Magnetic-field-induced quantum criticality in a spin-S planar ferromagnet with single-ion anisotropy

2013 ◽  
Vol 86 (8) ◽  
Author(s):  
M. T. Mercaldo ◽  
I. Rabuffo ◽  
L. De Cesare ◽  
A. Caramico D’Auria
Keyword(s):  
Magnetic Field ◽  
Quantum Criticality

Quantum criticality in NdFe2Ga8 under magnetic field

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Cuixiang Wang ◽  
Xingyu Wang ◽  
Le Wang ◽  
Meng Yang ◽  
Youting Song ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Criticality

scholarly journals Magnetic field induced quantum criticality and the Luttinger sum rule

2018 ◽  
Vol 98 (10) ◽  
Author(s):  
Y. Nishikawa ◽  
O. J. Curtin ◽  
A. C. Hewson ◽  
D. J. G. Crow
Keyword(s):  
Magnetic Field ◽  
Quantum Criticality ◽  
Sum Rule

scholarly journals Magnetic field-driven quantum criticality in antiferromagnetic CePtIn4

2019 ◽  
Vol 116 (41) ◽  
pp. 20333-20338 ◽  
Author(s):  
Debarchan Das ◽  
Daniel Gnida ◽  
Piotr Wiśniewski ◽  
Dariusz Kaczorowski
Keyword(s):  
Magnetic Field ◽  
Tricritical Point ◽  
Condensed Matter ◽  
Quantum Critical Point ◽  
Quantum Criticality ◽  
Transition Line ◽  
First Order ◽  
Experimental Systems ◽  
Quantum Critical ◽  
Second Order Phase Transition

Physics of the quantum critical point is one of the most perplexing topics in current condensed-matter physics. Its conclusive understanding is forestalled by the scarcity of experimental systems displaying novel aspects of quantum criticality. We present comprehensive experimental evidence of a magnetic field-tuned tricritical point separating paramagnetic, antiferromagnetic, and metamagnetic phases in the compound CePtIn4. Analyzing field variations of its magnetic susceptibility, magnetoresistance, and specific heat at very low temperatures, we trace modifications of the antiferromagnetic structure of the compound. Upon applying a magnetic field of increasing strength, the system undergoes metamagnetic transitions which persist down to the lowest temperature investigated, exhibiting first-order–like boundaries separating magnetic phases. This yields a unique phase diagram where the second-order phase transition line terminates at a tricritical point followed by 2 first-order lines reaching quantum critical end points as T→ 0. Our findings demonstrate that CePtIn4 provides innovative perspective for studies of quantum criticality.

scholarly journals Quantum Criticality of an Ising-like Spin- 1/2 Antiferromagnetic Chain in a Transverse Magnetic Field

2018 ◽  
Vol 120 (20) ◽  
Author(s):  
Zhe Wang ◽  
T. Lorenz ◽  
D. I. Gorbunov ◽  
P. T. Cong ◽  
Y. Kohama ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic Field ◽  
Transverse Magnetic ◽  
Quantum Criticality

scholarly journals Magnetic Field Dependence of Excitations Near Spin-Orbital Quantum Criticality

2017 ◽  
Vol 118 (6) ◽  
Author(s):  
A. Biffin ◽  
Ch. Rüegg ◽  
J. Embs ◽  
T. Guidi ◽  
D. Cheptiakov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Quantum Criticality ◽  
Spin Orbital
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