Anisotropic magnetism and electronic structure of trigonal EuAl2Ge2 single crystals

Pakhira, Santanu; Kundu, Asish K.; Islam, Farhan; Tanatar, M. A.; Roy, Tufan; Heitmann, Thomas; Yilmaz, T.; Vescovo, E.; Tsujikawa, Masahito; Shirai, Masafumi; Prozorov, R.; Vaknin, David; Johnston, D. C.

doi:10.1103/physrevb.107.134439

Title: Anisotropic magnetism and electronic structure of trigonal EuAl₂Ge₂ single crystals

Journal Article · Fri Apr 28 00:00:00 EDT 2023 · Physical Review. B

DOI:https://doi.org/10.1103/physrevb.107.134439· OSTI ID:1972799

^[1]; Kundu, Asish K. ^[2]; Islam, Farhan ^[3];

^[3];

^[4]; Heitmann, Thomas ^[5]; Yilmaz, T. ^[6]; Vescovo, E. ^[6];

^[4];

^[4]; Prozorov, R. ^[3];

^[3];

^[3]

Ames Lab., and Iowa State Univ., Ames, IA (United States); Karlsruhe Inst. of Technology (KIT) (Germany)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Ames Lab., and Iowa State Univ., Ames, IA (United States)
Tohoku Univ., Sendai (Japan)
Univ. of Missouri, Columbia, MO (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

Understanding the interplay between magnetic and electronic degrees of freedom is of profound recent interest in different Eu-based magnetic topological materials. Here, we studied the magnetic and electronic properties of the layered Zintl-phase compound EuAl₂Ge₂ crystallizing in the trigonal CaAl₂Si₂-type structure. We report zero-field neutron diffraction, temperature T - and magnetic-field H-dependent magnetic susceptibility χ(T, H), isothermal magnetization M(T, H), heat capacity C_p(T, H), and electrical resistivity ρ(T, H) measurements, together with T-dependent angle-resolved photoemission spectroscopy (ARPES) measurements complemented with first-principle calculations. EuAl₂Ge₂ undergoes second-order A-type antiferromagnetic (AFM) ordering below T_N = 27.5(5) K, with the Eu moments (Eu²⁺, S = 7/2) aligned ferromagnetically in the ab plane while these layers are stacked antiferromagnetically along the c axis. The critical fields at which all moments become parallel to the field are 37.5(5) and 52.5(5) kOe for H ∥ ab and H ∥ c, respectively. The H = 0 magnetic structure consists of trigonal AFM domains associated with ab-plane magnetic anisotropy and a field-induced reorientation of the Eu spins in the domains is also evident at T = 2 K below the critical field H_c1 = 2.5(1) kOe. The ρ(T) measurements reveal metallic behavior transforming into a slight resistivity increase on cooling towards T_N. A pronounced loss of spin-disorder scattering is observed below T_N. The ARPES results show that EuAl₂Ge₂ is metallic both above and below T_N, and the Fermi surface is anisotropic with two hole pockets at the zone center and one small electron pocket at each M point. In the AFM phase, we directly observe folded bands in ARPES due to the doubling of the magnetic unit cell along the c axis with an enhancement of quasiparticle weight due to the complex change in the coupling between the magnetic moments and itinerant electrons on cooling below T_N. The observed electronic structure is well reproduced by first-principle calculations, which also predict the presence of nontrivial electronic states near the Fermi level in the AFM phase with Z₂ topological numbers 1;(000)

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

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

Grant/Contract Number:: AC02-07CH11358; SC0012704

OSTI ID:: 1972799

Report Number(s):: IS-J 11,057; TRN: US2313833

Journal Information:: Physical Review. B, Vol. 107, Issue 13; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (53)

Generalized Gradient Approximation Made Simple Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868 https://doi.org/10.1103/PhysRevLett.77.3865	journal	October 1996
Indirect chiral magnetic exchange through Dzyaloshinskii–Moriya-enhanced RKKY interactions in manganese oxide chains on Ir(100) Schmitt, Martin; Moras, Paolo; Bihlmayer, Gustav Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-10515-3	journal	June 2019
Topological electronic structure of YbMg2Bi2 and CaMg2Bi2 Kundu, Asish K.; Roy, Tufan; Pakhira, Santanu npj Quantum Materials, Vol. 7, Issue 1 https://doi.org/10.1038/s41535-022-00474-2	journal	June 2022
Projector augmented-wave method Blöchl, P. E. Physical Review B, Vol. 50, Issue 24, p. 17953-17979 https://doi.org/10.1103/PhysRevB.50.17953	journal	December 1994
Dirac Surface States in Intrinsic Magnetic Topological Insulators EuSn 2 As 2 and MnBi 2 n Te 3 n + 1 Li, Hang; Gao, Shun-Ye; Duan, Shao-Feng Physical Review X, Vol. 9, Issue 4 https://doi.org/10.1103/PhysRevX.9.041039	journal	November 2019
An updated version of wannier90: A tool for obtaining maximally-localised Wannier functions Mostofi, Arash A.; Yates, Jonathan R.; Pizzi, Giovanni Computer Physics Communications, Vol. 185, Issue 8 https://doi.org/10.1016/j.cpc.2014.05.003	journal	August 2014
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
Strong correlations and spin-density-wave phase induced by a massive spectral weight redistribution in $α {-Fe}_{1.06} Te$ Zhang, Y.; Chen, F.; He, C. Physical Review B, Vol. 82, Issue 16 https://doi.org/10.1103/PhysRevB.82.165113	journal	October 2010
Manipulating magnetism in the topological semimetal ${EuCd}_{2} {As}_{2}$ Jo, Na Hyun; Kuthanazhi, Brinda; Wu, Yun Physical Review B, Vol. 101, Issue 14 https://doi.org/10.1103/PhysRevB.101.140402	journal	April 2020
Visualizing band selective enhancement of quasiparticle lifetime in a metallic ferromagnet Jo, Na Hyun; Wu, Yun; Trevisan, Thaís V. Nature Communications, Vol. 12, Issue 1 https://doi.org/10.1038/s41467-021-27277-6	journal	December 2021
Electrons and Phonons Ziman, J. M. https://doi.org/10.1093/acprof:oso/9780198507796.001.0001	book	January 2001
From ultrasoft pseudopotentials to the projector augmented-wave method Kresse, G.; Joubert, D. Physical Review B, Vol. 59, Issue 3, p. 1758-1775 https://doi.org/10.1103/PhysRevB.59.1758	journal	January 1999
Magnetic crystalline-symmetry-protected axion electrodynamics and field-tunable unpinned Dirac cones in EuIn2As2 Riberolles, S. X. M.; Trevisan, T. V.; Kuthanazhi, B. Nature Communications, Vol. 12, Issue 1 https://doi.org/10.1038/s41467-021-21154-y	journal	February 2021
Magnetic field induced ab -plane rotation of the Eu magnetic moments in trigonal EuMg2Bi2 and EuMg2Sb2 single crystals below their Néel temperatures Pakhira, Santanu; Lee, Yongbin; Ke, Liqin Physical Review B, Vol. 106, Issue 18 https://doi.org/10.1103/PhysRevB.106.184423	journal	November 2022
Crystal Defect Doping on Antiferromagnetic Topological Insulator Candidate EuMg₂Bi₂ Marshall, Madalynn; Xie, Weiwei The Journal of Physical Chemistry C, Vol. 126, Issue 1 https://doi.org/10.1021/acs.jpcc.1c08980	journal	December 2021
Density-functional theory and strong interactions: Orbital ordering in Mott-Hubbard insulators Liechtenstein, A. I.; Anisimov, V. I.; Zaanen, J. Physical Review B, Vol. 52, Issue 8 https://doi.org/10.1103/PhysRevB.52.R5467	journal	August 1995
The Zintl phases A In ₂ As ₂ (A = Ca, Sr, Ba): new topological insulators and thermoelectric material candidates Ogunbunmi, Michael O.; Baranets, Sviatoslav; Childs, Amanda B. Dalton Transactions, Vol. 50, Issue 26 https://doi.org/10.1039/D1DT01521D	journal	January 2021
Antiferro- and metamagnetism in the S=7/2 hollandite analog EuGa2Sb2 Berry, Tanya; Parkin, Sean R.; McQueen, Tyrel M. Physical Review Materials, Vol. 5, Issue 11 https://doi.org/10.1103/PhysRevMaterials.5.114401	journal	November 2021
Magnetic and electronic structures of antiferromagnetic topological material candidate EuMg ₂ Bi ₂ Marshall, Madalynn; Pletikosić, Ivo; Yahyavi, Mohammad Journal of Applied Physics, Vol. 129, Issue 3 https://doi.org/10.1063/5.0035703	journal	January 2021
Large magnetic cooling power involving frustrated antiferromagnetic spin-glass state in $R_{2} {NiSi}_{3} (R = Gd, Er)$ Pakhira, Santanu; Mazumdar, Chandan; Ranganathan, R. Physical Review B, Vol. 94, Issue 10 https://doi.org/10.1103/PhysRevB.94.104414	journal	September 2016
Recent progress and future challenges on thermoelectric Zintl materials Shuai, Jing; Mao, Jun; Song, Shaowei Materials Today Physics, Vol. 1 https://doi.org/10.1016/j.mtphys.2017.06.003	journal	June 2017
Low-field magnetic anomalies in single crystals of the A-type square-lattice antiferromagnet EuGa4 Pakhira, Santanu; Johnston, D. C. Physical Review B, Vol. 107, Issue 2 https://doi.org/10.1103/PhysRevB.107.024421	journal	January 2023
Fermi Surface Reconstruction in the CDW State of ${C e T e}_{3}$ Observed by Photoemission Brouet, V.; Yang, W. L.; Zhou, X. J. Physical Review Letters, Vol. 93, Issue 12 https://doi.org/10.1103/PhysRevLett.93.126405	journal	September 2004
Topological semimetal to insulator quantum phase transition in the Zintl compounds $B a_{2} X (X = Si, Ge)$ Zhu, Ziming; Li, Mingda; Li, Ju Physical Review B, Vol. 94, Issue 15 https://doi.org/10.1103/PhysRevB.94.155121	journal	October 2016
Thermoelectric transport properties of CaMg $_{2}$ Bi $_{2}$ , EuMg $_{2}$ Bi $_{2}$ , and YbMg $_{2}$ Bi $_{2}$ May, Andrew F.; McGuire, Michael A.; Singh, David J. Physical Review B, Vol. 85, Issue 3 https://doi.org/10.1103/PhysRevB.85.035202	journal	January 2012
Thickness-Dependent Magnetism and Topological Properties of EuSn₂As₂ Lv, Xiaodong; Chen, Xuejiao; Zhang, Bingwen ACS Applied Electronic Materials, Vol. 4, Issue 7 https://doi.org/10.1021/acsaelm.2c00414	journal	June 2022
Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd ₂ As ₂ Ma, J. -Z.; Nie, S. M.; Yi, C. J. Science Advances, Vol. 5, Issue 7 https://doi.org/10.1126/sciadv.aaw4718	journal	July 2019
Site preferences and bond length differences in CaAl2Si2-type Zintl compounds Zheng, Chong.; Hoffmann, Roald.; Nesper, Reinhard. Journal of the American Chemical Society, Vol. 108, Issue 8 https://doi.org/10.1021/ja00268a027	journal	April 1986
A -type antiferromagnetic order in the Zintl-phase insulator EuZn2P2 Berry, Tanya; Stewart, Veronica J.; Redemann, Benjamin W. Y. Physical Review B, Vol. 106, Issue 5 https://doi.org/10.1103/PhysRevB.106.054420	journal	August 2022
FermiSurfer: Fermi-surface viewer providing multiple representation schemes Kawamura, Mitsuaki Computer Physics Communications, Vol. 239 https://doi.org/10.1016/j.cpc.2019.01.017	journal	June 2019
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
Emergence of Nontrivial Low‐Energy Dirac Fermions in Antiferromagnetic EuCd ₂ As ₂ Ma, Junzhang; Wang, Han; Nie, Simin Advanced Materials, Vol. 32, Issue 14 https://doi.org/10.1002/adma.201907565	journal	April 2020
Upper critical field of high-quality single crystals of KFe $_{2}$ As $_{2}$ Liu, Yong; Tanatar, M. A.; Kogan, V. G. Physical Review B, Vol. 87, Issue 13 https://doi.org/10.1103/PhysRevB.87.134513	journal	April 2013
A-type antiferromagnetic order in semiconducting EuMg2Sb2 single crystals Pakhira, Santanu; Islam, Farhan; O'Leary, Evan Physical Review B, Vol. 106, Issue 2 https://doi.org/10.1103/PhysRevB.106.024418	journal	July 2022
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set Kresse, G.; Furthmüller, J. Physical Review B, Vol. 54, Issue 16, p. 11169-11186 https://doi.org/10.1103/PhysRevB.54.11169	journal	October 1996
Electronic structure and transport in thermoelectric compounds AZn2Sb2 (A = Sr, Ca, Yb, Eu) Toberer, Eric S.; May, Andrew F.; Melot, Brent C. Dalton Trans., Vol. 39, Issue 4 https://doi.org/10.1039/B914172C	journal	January 2010
Structure and properties of the compounds LnAl2X2 (Ln=Eu, Yb; X=Si, Ge) Kranenberg, Christian; Johrendt, Dirk; Mewis, Albrecht Solid State Sciences, Vol. 2, Issue 2 https://doi.org/10.1016/S1293-2558(00)00135-7	journal	May 2000
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
Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet Kurumaji, Takashi; Nakajima, Taro; Hirschberger, Max Science, Vol. 365, Issue 6456 https://doi.org/10.1126/science.aau0968	journal	August 2019
Anisotropy of the magnetic and transport properties of EuZn2As2 Wang, Zhi-Cheng; Been, Emily; Gaudet, Jonathan Physical Review B, Vol. 105, Issue 16 https://doi.org/10.1103/PhysRevB.105.165122	journal	April 2022
Field-induced topological Hall effect in antiferromagnetic axion insulator candidate EuIn2As2 Yan, J.; Jiang, Z. Z.; Xiao, R. C. Physical Review Research, Vol. 4, Issue 1 https://doi.org/10.1103/PhysRevResearch.4.013163	journal	February 2022
Higher-Order Topology of the Axion Insulator ${EuIn}_{2} {As}_{2}$ Xu, Yuanfeng; Song, Zhida; Wang, Zhijun Physical Review Letters, Vol. 122, Issue 25 https://doi.org/10.1103/PhysRevLett.122.256402	journal	June 2019
Different Topological Quantum States in Ternary Zintl compounds: BaCaX (X = Si, Ge, Sn and Pb) Wang, Lin-Lin; Kaminski, Adam; Canfield, Paul C. The Journal of Physical Chemistry C, Vol. 122, Issue 1 https://doi.org/10.1021/acs.jpcc.7b11111	journal	December 2017
Neue Pnictide im CaAl2Si2-Typ und dessen Existenzgebiet/New Pnictides with the CaAl2Si2 Type Structure and the Stability Range of this Type Wartenberg, Franziska; Kranenberg, Christian; Pocha, Regina Zeitschrift für Naturforschung B, Vol. 57, Issue 11 https://doi.org/10.1515/znb-2002-1112	journal	November 2002
$A$ -type antiferromagnetic order and magnetic phase diagram of the trigonal Eu spin- $\frac{7}{2}$ triangular-lattice compound ${EuSn}_{2} {As}_{2}$ Pakhira, Santanu; Tanatar, M. A.; Heitmann, Thomas Physical Review B, Vol. 104, Issue 17 https://doi.org/10.1103/PhysRevB.104.174427	journal	November 2021
WannierTools: An open-source software package for novel topological materials Wu, QuanSheng; Zhang, ShengNan; Song, Hai-Feng Computer Physics Communications, Vol. 224 https://doi.org/10.1016/j.cpc.2017.09.033	journal	March 2018
Magnetic and transport anomalies in the compounds, RCuAs2 (R=Pr, Nd, Sm, Gd, Tb, Dy, Ho, and Er) Sengupta, Kausik; Rayaprol, S.; Sampathkumaran, E. V. Physica B: Condensed Matter, Vol. 348, Issue 1-4 https://doi.org/10.1016/j.physb.2004.01.152	journal	May 2004
Electronic and magnetic properties of the topological semimetal SmMg2Bi2 Kundu, Asish K.; Pakhira, Santanu; Roy, Tufan Physical Review B, Vol. 106, Issue 24 https://doi.org/10.1103/PhysRevB.106.245131	journal	December 2022
Magnetic, thermal, and electronic-transport properties of ${EuMg}_{2} {Bi}_{2}$ single crystals Pakhira, Santanu; Tanatar, M. A.; Johnston, D. C. Physical Review B, Vol. 101, Issue 21 https://doi.org/10.1103/PhysRevB.101.214407	journal	June 2020
Coupling of magnetic order and charge transport in the candidate Dirac semimetal ${EuCd}_{2} {As}_{2}$ Rahn, M. C.; Soh, J. -R.; Francoual, S. Physical Review B, Vol. 97, Issue 21 https://doi.org/10.1103/PhysRevB.97.214422	journal	June 2018
Engineering magnetic topological insulators in Eu5M2X6 Zintl compounds Varnava, Nicodemos; Berry, Tanya; McQueen, Tyrel M. Physical Review B, Vol. 105, Issue 23 https://doi.org/10.1103/PhysRevB.105.235128	journal	June 2022
Zero-field magnetic ground state of ${EuMg}_{2} {Bi}_{2}$ Pakhira, Santanu; Heitmann, Thomas; Riberolles, S. X. M. Physical Review B, Vol. 103, Issue 2 https://doi.org/10.1103/PhysRevB.103.024408	journal	January 2021
Magnetic phase transitions in Eu( ${Co}_{1 - x} {Ni}_{x})_{2 - y} {As}_{2}$ single crystals Sangeetha, N. S.; Pakhira, Santanu; Ryan, D. H. Physical Review Materials, Vol. 4, Issue 8 https://doi.org/10.1103/PhysRevMaterials.4.084407	journal	August 2020

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