Anisotropic nematic fluctuations above the ferroquadrupolar transition in TmVO4

Autor:	Ziwen Mei, Zhipan Wang, P. Menegasso, Ian R. Fisher, N. J. Curro, P. Massat, I. Vinograd, D. Garcia
Rok vydání:	2021
Předmět:	Condensed Matter - Strongly Correlated Electrons Materials science Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Liquid crystal 0103 physical sciences FOS: Physical sciences 010306 general physics Anisotropy 01 natural sciences 010305 fluids & plasmas
Zdroj:	Physical Review B. 104
ISSN:	2469-9969 2469-9950
DOI:	10.1103/physrevb.104.205137
Popis:	TmVO$_4$ exhibits ferroquadrupolar order below 2.15 K with a well-isolated non-Kramers ground state doublet, and is a model system to understand Ising nematic order. We present $^{51}$V nuclear magnetic resonance data as a function of field orientation in a single crystal. Although the spectra are well understood in terms of direct dipolar hyperfine couplings, the spin lattice relaxation rate exhibits strong anisotropy that cannot be understood in terms of magnetic fluctuations. We find that the spin lattice relaxation rate scales with the shear elastic constant associated with the ferroquadrupole phase transition, suggesting that quadrupole (nematic) fluctuations dominate the spin lattice relaxation for in-plane fields. 7 pages, 5 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e47520725e23df2cf42862477bacfde2 https://doi.org/10.1103/physrevb.104.205137 Zobrazit plný text záznamu