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Regular version of the site

Article

Formation of the S=1 paramagnetic centers in the bond-diluted spin-gap magnet (C4H12N2)(Cu2Cl6)

Journal of Physics: Conference Series. 2018. Vol. 969. No. 012104. P. 1-5.
Glazkov V N, Krasnikova Yu V, Huvonen D., Zheludev A.

Recently found quasi-two dimensional metalloorganic compound
(C4H12N2)(Cu2Cl6) (abbreviated PHCC) is an example of a spin-gap magnet. Its ground
state is a nonmagnetic singlet separated from the triplet excitations by an energy gap of
approximately 1 meV. This compound allows partial substitution of chlorine ions by bromine,
which results in the modulation of the affected exchange bonds. We have found by means of
electron spin resonance spectroscopy that this doping results in the formation of the gapless
S = 1 paramagnetic centers. These centers can be interpreted as triplet excitations trapped in
a potential well created by doping.