Stripe magnetic order and field-induced quantum criticality in the perfect triangular-lattice antiferromagnet CsCeSe2

Xie, Tao1,2; Zhao, N.3; Gozel, S.4; Xing, Jie5; Avdoshenko, S. M.6; Taddei, K. M.2,7; Kolesnikov, A. I.2; Sanjeewa, L. D.5; Ma, Peiyue1; Harrison, N.8; dela Cruz, C.2; Wu, L.9,10; Sefat, Athena S.5; Chernyshev, A. L.11; Lauchli, A. M.4,12; Podlesnyak, A.2; Nikitin, S. E.13

2024-08-29

10.1103/PhysRevB.110.054445

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

The two-dimensional triangular-lattice antiferromagnet (TLAF) is a textbook example of frustrated magnetic systems. Despite its simplicity, the TLAF model exhibits a highly rich and complex magnetic phase diagram, featuring numerous distinct ground states that can be stabilized through frustrated next-nearest-neighbor couplings or anisotropy. In this paper, we report low-temperature magnetic properties of the TLAF material CsCeSe2. The inelastic neutron scattering (INS) together with specific heat measurements and density functional theory calculations of crystalline electric field suggest that the ground state of Ce ions is a Kramers doublet with strong easy-plane anisotropy. Elastic neutron scattering measurements demonstrate the presence of stripe-yz magnetic order that develops below TN = 0.35 K, with the zero-field ordered moment of mCe 0.65 mu B. Application of magnetic field first increases the ordering temperature by about 20% at the intermediate field region and eventually suppresses the stripe order in favor of the field-polarized ferromagnetic state via a continuous quantum phase transition (QPT). The field-induced response demonstrates sizable anisotropy for different in-plane directions, B H a and B 1 a, which indicates the presence of bond-dependent coupling in the spin Hamiltonian. We further show theoretically that the presence of anisotropic bond-dependent interactions can change the universality class of QPT for B H a and B 1 a.

SCI

英语

其他

National Natural Science Foundation of China[12304187] ; Open research fund of Songshan Lake Materials Laboratory[2023SLABFN30] ; Guangzhou Basic and Applied Basic Research Funds[2024A04J4024] ; Fundamental Research Funds for the Central Universities , Sun Yatsen University[23qnpy57] ; DOE Office of Science User Facility[CNMS2019-R18] ; U.S. Department of Energy, Office of Science, Basic Energy Sciences[DE-SC0021221]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001302039900001

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Sun Yat Sen Univ, Ctr Neutron Sci & Technol, Sch Phys, Guangdong Prov Key Lab Magnetoelectr Phys & Device, Guangzhou 510275, Guangdong, Peoples R China
2.Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA
3.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
4.Paul Scherrer Inst, Lab Theoret & Computat Phys, CH-5232 Villigen, Switzerland
5.Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
6.Leibniz Inst Festkorper & Werkstoff Forsch IFW Dre, Helmholtzstr 20, D-01069 Dresden, Germany
7.Argonne Natl Lab, Adv Photon Source, Lemont, IL 60439 USA
8.Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
9.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
10.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Guangdong, Peoples R China
11.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
12.Ecole Polytech Fed Lausanne EPFL, Inst Phys, CH-1015 Lausanne, Switzerland
13.Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland

Xie, Tao,Zhao, N.,Gozel, S.,et al. Stripe magnetic order and field-induced quantum criticality in the perfect triangular-lattice antiferromagnet CsCeSe2[J]. PHYSICAL REVIEW B,2024,110(5).

Xie, Tao.,Zhao, N..,Gozel, S..,Xing, Jie.,Avdoshenko, S. M..,...&Nikitin, S. E..(2024).Stripe magnetic order and field-induced quantum criticality in the perfect triangular-lattice antiferromagnet CsCeSe2.PHYSICAL REVIEW B,110(5).

Xie, Tao,et al."Stripe magnetic order and field-induced quantum criticality in the perfect triangular-lattice antiferromagnet CsCeSe2".PHYSICAL REVIEW B 110.5(2024).