While there is increasing evidence for antiferromagnetic (AF) ordering in the Cu-O planes of high-Tc superconductors, either static or fluctuating, there is no direct evidence so far for the charge stripes that should separate the AF domains. By investigating the optical response of La2−xSrxCuO4 for 0≤x≤0.26 and 30≤T≤295 K, we identify strong far infrared peaks whose energy, width, and intensity are consistent with a scenario of charge stripe dynamics in the Cu-O planes.
Phase diagram of LaSrCuO probed by infrared: Imprints of charge stripe excitations / Lucarelli, A.; Lupi, Stefano; Ortolani, Michele; Calvani, Paolo; Maselli, P.; Capizzi, M.; Giura, P.; Eisaki, H.; Kikugawa, N.; Fujita, T.; Fujita, M.; Yamada, K.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 90:(2003), pp. 037002-1-037002-4.
Phase diagram of LaSrCuO probed by infrared: Imprints of charge stripe excitations
LUPI, Stefano;ORTOLANI, MICHELESecondo
Investigation
;CALVANI, Paolo;
2003
Abstract
While there is increasing evidence for antiferromagnetic (AF) ordering in the Cu-O planes of high-Tc superconductors, either static or fluctuating, there is no direct evidence so far for the charge stripes that should separate the AF domains. By investigating the optical response of La2−xSrxCuO4 for 0≤x≤0.26 and 30≤T≤295 K, we identify strong far infrared peaks whose energy, width, and intensity are consistent with a scenario of charge stripe dynamics in the Cu-O planes.| File | Dimensione | Formato | |
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