A Coupled Spin-Electron Diamond Chain with Different Landé g-Factors of Localized Ising Spins and Mobile Electrons

J. Torrico; M. Pereira; J. Strečka; M. Lyra

doi:10.12693/APhysPolA.131.140

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Acta Physica Polonica A

2017 | 132 | 1 | 140-142

Article title

A Coupled Spin-Electron Diamond Chain with Different Landé g-Factors of Localized Ising Spins and Mobile Electrons

Authors

J. Torrico , M. Pereira , J. Strečka , M. Lyra

Content

http://przyrbwn.icm.edu.pl/APP/PDF/132/app132z1p36.pdf [remote]

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Abstracts

A coupled spin-electron diamond chain with localized Ising spins placed on its nodal sites and mobile electrons delocalized over interstitial sites is explored in a magnetic field taking into account the difference between the Landé g-factors of the localized spins and mobile electrons. The ground-state phase diagram is constituted by two classical ferrimagnetic phases, the quantum unsaturated paramagnetic phase and the saturated paramagnetic phase. Both classical ferrimagnetic phases as well as the unsaturated paramagnetic phase are reflected in a low-temperature magnetization curve as intermediate magnetization plateaus. The unsaturated paramagnetic phase is quantum in its character as evidenced by the fermionic concurrence calculated for a pair of the mobile electrons hopping in between the interstitial sites. It is shown that the magnetic field can under certain conditions induce a quantum entanglement above the disentangled ground state.

Keywords

05.50.+q 75.10.Pq 75.30.Kz 75.40.Cx

Publisher

Institute of Physics, Polish Academy of Sciences

Journal

Acta Physica Polonica A

Year

2017

Volume

132

Issue

Pages

140-142

Physical description

Dates

published

2017-07

References

[1] M.A. Nielsen, I.L. Chuang, Quantum Computation and Quantum Information, Springer, Cambridge 2000, doi: 10.1080/00107514.2011.587535
[2] M.S.S. Pereira, F.A.B.F. de Moura, M.L. Lyra, Phys. Rev. B 77, 024402 (2008), doi: 10.1103/PhysRevB.77.024402
[3] M.S.S. Pereira, F.A.B.F. de Moura, M.L. Lyra, Phys. Rev. B 79, 054427 (2009), doi: 10.1103/PhysRevB.79.054427
[4] B.M. Lisnii, Low Temp. Phys. 37, 296 (2011), doi: 10.1063/1.3592221
[5] J. Torrico, M. Rojas, M.S.S. Pereira, J. Strečka, M.L. Lyra, Phys. Rev. B 93, 014428 (2016), doi: 10.1103/PhysRevB.93.014428
[6] W.-G. Yin, Ch.R. Roth, A.M. Tsvelik, arXiv: 1510.00030 http://arXiv.org/abs/1510.00030

Document Type

Publication order reference

YADDA identifier

bwmeta1.element.bwnjournal-article-appv132n1p36kz

Identifiers

DOI

10.12693/APhysPolA.131.140