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I. A. Nechaev
Researcher at Spanish National Research Council
Publications - 61
Citations - 1250
I. A. Nechaev is an academic researcher from Spanish National Research Council. The author has contributed to research in topics: Topological insulator & Quasiparticle. The author has an hindex of 18, co-authored 61 publications receiving 1086 citations. Previous affiliations of I. A. Nechaev include Donostia International Physics Center & University of the Basque Country.
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Journal ArticleDOI
Ideal two-dimensional electron systems with a giant Rashba-type spin splitting in real materials: surfaces of bismuth tellurohalides.
Sergey V. Eremeev,Sergey V. Eremeev,I. A. Nechaev,I. A. Nechaev,Yuri M. Koroteev,Yuri M. Koroteev,Pedro M. Echenique,Pedro M. Echenique,Pedro M. Echenique,Eugene V. Chulkov,Eugene V. Chulkov,Eugene V. Chulkov +11 more
TL;DR: A giant Rashba-type spin splitting in two-dimensional electron systems that reside at tellurium-terminated surfaces of bismuth tellurohalides is reported on.
Journal ArticleDOI
Evidence for a direct band gap in the topological insulator Bi 2 Se 3 from theory and experiment
I. A. Nechaev,I. A. Nechaev,Richard C. Hatch,Marco Bianchi,Dandan Guan,Christoph Friedrich,Irene Aguilera,Jianli Mi,Bo B. Iversen,Stefan Blügel,Ph. Hofmann,Eugene V. Chulkov,Eugene V. Chulkov,Eugene V. Chulkov +13 more
TL;DR: Using angle-resolved photoelectron spectroscopy and ab initio $GW$ calculations, the authors unambiguously show that the widely investigated three-dimensional topological insulator Bi${}{2}$Se${}_{3}$ has a direct band gap at the $\ensuremath{\Gamma}$ point.
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Interplay of Surface and Dirac Plasmons in Topological Insulators: The Case of Bi 2 Se 3
Antonio Politano,V. M. Silkin,V. M. Silkin,V. M. Silkin,I. A. Nechaev,I. A. Nechaev,I. A. Nechaev,Miriam S. Vitiello,Leonardo Viti,Ziya S. Aliev,Ziya S. Aliev,Mahammad B. Babanly,Gennaro Chiarello,Pedro M. Echenique,Pedro M. Echenique,Pedro M. Echenique,Evgueni V. Chulkov +16 more
TL;DR: The proposed theoretical model accounting for the coexistence of three-dimensional doping electrons and two-dimensional Dirac fermions accurately represents the experimental observations and reveals novel routes for engineering plasmonic devices based on topological insulators.
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Rashba split surface states in BiTeBr
TL;DR: In this article, the bulk band structure and surface states of BiTeBr were studied within density functional theory and both ordered and disordered phases, which differ in atomic order in the Te-Br sublattice.
Journal ArticleDOI
Emerging 2D-ferromagnetism and strong spin-orbit coupling at the surface of valence-fluctuating EuIr 2 Si 2
Susanne Schulz,I. A. Nechaev,I. A. Nechaev,M. Güttler,G. Poelchen,Alexander Generalov,Steffen Danzenbächer,Alla Chikina,Silvia Seiro,Kristin Kliemt,Alexandra Yu. Vyazovskaya,Alexandra Yu. Vyazovskaya,Timur K. Kim,Pavel Dudin,Evgueni V. Chulkov,Clemens Laubschat,Eugene E. Krasovskii,Eugene E. Krasovskii,Eugene E. Krasovskii,Christoph Geibel,Cornelius Krellner,Kurt Kummer,Denis V. Vyalikh,Denis V. Vyalikh,Denis V. Vyalikh +24 more
TL;DR: In this article, the authors present the valence-fluctuating material EuIr2Si2, where in contrast to its non-magnetic bulk, the Si-terminated surface reveals controllable 2D ferromagnetism.