Abstract
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.
Highlights
Spin-gap magnets are one of the focus topics of modern magnetism [1]
We have found by means of electron spin resonance spectroscopy that this doping results in the formation of the gapless S = 1 paramagnetic centers
The stability of the singlet ground state versus conventional forms ofmagnetic order is granted by the energy gap of exchange origin separating singlet ground state from the excited triplet excitations
Summary
Spin-gap magnets are one of the focus topics of modern magnetism [1]. Due to a particular architecture of the exchange bonds, which frequently invokes dimer motives, these magnets remains in the disordered singlet ground state to the lowest temperatures despite strong antiferromagnetic interspin interaction. Its ground state is a nonmagnetic singlet separated from the triplet excitations by an energy gap of approximately 1 meV. It allows to study fine details of the excitations spectrum with the routine resolution of less 1 GHz (which corresponds to the energy of 5μeV) complementing powerful inelastic neutron scattering method.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
