The low temperature properties of CeCu6-xAux show different behavior at the quantum phase transition depending on how the long-range antiferromagnetic order is suppressed. Tuning by hydrostatic pressure p results in a temperature dependence of the specific heat C(T) and the electrical resistivity rho(T) as C/T = a ln(T-0/T) and rho approximate to rho(0) + A'T, while C/T = gamma(0) - a'T-0.5 and rho approximate to rho(0) + A"T-1.5 when tuned by applying a magnetic field B. The magnetic (p, T) and (B, T) phase diagrams as inferred from specific heat, electrical resistivity and neutron diffraction measurements are distinctly different. These findings suggest that the spectra of the low-lying magnetic fluctuations near these quantum phase transitions differ. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 6]
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机译：CeCu6-xAux的低温特性在量子相变处表现出不同的行为，具体取决于如何抑制远程反铁磁序。通过静水压力p进行调整会导致比热C（T）和电阻率rho（T）的温度相关性，因为C / T = a ln（T-0 / T）且rho近似于rho（0）+ A 'T，而C / T = gamma（0）-a'T-0.5，通过施加磁场B进行调谐时，rho近似于rho（0）+ A“ T-1.5。磁性（p，T）和（由比热，电阻率和中子衍射测量得出的B，T）相图明显不同。这些发现表明，在这些量子相变附近的低层磁涨落的光谱有所不同。（C）2002 Elsevier Science BV All保留权利[参考文献：6]
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