Indications of spin-charge separation in the two-dimensionalt-Jmodel

1993/09/21 by W. O. Putikka, Rodney L. Glenister, R. L. Glenister +4 · 55 citations
Chemistry · Mathematics · Physics and Astronomy · #Advanced NMR Techniques and Applications #Charge (physics) #Condensed matter physics #Mathematics #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Separation (statistics) #Spin (aerodynamics) #Statistical physics #Statistics #Thermodynamics #cond-mat

paper · pdf · doi:10.1103/physrevlett.73.170

published in Physical Review Letters 73(1), 170-173 (American Physical Society) · 11 pages, RevTex 3.0, 8 postscript figures appended, NHMFL-93-988

arxiv created 1993/09/21 · openalex publication_date 1994/07/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We have calculated the high temperature expansion for the density correlation function N(q) of the two-dimensional t-J model. On extrapolation by Pad'e approximants to low temperatures we find that N(q) has 2k_F^SF as a characteristic wave vector. Previous studies have shown that n_k has a steplike feature at k_F and S(q) has 2k_F as a characteristic wave vector. Here k_F and k_F^SF are the Fermi wave vectors of the nearest-neighbor square lattice tight-binding and spinless fermion models, respectively. By comparison to known results for one dimension this suggests spin-charge separation in the two-dimensional t-J model.

Cited by

• Formation of clusters in the ground state of the t–J model on a two-leg ladder
• Spin and charge fluctuations in theU−t−t′model