| Title | 4e-condensation in a fully frustrated Josephson junction diamond chain |
| Publication Type | Journal Article |
| Year of Publication | 2006 |
| Authors | Rizzi, M, Cataudella, V, Fazio, R |
| Journal | Phys. Rev. B 73 (2006) 100502(R) |
| Abstract | Fully frustrated one-dimensional diamond Josephson chains have been shown [B. Dou\\\\c{c}ot and J. Vidal, Phys. Rev. Lett. {\\\\bf 88}, 227005 (2002)] to posses a remarkable property: The superfluid phase occurs through the condensation of pairs of Cooper pairs. By means of Monte Carlo simulations we analyze quantitatively the Insulator to $4e$-Superfluid transition. We determine the location of the critical point and discuss the behaviour of the phase-phase correlators. For comparison we also present the case of a diamond chain at zero and 1/3 frustration where the standard $2e$-condensation is observed. |
| URL | http://hdl.handle.net/1963/2400 |
| DOI | 10.1103/PhysRevB.73.100502 |
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