Quantification of quantum discord in a antiferromagnetic Heisenberg compound

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4873030· OSTI ID:22269362

Singh, H., E-mail: [e-mail]; Chakraborty, T., E-mail: [e-mail]; Mitra, C., E-mail: [e-mail] ^[1]

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1. Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Campus, Mohanpur -741252, Nadia, West Bengal (India)

An experimental quantification of concurrence and quantum discord from heat capacity (C{sub p}) measurement performed over a solid state system has been reported. In this work, thermodynamic measurements were performed on copper nitrate (CN, Cu(NO{sub 3}){sub 2}⋅2.5H{sub 2}O) single crystals which is an alternating antiferromagnet Heisenberg spin 1/2 system. CN being a weak dimerized antiferromagnet is an ideal system to investigate correlations between spins. The theoretical expressions were used to obtain concurrence and quantum discord curves as a function of temperature from heat capacity data of a real macroscopic system, CN.

• OSTI ID: 22269362
• Journal Information: AIP Conference Proceedings, Vol. 1591, Issue 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
CARBON NITRIDES
COPPER NITRATES
MONOCRYSTALS
SOLIDS
SPECIFIC HEAT
SPIN
TEMPERATURE DEPENDENCE