论文标题
四极有序和晶体对称性破裂的高场超声研究在CERHIN5中
High-Field Ultrasonic Study of Quadrupole Ordering and Crystal Symmetry Breaking in CeRhIn5
论文作者
论文摘要
我们对重铁素化合物Cerhin $ _5 $进行了超声测量，以研究高磁场中田间诱导的各向异性相的起源。横向弹性常数$ C_ \ MATHRM {T} =（C_ {11} -C_ {12}）/2 $和超声波衰减系数$α_\ MATHRM {T} $在$ B^\ star = 28.5 $ t上显示清晰的异常，以电子nem nem nem nem nem nem nem timet点进行了讨论。此外，$ c_ \ mathrm {t} $在28.5 t的低于28.5 t的声学上表现出声学de haas-van振荡。这些弹性异常左右$ b^\ star $表示$ o_ {x^2-y^2} $ by y $ o_ {x^2-y^2} $ b_ b_ \ mathrm mathrm mathrm cymerion and cremion and cremerment and cremermention and cymermention and cymermention and Sourment and cremermenty对于四极元 - 耦合，这是由$ 4F $电子和$ p $ - $ f $杂交状态产生的。
We performed an ultrasonic measurement for the heavy-fermion compound CeRhIn$_5$ to investigate the origin of the field-induced anisotropic phase in high magnetic fields. The transverse elastic constant $C_\mathrm{T} = (C_{11} - C_{12})/2$ and the ultrasonic attenuation coefficient $α_\mathrm{T}$ show clear anomaly at $B^\star = 28.5$ T, which was discussed as the electronic nematic transition point. In addition, $C_\mathrm{T}$ exhibits acoustic de Haas-van Alphen oscillation below 28.5 T. These elastic anomalies around $B^\star$ indicate an electric quadrupole ordering of $O_{x^2-y^2}$ accompanied by $B_\mathrm{1g}$ crystal symmetry breaking and Fermi surface reconstruction due to the quadrupole-strain coupling, which results from itinerant $4f$ electrons and the $p$-$f$ hybridized state.
