2007/03/08 by I. J. Hamad, A. E. Trumper, L. O. Manuel
Chemistry · Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Angle-resolved photoemission spectroscopy #Antiferromagnetism #Condensed matter physics #Heisenberg model #Inorganic Fluorides and Related Compounds #Ionosphere and magnetosphere dynamics #Mathematics #Order (exchange) #Physics #Quantum mechanics #Realization (probability) #Spectral line #Statistical physics #Theoretical physics #cond-mat.str-el
paper · pdf · doi:10.1016/j.physb.2007.04.051
7 pages, 2 figures. To be published in Physica B
arxiv created 2007/03/08 · openalex publication_date 2007/04/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have analyzed theoretically the photoemission spectra of the insulating compound Li2VOSiO4.Recently, this compound has been proposed as the first experimental realization of the frustrated J1-J2 Heisenberg model. Although it is well known that Li2VOSiO4 is magnetically ordered in a collinear arrangement below TN=2.8 K, there is some controversy about the coexistence of two collinear phases above TN. Using a generalized t-J model we have obtained a complex spectral structure that can be traced back to the underlying collinear magnetic structures. We discuss the possibility to use ARPES experiments as a way to discern among the different scenarios proposed in the literature.