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Andrej Pustogow
Researcher at University of California, Los Angeles
Publications - 62
Citations - 1463
Andrej Pustogow is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Mott insulator & Quantum spin liquid. The author has an hindex of 18, co-authored 46 publications receiving 1053 citations. Previous affiliations of Andrej Pustogow include University of Stuttgart & Vienna University of Technology.
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Journal ArticleDOI
Constraints on the superconducting order parameter in Sr2RuO4 from oxygen-17 nuclear magnetic resonance
Andrej Pustogow,Yi Luo,Yi Luo,Aaron Chronister,Yue-Shun Su,Dmitry A. Sokolov,Fabian Jerzembeck,Andrew P. Mackenzie,Andrew P. Mackenzie,Clifford W. Hicks,Naoki Kikugawa,Srinivas Raghu,Eve Bauer,Stuart Brown +13 more
TL;DR: NMR spectroscopy of oxygen-17 reveals a drop of the Knight shift in the superconducting state, contradicting previous work and imposing tight constraints on the order parameter symmetry of the system.
Journal ArticleDOI
Pronounced drop of $^{17}$O NMR Knight shift in superconducting state of Sr$_2$RuO$_4$.
Andrej Pustogow,Yongkang Luo,Aaron Chronister,Yue-Shun Su,Dmitry A. Sokolov,Fabian Jerzembeck,Andrew P. Mackenzie,Clifford W. Hicks,Naoki Kikugawa,Srinivas Raghu,Eve Bauer,Stuart Brown +11 more
TL;DR: In this paper, a reduction of Knight shifts was observed for all strain values and temperatures, consistent with a drop in spin polarization in the superconducting state in the quasi-two-dimensional and strongly correlated Sr$_2$RuO$_4$.
Journal Article
Constraints on the superconducting order parameter in Sr 2 RuO 4 from oxygen-17 nuclear magnetic resonance
Andrej Pustogow,Yongkang Luo,Aaron Chronister,Yue-Shun Su,Dmitry A. Sokolov,Fabian Jerzembeck,Andrew P. Mackenzie,Clifford W. Hicks,Naoki Kikugawa,Srinivas Raghu,Eric D. Bauer,Stuart Brown +11 more
TL;DR: In this paper, the authors used nuclear magnetic resonance (NMR) spectroscopy of oxygen-17, which is directly sensitive to the order parameter via hyperfine coupling to the electronic spin degrees of freedom, to probe the nature of superconductivity and its evolution under strain.
Journal ArticleDOI
Evidence for even parity unconventional superconductivity in Sr2RuO4.
Aaron Chronister,Andrej Pustogow,Naoki Kikugawa,Dmitry A. Sokolov,Fabian Jerzembeck,Clifford W. Hicks,Clifford W. Hicks,Andrew P. Mackenzie,Andrew P. Mackenzie,Eric D. Bauer,Stuart Brown +10 more
TL;DR: Establishing the condensate magnetic susceptibility reveals a sharp distinction between even- parity (singlet) and odd-parity (triplet) pairing since the superconducting condensates is magnetically polarizable only in the latter case.
Journal ArticleDOI
Quantum Spin Liquids Unveil the Genuine Mott State
Andrej Pustogow,M. Bories,A. Löhle,Roland Rösslhuber,Elena S. Zhukova,Boris Gorshunov,Silvia Tomić,J. A. Schlueter,Ralph Hübner,Takaaki Hiramatsu,Yukihiro Yoshida,Gunzi Saito,Reizo Kato,Tsung-Han Lee,Vladimir Dobrosavljevic,Simone Fratini,Martin Dressel +16 more
TL;DR: In this article, an electrodynamic response of three organic quantum spin liquids with different degrees of effective correlation is explored, where the absence of magnetic order enables unique insight into the nature of the genuine Mott state down to the most relevant low-temperature region.