Thermal entanglement in the nanotubular system Na2 V3 O7

T. Vértesi, E. Bene

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40 Citations (Scopus)


Macroscopic entanglement witnesses have been put forward recently to reveal nonlocal quantum correlations between individual constituents of the solid at nonzero temperatures. Here we apply a recently proposed universal entanglement witness, the magnetic susceptibility [New J. Phys. 7, 258 (2005)] for the estimation of the critical temperature Tc in the nanotubular system Na2 V3 O7 below which thermal entanglement is present. As a result of an analysis based on the experimental data for dc-magnetic susceptibility, we show that Tc 365 K, which is approximately three times higher than the critical temperature corresponding to the bipartite entanglement.

Original languageEnglish
Article number134404
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number13
Publication statusPublished - Apr 11 2006


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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