TY - JOUR
T1 - Singlet pairing and superconductivity in t-J ladders with Mott insulating stripes
AU - Cheng, Chen
AU - Mondaini, Rubem
AU - Rigol, Marcos
N1 - Funding Information:
M.R. is grateful to A. Muramatsu, R. T. Scalettar, and R. R. P. Singh for motivating discussions, and to S. A. Kivelson, M. M. Maska, and A. Tsvelik for bringing to our attention relevant references. We acknowledge support from NSAF Grant No. U1530401 (C.C. and R.M.), NSFC Grants No. 11674021 (C.C. and R.M.), and No. 11650110441 (R.M.), and NSF Grant No. PHY-1707482 (M.R.). The computations were performed in the Tianhe-2JK at the Beijing Computational Science Research Center (CSRC).
Funding Information:
Acknowledgments. M.R. is grateful to A. Muramatsu, R. T. Scalettar, and R. R. P. Singh for motivating discussions, and to S. A. Kivelson, M. M. Maska, and A. Tsvelik for bringing to our attention relevant references. We acknowledge support from NSAF Grant No. U1530401 (C.C. and R.M.), NSFC Grants No. 11674021 (C.C. and R.M.), and No. 11650110441 (R.M.), and NSF Grant No. PHY-1707482 (M.R.). The computations were performed in the Tianhe-2JK at the Beijing Computational Science Research Center (CSRC).
Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/9/27
Y1 - 2018/9/27
N2 - Pairing in superconductors occurs in a variety of channels and can be produced by various mechanisms. Here, we show that, in the presence of strong correlations, a singlet-pair superconducting phase can occur in ladder geometries with the fermions in the pairs residing on different sides of a Mott insulating stripe. The antiferromagnet correlations in the Mott stripe provide the pairing "glue" in such a phase. We study, using the density matrix renormalization group method, the ground state of four-leg t-J ladders with Mott insulating stripes in the inner two legs. Pairing and superconductivity are revealed by the presence of negative binding energies and by algebraically decaying interleg singlet-pair correlations, respectively.
AB - Pairing in superconductors occurs in a variety of channels and can be produced by various mechanisms. Here, we show that, in the presence of strong correlations, a singlet-pair superconducting phase can occur in ladder geometries with the fermions in the pairs residing on different sides of a Mott insulating stripe. The antiferromagnet correlations in the Mott stripe provide the pairing "glue" in such a phase. We study, using the density matrix renormalization group method, the ground state of four-leg t-J ladders with Mott insulating stripes in the inner two legs. Pairing and superconductivity are revealed by the presence of negative binding energies and by algebraically decaying interleg singlet-pair correlations, respectively.
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U2 - 10.1103/PhysRevB.98.121112
DO - 10.1103/PhysRevB.98.121112
M3 - Article
AN - SCOPUS:85054496405
VL - 98
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 12
M1 - 121112
ER -