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Title: Cu nuclear magnetic resonance study of charge and spin stripe order in La 1.875 Ba 0.125 CuO 4

In this paper, we present a Cu nuclear magnetic/quadrupole resonance study of the charge stripe ordered phase of LBCO, with detection of previously unobserved (“wiped-out”) signal. We show that spin-spin and spin-lattice relaxation rates are strongly enhanced in the charge ordered phase, explaining the apparent signal decrease in earlier investigations. The enhancement is caused by magnetic, rather than charge fluctuations, conclusively confirming the long-suspected assumption that spin fluctuations are responsible for the wipeout effect. Observation of the full Cu signal enables insight into the spin and charge dynamics of the stripe-ordered phase, and measurements in external magnetic fields provide information on the nature and suppression of spin fluctuations associated with charge order. Lastly, we find glassy spin dynamics, in agreement with previous work, and incommensurate static charge order with charge modulation amplitude similar to other cuprate compounds, suggesting that the amplitude of charge stripes is universal in the cuprates.
Authors:
 [1] ;  [2] ;  [3] ;  [1]
  1. University of Zagreb (Croatia). Department of Physics, Faculty of Science
  2. IFW Dresden, Institute for Solid State Research, Dresden (Germany)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Department
Publication Date:
Report Number(s):
BNL-113817-2017-JA
Journal ID: ISSN 2469-9950; PRBMDO; R&D Project: PO010; KC0201060; TRN: US1702618
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 5; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1358011
Alternate Identifier(s):
OSTI ID: 1344006

Pelc, D., Grafe, H. -J., Gu, G. D., and Požek, M.. Cu nuclear magnetic resonance study of charge and spin stripe order in La1.875Ba0.125CuO4. United States: N. p., Web. doi:10.1103/PhysRevB.95.054508.
Pelc, D., Grafe, H. -J., Gu, G. D., & Požek, M.. Cu nuclear magnetic resonance study of charge and spin stripe order in La1.875Ba0.125CuO4. United States. doi:10.1103/PhysRevB.95.054508.
Pelc, D., Grafe, H. -J., Gu, G. D., and Požek, M.. 2017. "Cu nuclear magnetic resonance study of charge and spin stripe order in La1.875Ba0.125CuO4". United States. doi:10.1103/PhysRevB.95.054508. https://www.osti.gov/servlets/purl/1358011.
@article{osti_1358011,
title = {Cu nuclear magnetic resonance study of charge and spin stripe order in La1.875Ba0.125CuO4},
author = {Pelc, D. and Grafe, H. -J. and Gu, G. D. and Požek, M.},
abstractNote = {In this paper, we present a Cu nuclear magnetic/quadrupole resonance study of the charge stripe ordered phase of LBCO, with detection of previously unobserved (“wiped-out”) signal. We show that spin-spin and spin-lattice relaxation rates are strongly enhanced in the charge ordered phase, explaining the apparent signal decrease in earlier investigations. The enhancement is caused by magnetic, rather than charge fluctuations, conclusively confirming the long-suspected assumption that spin fluctuations are responsible for the wipeout effect. Observation of the full Cu signal enables insight into the spin and charge dynamics of the stripe-ordered phase, and measurements in external magnetic fields provide information on the nature and suppression of spin fluctuations associated with charge order. Lastly, we find glassy spin dynamics, in agreement with previous work, and incommensurate static charge order with charge modulation amplitude similar to other cuprate compounds, suggesting that the amplitude of charge stripes is universal in the cuprates.},
doi = {10.1103/PhysRevB.95.054508},
journal = {Physical Review B},
number = 5,
volume = 95,
place = {United States},
year = {2017},
month = {2}
}