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Title: Magnetic field induced anisotropy of 139La spin-lattice relaxation rates in stripe ordered La 1.875Ba 0.125CuO 4

Abstract

We report 139La nuclear magnetic resonance studies performed on a La 1.875Ba 0.125CuO 4 single crystal. The data show that the structural phase transitions (high-temperature tetragonal → low-temperature orthorhombic → low-temperature tetragonal phase) are of the displacive type in this material. The 139La spin-lattice relaxation rate T –1 1 sharply upturns at the charge-ordering temperature T CO = 54 K, indicating that charge order triggers the slowing down of spin fluctuations. Detailed temperature and field dependencies of the T –1 1 below the spin-ordering temperature T SO=40 K reveal the development of enhanced spin fluctuations in the spin-ordered state for H ∥ [001], which are completely suppressed for large fields along the CuO 2 planes. Lastly, our results shed light on the unusual spin fluctuations in the charge and spin stripe ordered lanthanum cuprates.

Authors:
 [1];  [2];  [1];  [2];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Institute for Solid State Research, Dresden (Germany); Technische Univ. Dresden, Dresden (Germany)
  3. Institute for Solid State Research, Dresden (Germany)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1235866
Alternate Identifier(s):
OSTI ID: 1224361
Report Number(s):
BNL-111658-2015-JA
Journal ID: ISSN 1098-0121; PRBMDO; R&D Project: PO010; KC0201060
Grant/Contract Number:  
SC00112704; AC02-98CH10886
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 15; 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

Citation Formats

S. -H. Baek, Gu, G. D., Utz, Y., Hucker, M., Buchner, B., and Grafe, H. -J. Magnetic field induced anisotropy of 139La spin-lattice relaxation rates in stripe ordered La1.875Ba0.125CuO4. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.155144.
S. -H. Baek, Gu, G. D., Utz, Y., Hucker, M., Buchner, B., & Grafe, H. -J. Magnetic field induced anisotropy of 139La spin-lattice relaxation rates in stripe ordered La1.875Ba0.125CuO4. United States. https://doi.org/10.1103/PhysRevB.92.155144
S. -H. Baek, Gu, G. D., Utz, Y., Hucker, M., Buchner, B., and Grafe, H. -J. Mon . "Magnetic field induced anisotropy of 139La spin-lattice relaxation rates in stripe ordered La1.875Ba0.125CuO4". United States. https://doi.org/10.1103/PhysRevB.92.155144. https://www.osti.gov/servlets/purl/1235866.
@article{osti_1235866,
title = {Magnetic field induced anisotropy of 139La spin-lattice relaxation rates in stripe ordered La1.875Ba0.125CuO4},
author = {S. -H. Baek and Gu, G. D. and Utz, Y. and Hucker, M. and Buchner, B. and Grafe, H. -J.},
abstractNote = {We report 139La nuclear magnetic resonance studies performed on a La1.875Ba0.125CuO4 single crystal. The data show that the structural phase transitions (high-temperature tetragonal → low-temperature orthorhombic → low-temperature tetragonal phase) are of the displacive type in this material. The 139La spin-lattice relaxation rate T–11 sharply upturns at the charge-ordering temperature TCO = 54 K, indicating that charge order triggers the slowing down of spin fluctuations. Detailed temperature and field dependencies of the T–11 below the spin-ordering temperature TSO=40 K reveal the development of enhanced spin fluctuations in the spin-ordered state for H ∥ [001], which are completely suppressed for large fields along the CuO2 planes. Lastly, our results shed light on the unusual spin fluctuations in the charge and spin stripe ordered lanthanum cuprates.},
doi = {10.1103/PhysRevB.92.155144},
url = {https://www.osti.gov/biblio/1235866}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 15,
volume = 92,
place = {United States},
year = {2015},
month = {10}
}

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Cited by: 5 works
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    Works referencing / citing this record:

    Cu nuclear magnetic resonance study of charge and spin stripe order in La 1.875 Ba 0.125 CuO 4
    journal, February 2017


    Unconventional charge order in a co-doped high-Tc superconductor
    journal, September 2016