WenXuan Qiu

Release Time: 2020-11-26 17:26

Personel:

邱温轩.JPG


2010-09-01 2014-07-06 Hunan Institute of Technology, Physics, Bachelor degree

2014-09-01 2015-07-06 Huazhong University of Science and Technology,Condensed Matter Physics, master degree

2015-09-01 2022-06      Huazhong University of Science and Technology, Condensed Matter physics, doctor degree

2015-09-01 present        Wuhan University, Condensed Matter physics, post-doctor



Research areas:

2014-09 ~ 2017-07  Artificial two-dimensional electron lattice in metal surface molecular adsorption system.

2017-09 to 2018-04 The valley polarization caused by impurities in a semi-classical diffusion transport system.

2018-05 ~ Present   Multi-pole moment parameters and novel magnetic phases in 4d and 5d transition metal compounds.


Postdoctoral research direction:

    In the past, the understanding of 3d transition metal compounds has been relatively mature. The spin-orbit coupling is relatively small relative to the crystal field, and the d-orbital freedom is completely quenched, so the multi-pole moment parameters cannot be formed. In the 4d and 5d transition metal compounds, due to the orbital angular momentum that is not completely quenched by the crystal field and the relatively strong spin-orbit coupling, a new order parameter different from the traditional orbital magnetic moment and the spin magnetic moment is formed. The moment order parameters lead to physical phenomena that cannot be explained by traditional dipole moments, such as magnetic dielectric coupling effects, quantum magnetic phase transitions, and nonlinear Hall effects. I have used the response function divergence theory to calculate the previous magnetic phase transition in Eu2Ir2O7 with the appearance of multipole moment parameters [Dai, et al., Phys. Rev. Lett. 119, 187203 (2017)], and intends to The new method is used to predict other potential multipole moment materials. Then, starting from the microscopic model, using symmetry analysis and Landau-Ginsberg method to develop a set of phenomenological theory, confirm the correspondence between observables such as dielectric tensor and multipole moment parameters, and experiment with strong magnetic field center. In cooperation, experimental methods were used to confirm the spin-orbit coupling strength and multi-pole moment parameters.


Main publications:

1.Wen-Xuan Qiu, Shuai Li, Jin-Hua Gao, Yi Zhou, and Fu-Chun Zhang, Designing an artificial Lieb lattice on a metal surface,Phys. Rev. B 94, 241409(R).

2.Shuai Li, Wen-Xuan Qiu, Jin-Hua Gao, Designing artificial two dimensional electron lattice on metal surface: A Kagome-like lattice as an example, Nanoscale 8, 12747 (2016).