Abstract

Approximately 0.5% of nonmagnetic divalent ions Zn, Cd, and Hg have been alternatively substituted for Ni in the linear chain of antiferromagnetically coupled ${\mathrm{Ni}}^{2+}$ (S=1) spins in [Ni(${\mathrm{C}}_{2}$${\mathrm{H}}_{8}$${\mathrm{N}}_{2}$${)}_{2}$(${\mathrm{NO}}_{2}$)]${\mathrm{CIO}}_{4}$ (NENP). While at low temperature the pure NENP shows no EPR signal, the doped NENP shows identical EPR spectra corresponding to the fractional spin S=1/2 states at the ``open'' ends of the Ni chains adjacent to the nonmagnetic substitutions.

Keywords

AntiferromagnetismSpinsElectron paramagnetic resonanceCondensed matter physicsPhysicsDopingSpin (aerodynamics)Spectral lineChain (unit)IonMaterials scienceCrystallographyNuclear magnetic resonanceChemistryQuantum mechanicsThermodynamics

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Publication Info

Year
1991
Type
article
Volume
67
Issue
12
Pages
1614-1617
Citations
177
Access
Closed

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S. H. Glarum, S. Geschwind, K. M. Lee et al. (1991). Observation of fractional spin<i>S</i>=1/2 on open ends of<i>S</i>=1 linear antiferromagnetic chains: Nonmagnetic doping. Physical Review Letters , 67 (12) , 1614-1617. https://doi.org/10.1103/physrevlett.67.1614

Identifiers

DOI
10.1103/physrevlett.67.1614