<div class="csl-bib-body">
<div class="csl-entry">Dziom, V., Shuvaev, A., Gospodarič, J., Novik, E. G., Dobretsova A. A., Mikhailov, N. N., Kvon, Z. D., Alpichshev, Z., & Pimenov, A. (2022). Universal transparency and asymmetric spin splitting near the Dirac point in HgTe quantum wells. <i>Physical Review B</i>, <i>106</i>(4), Article 045302. https://doi.org/10.1103/PhysRevB.106.045302</div>
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dc.identifier.issn
2469-9950
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/136437
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dc.description.abstract
Spin-orbit coupling in thin HgTe quantum wells results in a relativistic-like electron band structure, making it a versatile solid state platform to observe and control nontrivial electrodynamic phenomena. Here we report an observation of universal terahertz (THz) transparency determined by fine-structure constant α≈1/137 in 6.5-nm-thick HgTe layer, close to the critical thickness separating phases with topologically different electronic band structure. Using THz spectroscopy in a magnetic field we obtain direct evidence of asymmetric spin splitting of the Dirac cone. This particle-hole asymmetry facilitates optical control of edge spin currents in the quantum wells.
en
dc.language.iso
en
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dc.publisher
AMER PHYSICAL SOC
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dc.relation.ispartof
Physical Review B
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dc.subject
Topology
en
dc.title
Universal transparency and asymmetric spin splitting near the Dirac point in HgTe quantum wells