%AJiang, Shengtao%AScalapino, Douglas%AWhite, Steven%BJournal Name: Proceedings of the National Academy of Sciences; Journal Volume: 118; Journal Issue: 44; Related Information: CHORUS Timestamp: 2021-11-12 06:10:51
%D2021%IProceedings of the National Academy of Sciences; None
%JJournal Name: Proceedings of the National Academy of Sciences; Journal Volume: 118; Journal Issue: 44; Related Information: CHORUS Timestamp: 2021-11-12 06:10:51
%K
%MOSTI ID: 10307360
%PMedium: X
%TGround-state phase diagram of the
t-t
′
-J
model
%X
We report results of large-scale ground-state density matrix renormalization group (DMRG) calculations on t--J cylinders with circumferences 6 and 8. We determine a rough phase diagram that appears to approximate the two-dimensional (2D) system. While for many properties, positive and negativevalues () appear to correspond to electron- and hole-doped cuprate systems, respectively, the behavior of superconductivity itself shows an inconsistency between the model and the materials. The(hole-doped) region shows antiferromagnetism limited to very low doping, stripes more generally, and the familiar Fermi surface of the hole-doped cuprates. However, we findstrongly suppresses superconductivity. The(electron-doped) region shows the expected circular Fermi pocket of holes around thepoint and a broad low-doped region of coexisting antiferromagnetism and d-wave pairing with a triplet p component at wavevectorinduced by the antiferromagnetism and d-wave pairing. The pairing for the electron low-doped system withis strong and unambiguous in the DMRG simulations. At larger doping another broad region with stripes in addition to weaker d-wave pairing and striped p-wave pairing appears. In a small doping region nearfor, we find an unconventional type of stripe involving unpaired holes located predominantly on chains spaced three lattice spacings apart. The undoped two-leg ladder regions in between mimic the short-ranged spin correlations seen in two-leg Heisenberg ladders.
%0Journal Article