Our research focuses on the characterization of physical properties and structures of materials through thermodynamic, transport, X-ray and neutron measurements, with an emphasis on the design, synthesis and crystal growth of new materials. Our interests span a wide spectrum of materials, from intermetallics to oxides, especially superconductors and strongly correlated electron systems showing unusual electronic and magnetic ground states that can be perturbed by chemical doping, applied pressure or magnetic field. We aim at synthesizing new materials with nontrivial properties, characterizing quantum phases, and examining the different energy scales in solids. The interplay of magnetism, superconductivity and structure will be of particular interest.
07/2021 Our collaborative work on the discovery of the layer Hall effect in an even-layered 2D MnBi2Te4 device was published in Nature. Congrats to Chaowei, Anyuan, Suyang, Qiong, et. al! https://www.nature.com/articles/s41586-021-03679-w
07/2021 Congrats to Tiema! His first first-author paper on the strain effect on CsV3Sb5 was announced in arXiv. Good job!
06/2021 Congrats to Chaowei for being selected as the UCLA dissertation year fellow!
05/2021 Prof. Ni gave an IMS Sponsored Distinguished Lecture on Topological Materials "MnBi2Te4.nBi2Te3: a happy marriage of magnetism and topology" at LANL.
04/2021 Prof. Ni gave a virtual invited talk "MnBi2Te4.nBi2Te3: a happy marriage of magnetism and topology" at 2021 virtual MRS meeting & exhibit.
04/2021 Prof. Ni gave a virtual invited seminar "MnBi2Te4.nBi2Te3: a happy marriage of magnetism and topology" at George Mason University.
03/2021 Prof. Ni gave a virtual invited colloquium "MnBi2Te4.nBi2Te3: the perfect marriage of magnetism and topology" at Boston College.
03/2021 Chaowei delivered a virtual talk "Switching on ferromagnetic coupling by Mn/Sb antisite disorder in Mn(Bi1-xSbx)4Te7" in March Meeting 2021. Nice talk!
12/2020 Eve has discovered a chiral superconductor NbGe2 with Kramers-Weyl fermions. The work was selected as the Editors' suggestion in Phys. Rev. B. Congrats!
12/2020 Tiema has received the TA award with a generous check from our lovely department, congrats!
10/2020 Welcome Eve for the new role as the postdoctoral researcher in the lab!
09/2020 Big congrats and hugs to Tiema and Tianci for passing their comprehensive exams!
09/2020 Prof. Ni gave an invited virtual seminar "MnBi2Te4.nBi2Te3: the perfect marriage of magnetism and topology" at Northeastern University.
09/2020 Welcome Jacklyn Zhu as a new undergraduate researcher!
09/2020 Chaowei has been awarded the prestigious Julian Schwinger graduate fellowship! Congratulations, Chaowei! We are so proud of you! https://schwingerfoundation.org/announce.php
07/2020 Check out the news on our discovery of intrinsic magnetic topological insulators MnBi4Te7 and MnBi8Te13. https://www.physicalsciences.ucla.edu/news/
07/2020 Our work on the discovery of the first intrinsic ferromagnetic axion topological insulator MnBi8Te13 is published on Science Advances. Congrats to Chaowei, Scott, and Jinyu!
07/2020 Our work on a Kitaev material candidate YbCl3 is published on Physical Review B. Congrats to Jie! https://journals.aps.org/prb/pdf/10.1103/PhysRevB.102.014427
06/2020 Our work on EuAg4As2 with an incommensurate non-collinear magnetic structure is published on Physical Review Materials. Congrats to Bing and Chaowei! https://journals.aps.org/prmaterials/pdf/10.1103/PhysRevMaterials.4.064419
06/2020 Eve successfully defended her thesis. Congratulations, Dr. Emmanouilidou! We are so proud of you.
02/2020 Ni gave invited talks at MIT and Harvard one week before the breakout of COVID19 at Boston.
01/2020 Chaowei's work on the discovery of a Z2 antiferromagnetic topological insulator MnBi4Te7 with weak interlayer magnetic coupling is published on Nature Communications. Congrats! https://www.nature.com/articles/s41467-019-13814-x