Kagomé Lattice Antiferromagnet Stripped to Its Basics

Autor:	Claire Lhuillier, Philippe Lecheminant, Alexei M. Tsvelik, Chris Hooley, Patrick Azaria
Rok vydání:	1998
Předmět:	Physics Condensed matter physics General Physics and Astronomy Condensed Matter - Strongly Correlated Electrons Low energy Local symmetry Lattice (order) Quantum mechanics Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Ising model Spectral gap Singlet state Majorana fermion
Zdroj:	University of St Andrews CRIS
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.81.1694
Popis:	We study a model of a spin S = 1/2 Heisenberg antiferromagnet on a one dimensional lattice with the local symmetry of the two dimensional kagom{\'e} lattice. Using three complementary approaches, it is shown that the low energy spectrum can be described by two critical Ising models with different velocities. One of these velocities is small, leading to a strongly localized Majorana fermion. These excitations are singlet ones whereas the triplet sector has a spectral gap. Comment: 4 pages
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::347804764e0cb356136504575b63bdf9 https://doi.org/10.1103/physrevlett.81.1694 Zobrazit plný text záznamu