Dresden 2009 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 38: Correlated Electrons: Low-dimensional Systems - Models 1

TT 38.3: Vortrag

Donnerstag, 26. März 2009, 10:00–10:15, HSZ 301

Ground State Properties of the 1D t-J Model with Density Matrix Renormalization Group — •Alexander Moreno¹, Alejandro Muramatsu¹, Salvatore Manmana², and Reinhard Noak³ — ¹Institut für Theoretische Physik III, Universität Stuttgart, Germany — ²Institute of Theoretical Physics, Condensed Matter Theory, Lausanne, Switzerland — ³Philipps Universität Marburg, Germany

We study the ground state properties of the one-dimensional t-J model by using the Density Matrix Renormalization Group (DMRG). On the basis of spin-spin, density-density, and pairing correlation functions we study the possible phases, like Luttinger liquid, superconducting, spin-gap and phase separated regions and clarify the contradictions between different studies[1-3].

[1] M. Ogata, M. U. Luchini, S. Sorella, and F. Assaad, Phys. Rev. Lett. 66, 2388 (1991).

[2] C. S. Hellberg and E. J. Mele, Phys. Rev. B. 48, 1 (1993).

[3]M. Nakamura, K. Nomura, and Kitazawa, Phys. Rev. Lett. 79, 3214 (1997).