chains induces a secondary current in the other chain. The primary and secondary currents are comparable
File Format	PDF
Publisher Date	1998-01-01
Access Restriction	Open
Subject Keyword	Quantum Phase Transition Particle-hole Pair Transport Josephson-junction Chain Particle-hole Pair Fascinating Role Coulomb Interaction Appropriate Parameter Ultrasmall Josephson Junction Transport Phenomenon Secondary Current Remarkable Effect Submicron Metallic Tunnel Junction Current Fed Major Role Recent Theoretical Prediction Cooper Pair Hk Typeset Experimental Demonstration Small Metallic Tunnel Junction Small Josephson Junction Coulomb Blockade Pac Number Perfect Drag Single Charge
Content Type	Text

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