NMR studies of the incommensurate helical antiferromagnet EuCo2P2: Determination of antiferromagnetic propagation vector

Higa, Nonoka; Ding, Qing -Ping; Yogi, Mamoru; Sangeetha, N. S.; Hedo, Masato; Nakama, Takao; Onuki, Yoshichika; Johnston, David C.; Furukawa, Yuji

doi:10.1103/PhysRevB.96.024405

Title: NMR studies of the incommensurate helical antiferromagnet ${EuCo}_{2} P_{2}$ : Determination of antiferromagnetic propagation vector

Journal Article · Thu Jul 06 00:00:00 EDT 2017 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.96.024405· OSTI ID:1374738

Higa, Nonoka ^[1]; Ding, Qing -Ping ^[2]; Yogi, Mamoru ^[3]; Sangeetha, N. S. ^[2]; Hedo, Masato ^[3]; Nakama, Takao ^[3]; Onuki, Yoshichika ^[3]; Johnston, David C. ^[2]; Furukawa, Yuji ^[2]

Ames Lab. and Iowa State Univ., Ames, IA (United States); Univ. of the Ryukyus, Okinawa (Japan)
Ames Lab. and Iowa State Univ., Ames, IA (United States)
Univ. of the Ryukyus, Okinawa (Japan)

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 T_N = 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.

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Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11358; JP15K21732; JP15H05885; JP16H01078

OSTI ID:: 1374738

Alternate ID(s):: OSTI ID: 1368613

Report Number(s):: IS-J-9413; PRBMDO; TRN: US1702790

Journal Information:: Physical Review B, Vol. 96, Issue 2; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 8 works

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References (18)

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