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Alexandre Ivanov
Researcher at Kurchatov Institute
Publications - 114
Citations - 3727
Alexandre Ivanov is an academic researcher from Kurchatov Institute. The author has contributed to research in topics: Inelastic neutron scattering & Superconductivity. The author has an hindex of 32, co-authored 99 publications receiving 3451 citations.
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Journal ArticleDOI
Electronic liquid crystal state in the high-temperature superconductor YBa2Cu3O6.45.
Vladimir Hinkov,D. Haug,Benoît Fauqué,P. Bourges,Yvan Sidis,Alexandre Ivanov,Christian Bernhard,Chengtian Lin,Bernhard Keimer +8 more
TL;DR: The spontaneous onset of a one-dimensional, incommensurate modulation of the spin system in the high-transition-temperature superconductor YBa2Cu3O6 suggests that soft spin fluctuations are a microscopic route toward electronic liquid crystals and that nematic order can coexist with high-tem temperature superconductivity in underdoped cuprates.
Journal ArticleDOI
Neutron Scattering from Magnetic Excitations in Bi_2 Sr_2 Ca_2 O_8+delta
H. F. Fong,P. Bourges,Y. Sidis,L. P. Regnault,Alexandre Ivanov,G. D. Gu,N. Koshizuka,Bernhard Keimer +7 more
TL;DR: In this paper, a magnetic resonance peak in the superconducting state of a different copper oxide system, Bi_2 Sr_2 Ca Cu_2 O(8+δ) was found.
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The spin excitation spectrum in superconducting YBa(2)Cu(3)O(6.85)
P. Bourges,Y. Sidis,H. F. Fong,L. P. Regnault,Jacques Bossy,Alexandre Ivanov,Bernhard Keimer,Bernhard Keimer +7 more
TL;DR: In this article, a comprehensive inelastic neutron scattering study of magnetic excitations in the near optimally doped high-temperature superconductor YBa2Cu3O6.85 is presented.
Journal ArticleDOI
Two-dimensional geometry of spin excitations in the high-transition-temperature superconductor YBa2Cu3O6+x.
Vladimir Hinkov,Stéphane Pailhès,P. Bourges,Yvan Sidis,Alexandre Ivanov,A. Kulakov,Chengtian Lin,D. P. Chen,Christian Bernhard,Bernhard Keimer +9 more
TL;DR: It is demonstrated that the geometry of the magnetic fluctuations is two-dimensional, and Rigid stripe arrays appear to be ruled out over a wide range of doping levels in YBa2Cu3O6+x, but the data may be consistent with liquid-crystalline stripe order.
Journal ArticleDOI
Higgs mode and its decay in a two-dimensional antiferromagnet
Anil Jain,Anil Jain,M. Krautloher,Juan Porras,Gihun Ryu,D. P. Chen,Douglas L. Abernathy,Jitae Park,Alexandre Ivanov,Jiří Chaloupka,Giniyat Khaliullin,Bernhard Keimer,Bumjoon Kim,Bumjoon Kim +13 more
TL;DR: In this paper, a spin-polarized inelastic neutron scattering study of two-dimensional antiferromagnet Ca2RuO4 has been conducted, which reveals evidence for a condensed-matter analogue of the Higgs mode, and its subsequent decay into transverse Goldstone modes.