Magnetic response near the critical concentration for ferromagnetism: Linear and nonlinear susceptibility in concentrated spin glasses

1987 ◽  
Vol 61 (8) ◽  
pp. 3633-3635 ◽  
Author(s):  
P. Mazumdar ◽  
S. M. Bhagat
Keyword(s):  
Spin Glasses ◽  
Critical Concentration ◽  
Nonlinear Susceptibility ◽  
Magnetic Response ◽  
Linear And Nonlinear

scholarly journals Anomalous and anisotropic nonlinear susceptibility in the proximate Kitaev magnet α-RuCl3

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Ludwig Holleis ◽  
Joseph C. Prestigiacomo ◽  
Zhijie Fan ◽  
Satoshi Nishimoto ◽  
Michael Osofsky ◽  
...  
Keyword(s):  
Low Temperatures ◽  
High Field ◽  
Magnetic Order ◽  
Exact Diagonalization ◽  
Nonlinear Susceptibility ◽  
Magnetic Response ◽  
Leading Order ◽  
Rapid Rise ◽  
Quadratic Response ◽  
Antiferromagnetic Behavior

AbstractThe leading order nonlinear (NL) susceptibility, χ3, in a paramagnet is negative and diverges as T → 0. This divergence is destroyed when spins correlate and the NL response provides unique insights into magnetic order. Dimensionality, exchange interaction, and preponderance of quantum effects all imprint their signatures in the NL magnetic response. Here, we study the NL susceptibilities in the proximate Kitaev magnet α-RuCl3, which differs from the expected antiferromagnetic behavior. For T < Tc = 7.5 K and field B in the ab-plane, we obtain contrasting NL responses in low (<2 T) and high field regions. For low fields, the NL behavior is dominated by a quadratic response (positive χ2), which shows a rapid rise below Tc. This large χ2 > 0 implies a broken sublattice symmetry of magnetic order at low temperatures. Classical Monte Carlo (CMC) simulations in the standard K − H − Γ model secure such a quadratic B dependence of M, only for T ≈ Tc with χ2 being zero as T → 0. It is also zero for all temperatures in exact diagonalization calculations. On the other hand, we find an exclusive cubic term (χ3) that describes the high field NL behavior well. χ3 is large and positive both below and above Tc crossing zero only for T > 50 K. In contrast, for B ∥ c-axis, no separate low/high field behaviors are measured and only a much smaller χ3 is apparent.

scholarly journals Specific heat and nonlinear susceptibility in spin glasses with random fields

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
M. V. Romitti ◽  
F. M. Zimmer ◽  
C. V. Morais ◽  
S. G. Magalhaes
Keyword(s):  
Specific Heat ◽  
Random Fields ◽  
Spin Glasses ◽  
Nonlinear Susceptibility

scholarly journals Quasiparticle effects on the linear and nonlinear susceptibility of ZnGeP2

RSC Advances ◽  
2019 ◽  
Vol 9 (61) ◽  
pp. 35771-35779
Author(s):  
Hua Xie ◽  
Shenghao Fang ◽  
He Zhao ◽  
Xiaoliang Xu ◽  
Ning Ye ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Nonlinear Optics ◽  
Nonlinear Optical ◽  
High Thermal Conductivity ◽  
Nonlinear Susceptibility ◽  
Optical Coefficient ◽  
Linear And Nonlinear ◽  
Nonlinear Optical Coefficient

The semiconductor zinc germanium diphosphide (ZnGeP2) has wide applications in the infrared nonlinear optics (NLO) due to its high nonlinear optical coefficient, wide infrared transparency range and high thermal conductivity.

Further studies of nonlinear susceptibility of GdAl and MnCu spin glasses

1982 ◽  
Vol 53 (3) ◽  
pp. 2205-2207 ◽  
Author(s):  
A. P. Malozemoff ◽  
B. Barbara ◽  
Y. Imry
Keyword(s):  
Spin Glasses ◽  
Nonlinear Susceptibility
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