Anomalous behavior of a α-iron zero-temperature isotherm in the region of negative pressures

JETP Letters ◽  
2004 ◽  
Vol 79 (11) ◽  
pp. 537-541 ◽  
Author(s):  
G. V. Sin’ko ◽  
N. A. Smirnov
2021 ◽  
Vol 2119 (1) ◽  
pp. 012137
Author(s):  
A E Musikhin ◽  
M A Bespyatov ◽  
T M Kuzin ◽  
V D Grigorieva ◽  
V N Shlegel

Abstract The heat capacity of a lithium tungstate single crystal doped by 5% molybdenum Li2Mo0.05W0.95O4 in the range of 78.5–302.8 K was measured by the adiabatic method. No anomalous behavior of heat capacity was found. The heat capacity function was obtained in the range of 0–303 K by extrapolating to zero temperature and fitting experimental points. Thermodynamic functions of entropy, enthalpy increment and Gibbs free energy at 298.15 K were calculated using the obtained data.


2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Yasuyuki Nakajima ◽  
Tristin Metz ◽  
Christopher Eckberg ◽  
Kevin Kirshenbaum ◽  
Alex Hughes ◽  
...  

AbstractQuantum-mechanical fluctuations between competing phases induce exotic collective excitations that exhibit anomalous behavior in transport and thermodynamic properties, and are often intimately linked to the appearance of unconventional Cooper pairing. High-temperature superconductivity, however, makes it difficult to assess the role of quantum-critical fluctuations in shaping anomalous finite-temperature physical properties. Here we report temperature-field scale invariance of non-Fermi liquid thermodynamic, transport, and Hall quantities in a non-superconducting iron-pnictide, Ba(Fe1/3Co1/3Ni1/3)2As2, indicative of quantum criticality at zero temperature and applied magnetic field. Beyond a linear-in-temperature resistivity, the hallmark signature of strong quasiparticle scattering, we find a scattering rate that obeys a universal scaling relation between temperature and applied magnetic fields down to the lowest energy scales. Together with the dominance of hole-like carriers close to the zero-temperature and zero-field limits, the scale invariance, isotropic field response, and lack of applied pressure sensitivity suggests a unique quantum critical system unhindered by a pairing instability.


2021 ◽  
Vol 126 (1) ◽  
Author(s):  
Valentino Bianco ◽  
P. Montero de Hijes ◽  
Cintia P. Lamas ◽  
Eduardo Sanz ◽  
Carlos Vega

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