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Title: NMR studies of the incommensurate helical antiferromagnet EuCo 2 P 2 : Determination of antiferromagnetic propagation vector

Recently, Q.-P. Ding et al. reported that their nuclear magnetic resonance (NMR) study on EuCo 2As 2 successfully characterized the antiferromagnetic (AFM) propagation vector of the incommensurate helix AFM state, showing that NMR is a unique tool for determination of the spin structures in incommensurate helical AFMs. Motivated by this work, we have carried out 153Eu, 31P, and 59Co NMR measurements on the helical antiferromagnet EuCo 2P 2 with an AFM ordering temperature T N = 66.5 K. An incommensurate helical AFM structure was clearly confirmed by 153Eu and 31P NMR spectra on single-crystalline EuCo 2P 2 in zero magnetic field at 1.6 K and its external magnetic field dependence. Furthermore, based on 59Co NMR data in both the paramagnetic and incommensurate AFM states, we have determined the model-independent value of the AFM propagation vector k = (0,0,0.73±0.09)2π/c, where c is the c-axis lattice parameter. As a result, the temperature dependence of k is also discussed.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [3] ;  [3] ;  [3] ;  [2] ;  [2]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States); Univ. of the Ryukyus, Okinawa (Japan)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  3. Univ. of the Ryukyus, Okinawa (Japan)
Publication Date:
Report Number(s):
IS-J-9413
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1702790
Grant/Contract Number:
AC02-07CH11358; JP15K21732; JP15H05885; JP16H01078
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 2; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Ames Lab., Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1374738
Alternate Identifier(s):
OSTI ID: 1368613

Higa, Nonoka, Ding, Qing -Ping, Yogi, Mamoru, Sangeetha, N. S., Hedo, Masato, Nakama, Takao, Onuki, Yoshichika, Johnston, David C., and Furukawa, Yuji. NMR studies of the incommensurate helical antiferromagnet EuCo2P2: Determination of antiferromagnetic propagation vector. United States: N. p., Web. doi:10.1103/PhysRevB.96.024405.
Higa, Nonoka, Ding, Qing -Ping, Yogi, Mamoru, Sangeetha, N. S., Hedo, Masato, Nakama, Takao, Onuki, Yoshichika, Johnston, David C., & Furukawa, Yuji. NMR studies of the incommensurate helical antiferromagnet EuCo2P2: Determination of antiferromagnetic propagation vector. United States. doi:10.1103/PhysRevB.96.024405.
Higa, Nonoka, Ding, Qing -Ping, Yogi, Mamoru, Sangeetha, N. S., Hedo, Masato, Nakama, Takao, Onuki, Yoshichika, Johnston, David C., and Furukawa, Yuji. 2017. "NMR studies of the incommensurate helical antiferromagnet EuCo2P2: Determination of antiferromagnetic propagation vector". United States. doi:10.1103/PhysRevB.96.024405. https://www.osti.gov/servlets/purl/1374738.
@article{osti_1374738,
title = {NMR studies of the incommensurate helical antiferromagnet EuCo2P2: Determination of antiferromagnetic propagation vector},
author = {Higa, Nonoka and Ding, Qing -Ping and Yogi, Mamoru and Sangeetha, N. S. and Hedo, Masato and Nakama, Takao and Onuki, Yoshichika and Johnston, David C. and Furukawa, Yuji},
abstractNote = {Recently, Q.-P. Ding et al. reported that their nuclear magnetic resonance (NMR) study on EuCo2As2 successfully characterized the antiferromagnetic (AFM) propagation vector of the incommensurate helix AFM state, showing that NMR is a unique tool for determination of the spin structures in incommensurate helical AFMs. Motivated by this work, we have carried out 153Eu, 31P, and 59Co NMR measurements on the helical antiferromagnet EuCo2P2 with an AFM ordering temperature TN = 66.5 K. An incommensurate helical AFM structure was clearly confirmed by 153Eu and 31P NMR spectra on single-crystalline EuCo2P2 in zero magnetic field at 1.6 K and its external magnetic field dependence. Furthermore, based on 59Co NMR data in both the paramagnetic and incommensurate AFM states, we have determined the model-independent value of the AFM propagation vector k = (0,0,0.73±0.09)2π/c, where c is the c-axis lattice parameter. As a result, the temperature dependence of k is also discussed.},
doi = {10.1103/PhysRevB.96.024405},
journal = {Physical Review B},
number = 2,
volume = 96,
place = {United States},
year = {2017},
month = {7}
}