English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The one-dimensional XXZ model is studied in the presence of disorder in theHeisenberg Exchange Integral. Recent predictions obtained from renormalizationgroup calculations are investigated numerically using a Lanczos algorithm onchains of up to 18 sites. It is found that in the presence of strongX-Y-symmetric random exchange couplings, a ``random singlet'' phase withquasi-long-range order in the spin-spin correlations persists. As the planaranisotropy is varied, the full zero-temperature phase diagram is obtained andcompared with predictions of Doty and Fisher [Phys. Rev. B {\bf 45 }, 2167(1992)].Comment: 9 pages + 8 plots appended, RevTex, FSU-SCRI-93-98 and  ORNL/CCIP/93/1

Random-exchange disorder in the spin-1/2XXZchain