Research Interests:

Quantum Materials and Emergent Phenomena


Quantum correlations and topological states represent the core issues in advanced condensed matters. While the many-body interaction can be an amazing origin for emergent phenomena in quantum condensed matter physics, we are playing our games on the “edges” of this active frontier field. In typical cases, we have been working with the physics of 3d ~ 5d transition metal compounds and in particular the physics of multiferroics. Our experiences, many more failures than achievements, make us understand why grief is the spirit of a hero.

What we are interested in includes the coexistence and competitions of various order degrees of freedom in transition metal compounds. It is nearly impossible for people to kick out these problems but the experiences can’t be too much pain and happiness. On one hand, we investigate the correlation and competitions of these degrees, excitations, quantum transitions, and possible emergent phenomena, design and synthesis of novel materials with these functionalities are our goals, no matter how frustrated they are.

Specifically, we focus on: multiferroics and magnetoelectricity; quantum inhomogeneities and quantum phase transitions; responses and manipulations of these transitions; spin glass and frustrations; synthesis of novel materials offering these properties.

量子关联与拓扑是凝聚态多体问题中最富有挑战的课题之一。正如一提到多体问题人们都有些莫衷一是的感觉,所谓英雄气短不过如此。我们对量子材料的研究主要集中在3d~5d过渡金属氧化物物理,特别是多铁性物理方面,虽然对任何一个体系的研究都让我们有江郎才尽之感。

我们关注于过渡金属氧化物中电子电荷、自旋、轨道和晶格之间的复杂交互作用。全面理解这些复杂交互作用也许是我们不可能完成的任务,却依然使得我们“为伊消得人憔悴”!一方面,我们执着于已有体系中各种序参量之间的关联耦合、基本元激发、量子相变和可能存在的物理新效应;另一方面,我们同样钟情于设计和制备新的材料体系,以凸显其中一种或两种序参量的美貌,企图“调制”出新的物理效应。