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Feiguin AE, White SR, Scalapino DJ, et al. Pairing symmetry and Josephson current in doped 2-leg t-J ladders. Phys Rev Lett. 2008;101(21):217001doi: 10.1103/PhysRevLett.101.217001.
Feiguin, A. E., White, S. R., Scalapino, D. J., & Affleck, I. (2008). Pairing symmetry and Josephson current in doped 2-leg t-J ladders. Physical review letters, 101(21), 217001. https://doi.org/10.1103/PhysRevLett.101.217001
Feiguin, A E, et al. "Pairing symmetry and Josephson current in doped 2-leg t-J ladders." Physical review letters vol. 101,21 (2008): 217001. doi: https://doi.org/10.1103/PhysRevLett.101.217001
Feiguin AE, White SR, Scalapino DJ, Affleck I. Pairing symmetry and Josephson current in doped 2-leg t-J ladders. Phys Rev Lett. 2008 Nov 21;101(21):217001. doi: 10.1103/PhysRevLett.101.217001. Epub 2008 Nov 17. PMID: 19113444.
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Phys Rev Lett. 2008 Nov 21;101(21):217001. doi: 10.1103/PhysRevLett.101.217001. Epub 2008 Nov 17.

Pairing symmetry and Josephson current in doped 2-leg t-J ladders.

Physical review letters

A E Feiguin, S R White, D J Scalapino, I Affleck

Affiliations

  1. University of California, Santa Barbara, California 93106, USA.

PMID: 19113444 DOI: 10.1103/PhysRevLett.101.217001

Abstract

We perform the numerical equivalent of a phase sensitive experiment on doped 2-leg t-J ladders. We apply proximity effect fields with different complex phases at both ends of an open system and we study the transport of Cooper pairs. Measuring the response of the system and the induced Josephson current, density matrix renormalization group calculations show how, depending on the doping fraction, the rung-leg parity of the pair field changes from minus to plus as the density of holes is increased. The Josephson current exhibits a phase transition as a function of J/t.

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