论文标题
铁电量子临界点的热磁波动
Thermal Magnetic Fluctuations of a Ferroelectric Quantum Critical Point
论文作者
论文摘要
两个不同量子订单的纠缠是现代冷凝物理物理学的利益。一个例子之一是动态多效性，其中电偶极子的波动导致磁化。我们在有限温度下研究了这种效果，并证明了铁电量子临界点附近的铁电的磁反应升高（Fe QCP）。我们在有限温度下计算Fe QCP的副样品在Fe QCP的副样品上的磁敏感性，并在Fe QCP附近找到增强的磁敏感性。我们提出量子伴钛酸盐（STO）作为候选材料，以寻求动态多效性。我们估计了该材料的磁敏感性的大小，并发现它是可以通过实验检测到的。
Entanglement of two different quantum orders is of an interest of the modern condensed matter physics. One of the examples is the dynamical multiferroicity, where fluctuations of electric dipoles lead to magnetization. We investigate this effect at finite temperature and demonstrate an elevated magnetic response of a ferroelectric near the ferroelectric quantum critical point (FE QCP). We calculate the magnetic susceptibility of a bulk sample on the paraelectric side of the FE QCP at finite temperature and find enhanced magnetic susceptibility near the FE QCP. We propose quantum paraelectric strontium titanate (STO) as a candidate material to search for dynamic multiferroicity. We estimate the magnitude of the magnetic susceptibility for this material and find that it is detectable experimentally.
