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Title: Magnetic excitations in stripe-ordered La 1.875 Ba 0.125 CuO 4 studied using resonant inelastic x-ray scattering

Abstract

The charge and spin correlations in La 1.875 Ba 0.125 CuO 4 (LBCO 1/8) are studied using Cu L 3 edge resonant inelastic x-ray scattering (RIXS). The static charge order (CO) is observed at a wave vector of ( 0.24 , 0 ) and its charge nature confirmed by measuring the dependence of this peak on the incident x-ray polarization. The damped spin excitation or “paramagnon” in LBCO 1/8 is then measured as it disperses through the CO wave vector. Within the experimental uncertainty no changes are observed in the paramagnon at that wave vector and the paramagnon seems to be similar to that measured in other cuprates, which have no static CO. Given that the stripe correlation modulates both the charge and spin degrees of freedom, it is likely that subtle changes do occur in the paramagnon due to CO. Consequently, we propose that future RIXS measurements, realized with higher-energy resolution and sensitivity, should be performed to test for these effects.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1385470
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 88; Journal Issue: 2; Related Information: CES partners with Brookhaven National Laboratory (BNL); Argonne National Laboratory; University of Illinois, Urbana-Champaign; Los Alamos National Laboratory; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; phonons, thermal conductivity, energy storage (including batteries and capacitors), superconductivity, defects, spin dynamics

Citation Formats

Dean, M. P. M., Dellea, G., Minola, M., Wilkins, S. B., Konik, R. M., Gu, G. D., Le Tacon, M., Brookes, N. B., Yakhou-Harris, F., Kummer, K., Hill, J. P., Braicovich, L., and Ghiringhelli, G. Magnetic excitations in stripe-ordered La 1.875 Ba 0.125 CuO 4 studied using resonant inelastic x-ray scattering. United States: N. p., 2013. Web. doi:10.1103/PhysRevB.88.020403.
Dean, M. P. M., Dellea, G., Minola, M., Wilkins, S. B., Konik, R. M., Gu, G. D., Le Tacon, M., Brookes, N. B., Yakhou-Harris, F., Kummer, K., Hill, J. P., Braicovich, L., & Ghiringhelli, G. Magnetic excitations in stripe-ordered La 1.875 Ba 0.125 CuO 4 studied using resonant inelastic x-ray scattering. United States. doi:10.1103/PhysRevB.88.020403.
Dean, M. P. M., Dellea, G., Minola, M., Wilkins, S. B., Konik, R. M., Gu, G. D., Le Tacon, M., Brookes, N. B., Yakhou-Harris, F., Kummer, K., Hill, J. P., Braicovich, L., and Ghiringhelli, G. Mon . "Magnetic excitations in stripe-ordered La 1.875 Ba 0.125 CuO 4 studied using resonant inelastic x-ray scattering". United States. doi:10.1103/PhysRevB.88.020403.
@article{osti_1385470,
title = {Magnetic excitations in stripe-ordered La 1.875 Ba 0.125 CuO 4 studied using resonant inelastic x-ray scattering},
author = {Dean, M. P. M. and Dellea, G. and Minola, M. and Wilkins, S. B. and Konik, R. M. and Gu, G. D. and Le Tacon, M. and Brookes, N. B. and Yakhou-Harris, F. and Kummer, K. and Hill, J. P. and Braicovich, L. and Ghiringhelli, G.},
abstractNote = {The charge and spin correlations in La 1.875 Ba 0.125 CuO 4 (LBCO 1/8) are studied using Cu L 3 edge resonant inelastic x-ray scattering (RIXS). The static charge order (CO) is observed at a wave vector of ( 0.24 , 0 ) and its charge nature confirmed by measuring the dependence of this peak on the incident x-ray polarization. The damped spin excitation or “paramagnon” in LBCO 1/8 is then measured as it disperses through the CO wave vector. Within the experimental uncertainty no changes are observed in the paramagnon at that wave vector and the paramagnon seems to be similar to that measured in other cuprates, which have no static CO. Given that the stripe correlation modulates both the charge and spin degrees of freedom, it is likely that subtle changes do occur in the paramagnon due to CO. Consequently, we propose that future RIXS measurements, realized with higher-energy resolution and sensitivity, should be performed to test for these effects.},
doi = {10.1103/PhysRevB.88.020403},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 2,
volume = 88,
place = {United States},
year = {2013},
month = {7}
}

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