Search Results - "Viirok, J."
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Duality and domain wall dynamics in a twisted Kitaev chain
Published in Nature physics (01-07-2021)“…The Ising chain in a transverse field is a paradigmatic model for a host of physical phenomena, including spontaneous symmetry breaking, quantum criticality…”
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In Situ Electric-Field Control of THz Nonreciprocal Directional Dichroism in the Multiferroic Ba2CoGe2O7
Published in Physical review letters (08-10-2021)“…Nonreciprocal directional dichroism, also called the optical-diode effect, is an appealing functional property inherent to the large class of…”
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In Situ Electric-Field Control of THz Nonreciprocal Directional Dichroism in the Multiferroic Ba 2 CoGe 2 O 7
Published in Physical review letters (01-10-2021)Get full text
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In Situ Electric-Field Control of THz Nonreciprocal Directional Dichroism in the Multiferroic Ba_{2}CoGe_{2}O_{7}
Published in Physical review letters (08-10-2021)Get full text
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Selection rules and dynamic magnetoelectric effect of the spin waves in multiferroic BiFeO$_3
Published 30-09-2021“…We report the magnetic field dependence of the THz absorption and non-reciprocal directional dichroism spectra of BiFeO$_3$ measured on the three principal…”
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Refining magnetic interactions from the magnetic field dependence of spin-wave excitations in magnetoelectric LiFePO$_4
Published 27-04-2022“…We investigated the spin excitations of magnetoelectric $\text{LiFePO}_4$ by THz absorption spectroscopy in magnetic fields up to 33$\,$T. By studying their…”
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In-situ electric field control of THz non-reciprocal directional dichroism in the multiferroic Ba$_2$CoGe$_2$O$_7
Published 25-01-2021“…Phys. Rev. Lett. 127, 157201 (2021) Non-reciprocal directional dichroism, also called the optical-diode effect, is an appealing functional property inherent to…”
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Magnetic anisotropy and exchange paths for octa- and tetrahedrally coordinated Mn$^{2+}$ ions in the honeycomb multiferroic Mn$_2$Mo$_3$O$_8
Published 24-09-2020“…We investigated the static and dynamic magnetic properties of the polar ferrimagnet Mn$_2$Mo$_3$O$_8$ in three magnetically ordered phases via magnetization,…”
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Duality and domain wall dynamics in a twisted Kitaev chain
Published 29-09-2020“…Nature Physics (2021) The Ising chain in transverse field is a paradigmatic model for a host of physical phenomena, including spontaneous symmetry breaking,…”
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Directional dichroism in the paramagnetic state of multiferroics: a case study of infrared light absorption in Sr2CoSi2O7 at high temperatures
Published 26-09-2018“…Phys. Rev. B 99, 014410 (2019) The coexisting magnetic and ferroelectric orders in multiferroic materials give rise to a handful of novel magnetoelectric…”
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Competing Exchange Interactions in the Multiferroic and Ferrimagnetic CaBaCo$_4$O$_7
Published 19-08-2016“…Phys. Rev. B 95, 024423 (2017) Competing exchange interactions can produce complex magnetic states together with spin-induced electric polarizations. With…”
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