Inversion of spin levels in exchange-coupled pairs under combined time reversal

Abstract

The method for transforming antiferromagnetic exchange interaction into the ferromagnetic one has been proposed for binuclear coordination compounds, which contain dimers consisting of iron or rare earth ions with arbitrary spins and having identical electronic configurations. The method is based on the time-reversal symmetry violation at isomorphic substitution of one of dimer’s ions by a “time-reversed” ion, when the spin projection operators of only one of dimer’s ions are reversed. Restoration of broken symmetry accompanied by its transformation into combined time-reversal symmetry is caused by sign reversing of exchange interaction constant J at isomorphic substitution. Experimental data confirm the proposed way of inverting the sign of J. The method for controlled synthesis of binuclear coordination compounds using specific isomorphic substitutions with “time-reversed” ions allows extending the class of coordination compounds characterized by ferromagnetic exchange interaction.

Authors and Affiliations

I. I. Geru

Keywords

Related Articles

Electrical and optical parameters of Cu6PS5I-based thin films deposited using magnetron sputtering

Cu6PS5I-based thin films were deposited onto silicate glass substrates by non-reactive radio-frequency magnetron sputtering. The chemical composition of thin films was determined using energy-dispersive X-ray spectroscop...

Ellipsometry of hybrid noble metal-dielectric nanostructures

Angular ellipsometric measurements of thin Ag, Cu films covered by HfO 2 protective layer were performed. The ellipsometric parameters ψ and ∆ were measured in θ = 43°...85° light incidence angle range, where ψ is the az...

Temperature effect on light polarization in uniaxial crystals

It has been shown that changes in temperature of uniaxial single crystal are accompanied by changes in the polarization plane angular position and the light intensity that subsequently passes through the polarizer, uniax...

Performance limits of terahertz zero biased rectifying detectors for direct detection

Performance limits of uncooled unbiased field effect transistors (FETs) and Schottky-barrier diodes (SBDs) as direct detection rectifying terahertz (THz) detectors operating in the broadband regime have been considered i...

Effect of thermal annealing on electrical and photoelectrical properties of n-InSb

InSb wafers of n-type conductivity were annealed at 300, 370 and 400 °C for 30 min in an open tube system under flowing argon ambient. The conductivity type conversion are revealed for the first time in samples with the...

Download PDF file
  • EP ID EP416028
  • DOI 10.15407/spqeo21.03.238
  • Views 74
  • Downloads 0

How To Cite

I. I. Geru (2018). Inversion of spin levels in exchange-coupled pairs under combined time reversal. Semiconductor Physics, Quantum Electronics and Optoelectronics, 21(3), 238-248. https://europub.co.uk/articles/-A-416028