Effects of edge disorder in nanoscale antiferromagnetic clusters

Autor(en)

Wanzhou Zhang, Wenan Guo, Ling Wang, Kaj H. Höglund, Anders W. Sandvik

Abstrakt

We study the distribution of local magnetic susceptibilities in the two-dimensional antiferromagnetic S=1/2 Heisenberg model on various random clusters in order to determine whether effects of edge disorder could be detected in NMR experiments (through the line shape, as given by the distribution of local Knight shifts). Although the effects depend strongly on the nature of the edge and the cluster size, our results indicate that line widths broader than the average shift should be expected even in clusters as large as approximate to 1000 lattice spacing in diameter. Experimental investigations of the NMR line width should give insights into the magnetic structure of the edges.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Beijing Normal University, Åbo Akademi University, Boston University

Journal

Physical Review B

Band

82

Anzahl der Seiten

4

ISSN

1098-0121

DOI

https://doi.org/10.1103/PhysRevB.82.012401

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/cb91c403-2cc9-4fa5-ae55-9c1be8c03d85