EuCo2P2: A Model Molecular-Field Helical Heisenberg Antiferromagnet

Sangeetha, N. S.; Cuervo-Reyes, Eduardo; Pandey, Abhishek; Johnston, D. C.

doi:10.1103/PhysRevB.94.014422

Title: EuCo₂P₂: A Model Molecular-Field Helical Heisenberg Antiferromagnet

Journal Article · Tue Jul 19 00:00:00 EDT 2016 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.94.014422· OSTI ID:1311820

Sangeetha, N. S. ^[1]; Cuervo-Reyes, Eduardo ^[2]; Pandey, Abhishek ^[1]; Johnston, D. C. ^[1]

Ames Lab. and Iowa State Univ., Ames, IA (United States)
Swiss Federal Lab. for Materials Science and Technology (Empa), Dubendorf (Switzerland); Federal Inst. of Technology, Zurich (Switzerland)

The metallic compound EuCo₂P₂ with the body-centered tetragonal ThCr₂Si₂ structure containing Eu spins-7/2 was previously shown from single-crystal neutron diffraction measurements to exhibit a helical antiferromagnetic (AFM) structure below T_N=66.5 K with the helix axis along the c axis and with the ordered moments aligned within the ab plane. Here we report crystallography, electrical resistivity, heat capacity, magnetization, and magnetic susceptibility measurements on single crystals of this compound. We demonstrate that EuCo₂P₂ is a model molecular-field helical Heisenberg antiferromagnet from comparisons of the anisotropic magnetic susceptibility χ, high-field magnetization, and magnetic heat capacity of EuCo₂P₂ single crystals at temperature T≤TN with the predictions of our recent formulation of molecular-field theory. Values of the Heisenberg exchange interactions between the Eu spins are derived from the data. The low-T magnetic heat capacity ~T³ arising from spin-wave excitations with no anisotropy gap is calculated and found to be comparable to the lattice heat capacity. The density of states at the Fermi energy of EuCo₂P₂ and the related compound BaCo₂P₂ are found from the heat capacity data to be large, 10 and 16 states/eV per formula unit for EuCo₂P₂ and BaCo₂P₂, respectively. These values are enhanced by a factor of ~2.5 above those found from DFT electronic structure calculations for the two compounds. Additionally, the calculations also find ferromagnetic Eu–Eu exchange interactions within the ab plane and AFM interactions between Eu spins in nearest- and next-nearest planes, in agreement with the MFT analysis of χ_ab(T≤TN).

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Research Organization:: Ames Lab., Ames, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1311820

Alternate ID(s):: OSTI ID: 1264795

Report Number(s):: IS-J-8865; PRBMDO

Journal Information:: Physical Review B, Vol. 94, Issue 1; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 29 works

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References (38)

A Transition from Localized to Strongly Correlated Electron Behavior and Mixed Valence Driven by Physical or Chemical Pressure in ACo ₂ As ₂ (A = Eu and Ca) Tan, Xiaoyan; Fabbris, Gilberto; Haskel, Daniel Journal of the American Chemical Society, Vol. 138, Issue 8 https://doi.org/10.1021/jacs.5b12659	journal	February 2016
Crystallographic, electronic, thermal, and magnetic properties of single-crystal SrCo $_{2}$ As $_{2}$ Pandey, Abhishek; Quirinale, D. G.; Jayasekara, W. Physical Review B, Vol. 88, Issue 1 https://doi.org/10.1103/PhysRevB.88.014526	journal	July 2013
Mössbauer and magnetic susceptibility investigations of strontium, lanthanum and europium transition metal phosphides with ThCr2Si2 type structure Mörsen, E.; Mosel, B. D.; Müller-Warmuth, W. Journal of Physics and Chemistry of Solids, Vol. 49, Issue 7 https://doi.org/10.1016/0022-3697(88)90030-3	journal	January 1988
Magnetic dipole interactions in crystals Johnston, David C. Physical Review B, Vol. 93, Issue 1 https://doi.org/10.1103/PhysRevB.93.014421	journal	January 2016
Structural, thermal, magnetic, and electronic transport properties of the LaNi $_{2}$ (Ge $_{1 - x}$ P $_{x}$ ) $_{2}$ system Goetsch, R. J.; Anand, V. K.; Pandey, Abhishek Physical Review B, Vol. 85, Issue 5 https://doi.org/10.1103/PhysRevB.85.054517	journal	February 2012
Ternary lanthanoid-transition metal pnictides with ThCr2Si2-type structure Marchand, Roger; Jeitschko, Wolfgang Journal of Solid State Chemistry, Vol. 24, Issue 3-4 https://doi.org/10.1016/0022-4596(78)90026-9	journal	April 1978
Magnetic Susceptibility of Collinear and Noncollinear Heisenberg Antiferromagnets Johnston, D. C. Physical Review Letters, Vol. 109, Issue 7 https://doi.org/10.1103/PhysRevLett.109.077201	journal	August 2012
Density-functional exchange-energy approximation with correct asymptotic behavior Becke, A. D. Physical Review A, Vol. 38, Issue 6 https://doi.org/10.1103/PhysRevA.38.3098	journal	September 1988
Metal-insulator transitions Imada, Masatoshi; Fujimori, Atsushi; Tokura, Yoshinori Reviews of Modern Physics, Vol. 70, Issue 4, p. 1039-1263 https://doi.org/10.1103/RevModPhys.70.1039	journal	October 1998
Single-ion anisotropy in the gadolinium pyrochlores studied by electron paramagnetic resonance Glazkov, V. N.; Zhitomirsky, M. E.; Smirnov, A. I. Physical Review B, Vol. 72, Issue 2 https://doi.org/10.1103/PhysRevB.72.020409	journal	July 2005
Recent advances in magnetic structure determination by neutron powder diffraction Rodríguez-Carvajal, Juan Physica B: Condensed Matter, Vol. 192, Issue 1-2 https://doi.org/10.1016/0921-4526(93)90108-I	journal	October 1993
Pressure-induced Transition of the Sublattice Magnetization in ${EuCo}_{2} P_{2}$ : Change from Local Moment $Eu (4 f)$ to Itinerant $Co (3 d)$ Magnetism Chefki, M.; Abd-Elmeguid, M. M.; Micklitz, H. Physical Review Letters, Vol. 80, Issue 4 https://doi.org/10.1103/PhysRevLett.80.802	journal	January 1998
Unified molecular field theory for collinear and noncollinear Heisenberg antiferromagnets Johnston, David C. Physical Review B, Vol. 91, Issue 6 https://doi.org/10.1103/PhysRevB.91.064427	journal	February 2015
Effect of pressure on thermopower and resistivity of EuCo ₂ P ₂ Nakama, T.; Yoshida, T.; Ohno, A. Journal of Physics: Conference Series, Vol. 200, Issue 3 https://doi.org/10.1088/1742-6596/200/3/032050	journal	January 2010
Magnetic phase diagram of Sr _{1- x} Ca _x Co ₂ P ₂ Sugiyama, J.; Nozaki, H.; Umegaki, I. Journal of Physics: Conference Series, Vol. 551 https://doi.org/10.1088/1742-6596/551/1/012010	journal	December 2014
Fast Calculation of Electrostatics in Crystals and Large Molecules Delley, Bernard The Journal of Physical Chemistry, Vol. 100, Issue 15 https://doi.org/10.1021/jp952713n	journal	January 1996
A new one-parameter progressive Colle–Salvetti-type correlation functional Tsuneda, Takao; Suzumura, Toshihisa; Hirao, Kimihiko The Journal of Chemical Physics, Vol. 110, Issue 22 https://doi.org/10.1063/1.479012	journal	June 1999
Electron spin resonance study of the single-ion anisotropy in the pyrochlore antiferromagnet Gd ₂ Sn ₂ O ₇ Glazkov, V. N.; Smirnov, A. I.; Sanchez, J. P. Journal of Physics: Condensed Matter, Vol. 18, Issue 7 https://doi.org/10.1088/0953-8984/18/7/015	journal	February 2006
Formation of collapsed tetragonal phase in EuCo ₂ As ₂ under high pressure Bishop, Matthew; Uhoya, Walter; Tsoi, Georgiy Journal of Physics: Condensed Matter, Vol. 22, Issue 42 https://doi.org/10.1088/0953-8984/22/42/425701	journal	October 2010
De Haas–van Alphen Effect and Fermi Surface Properties in Nearly Ferromagnet SrCo ₂ P ₂ Teruya, Atsushi; Nakamura, Ai; Takeuchi, Tetsuya Journal of the Physical Society of Japan, Vol. 83, Issue 11 https://doi.org/10.7566/JPSJ.83.113702	journal	November 2014
L'hypothèse du champ moléculaire et la propriété ferromagnétique Weiss, Pierre Journal de Physique Théorique et Appliquée, Vol. 6, Issue 1 https://doi.org/10.1051/jphystap:019070060066100	journal	January 1907
First-order phase transitions in EuCo $_{2}$ P $_{2}$ and SrNi $_{2}$ P $_{2}$ Huhnt, C.; Schlabitz, W.; Wurth, A. Physical Review B, Vol. 56, Issue 21 https://doi.org/10.1103/PhysRevB.56.13796	journal	December 1997
Crystal growth and physical properties of SrCu $_{2}$ As $_{2}$ , SrCu $_{2}$ Sb $_{2}$ , and BaCu $_{2}$ Sb $_{2}$ Anand, V. K.; Perera, P. Kanchana; Pandey, Abhishek Physical Review B, Vol. 85, Issue 21 https://doi.org/10.1103/PhysRevB.85.214523	journal	June 2012
Magnetic properties of single crystal EuCo ₂ As ₂ Ballinger, Jared; Wenger, Lowell E.; Vohra, Yogesh K. Journal of Applied Physics, Vol. 111, Issue 7 https://doi.org/10.1063/1.3671410	journal	April 2012
Antiferromagnetism in ${EuCu}_{2} {As}_{2}$ and ${EuCu}_{1.82} {Sb}_{2}$ single crystals Anand, V. K.; Johnston, D. C. Physical Review B, Vol. 91, Issue 18 https://doi.org/10.1103/PhysRevB.91.184403	journal	May 2015
On the Theory of Antiferromagnetism Van Vleck, J. H. The Journal of Chemical Physics, Vol. 9, Issue 1 https://doi.org/10.1063/1.1750830	journal	January 1941
Electronic structure calculations with dynamical mean-field theory Kotliar, G.; Savrasov, S. Y.; Haule, K. Reviews of Modern Physics, Vol. 78, Issue 3 https://doi.org/10.1103/RevModPhys.78.865	journal	August 2006
A Neutron diffraction study of the magnetic structure of EuCo2P2 Reehuis, M.; Jeitschko, W.; Möller, M. H. Journal of Physics and Chemistry of Solids, Vol. 53, Issue 5 https://doi.org/10.1016/0022-3697(92)90208-U	journal	May 1992
Interlayer bonding in compounds with the ${ThCr}_{2} {Si}_{2}$ -type structure: Insight on the ferromagnetism of ${SrCo}_{2} {({Ge}_{1 - x} P_{x})}_{2}$ from electronic structure calculations Cuervo-Reyes, E.; Nesper, R. Physical Review B, Vol. 90, Issue 6 https://doi.org/10.1103/PhysRevB.90.064416	journal	August 2014
Helical antiferromagnetic ordering in ${Lu}_{1 - x} {Sc}_{x} MnSi$ Goetsch, R. J.; Anand, V. K.; Johnston, D. C. Physical Review B, Vol. 90, Issue 6 https://doi.org/10.1103/PhysRevB.90.064415	journal	August 2014
Pressure-induced collapsed-tetragonal phase in ${SrCo}_{2} {As}_{2}$ Jayasekara, W. T.; Kaluarachchi, U. S.; Ueland, B. G. Physical Review B, Vol. 92, Issue 22 https://doi.org/10.1103/PhysRevB.92.224103	journal	December 2015
A scattering theoretic approach to scalar relativistic corrections on bonding Delley, B. International Journal of Quantum Chemistry, Vol. 69, Issue 3 https://doi.org/10.1002/(SICI)1097-461X(1998)69:3%3C423::AID-QUA19%3E3.0.CO;2-2	journal	January 1998
Physical properties of metallic antiferromagnetic ${CaCo}_{1.86}$ ${As}_{2}$ single crystals Anand, V. K.; Dhaka, R. S.; Lee, Y. Physical Review B, Vol. 89, Issue 21 https://doi.org/10.1103/PhysRevB.89.214409	journal	June 2014
Magnetization Process of a Screw Spin System. II Kitano, Yoshiharu; Nagamiya, Takeo Progress of Theoretical Physics, Vol. 31, Issue 1 https://doi.org/10.1143/PTP.31.1	journal	January 1964
A New Type of Antiferromagnetic Structure in the Rutile Type Crystal Yoshimori, Akio Journal of the Physical Society of Japan, Vol. 14, Issue 6 https://doi.org/10.1143/JPSJ.14.807	journal	June 1959
Superconductivity and the effects of pressure and structure in single-crystalline ${SrNi}_{2} P_{2}$ Ronning, F.; Bauer, E. D.; Park, T. Physical Review B, Vol. 79, Issue 13 https://doi.org/10.1103/PhysRevB.79.134507	journal	April 2009
Magnetic exchange interactions in ${BaMn}_{2} {As}_{2}$ : A case study of the $J_{1}$ - $J_{2}$ - $J_{c}$ Heisenberg model Johnston, D. C.; McQueeney, R. J.; Lake, B. Physical Review B, Vol. 84, Issue 9 https://doi.org/10.1103/PhysRevB.84.094445	journal	September 2011
Demagnetizing factors for rectangular ferromagnetic prisms Aharoni, Amikam Journal of Applied Physics, Vol. 83, Issue 6 https://doi.org/10.1063/1.367113	journal	March 1998

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Reply to “Comment on ‘Magnetic structure and magnetization of $z$ -axis helical Heisenberg antiferromagnets with XY anisotropy in high magnetic fields transverse to the helix axis at zero temperature’ ” Johnston, David C. Physical Review B, Vol. 101, Issue 2 https://doi.org/10.1103/physrevb.101.026402	journal	January 2020

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