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1. Controlling Stoichiometry in Ultrathin van der Waals Films: PtTe 2 , Pt 2 Te 3 , Pt 3 Te 4 , and Pt 2 Te 2

   https://doi.org/10.1021/acsnano.2c04303  

   Lasek, Kinga ; Ghorbani-Asl, Mahdi ; Pathirage, Vimukthi ; Krasheninnikov, Arkady V. ; Batzill, Matthias ( June 2022 , ACS Nano)
2. Compositional Control and Optimization of Molecular Beam Epitaxial Growth of (Sb 2 Te 3 ) 1–x (MnSb 2 Te 4 ) x Magnetic Topological Insulators

   https://doi.org/10.1021/acs.cgd.1c01453  

   Levy, Ido ; Forrester, Candice ; Deng, Haiming ; Roldan-Gutierrez, Manuel ; McCartney, Martha R. ; Smith, David J. ; Testelin, Christophe ; Krusin-Elbaum, Lia ; Tamargo, Maria C. ( May 2022 , Crystal Growth & Design)
3. In 2 Se 3 , In 2 Te 3 , and In 2 (Se,Te) 3 Alloys as Photovoltaic Materials

   https://doi.org/10.1021/acs.jpclett.2c02975  

   Li, Wei ; Cai, Xue-Fen ; Valdes, Nicholas ; Wang, Tianshi ; Shafarman, William ; Wei, Su-Huai ; Janotti, Anderson ( December 2022 , The Journal of Physical Chemistry Letters)
4. Systemic consequences of disorder in magnetically self-organized topological MnBi 2 Te 4 /(Bi 2 Te 3 ) n superlattices

   https://doi.org/10.1088/2053-1583/ac3cc6  

   Sitnicka, Joanna ; Park, Kyungwha ; Skupiński, Paweł ; Grasza, Krzysztof ; Reszka, Anna ; Sobczak, Kamil ; Borysiuk, Jolanta ; Adamus, Zbigniew ; Tokarczyk, Mateusz ; Avdonin, Andrei ; et al ( December 2021 , 2D Materials)

   Abstract MnBi 2 Te 4 /(Bi 2 Te 3 ) n materials system has recently generated strong interest as a natural platform for the realization of the quantum anomalous Hall (QAH) state. The system is magnetically much better ordered than substitutionally doped materials, however, the detrimental effects of certain disorders are becoming increasingly acknowledged. Here, from compiling structural, compositional, and magnetic metrics of disorder in ferromagnetic (FM) MnBi 2 Te 4 /(Bi 2 Te 3 ) n it is found that migration of Mn between MnBi 2 Te 4 septuple layers (SLs) and otherwise non-magnetic Bi 2 Te 3 quintuple layers (QLs) has systemic consequences—it induces FM coupling of Mn-depleted SLs with Mn-doped QLs, seen in ferromagnetic resonance as an acoustic and optical resonance mode of the two coupled spin subsystems. Even for a large SL separation ( n ≳ 4 QLs) the structure cannot be considered as a stack of uncoupled two-dimensional layers. Angle-resolved photoemission spectroscopy and density functional theory studies show that Mn disorder within an SL causes delocalization of electron wave functions and a change of the surface band structure as compared to the ideal MnBi 2 Te 4 /(Bi 2 Te 3 ) n . These findings highlight the critical importance of inter- and intra-SL disorder towards achieving new QAH platforms as well as exploring novel axion physics in intrinsic topological magnets. 

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5. Nanoscale Mapping and Defect‐Assisted Manipulation of Surface Plasmon Resonances in 2D Bi 2 Te 3 /Sb 2 Te 3 In‐Plane Heterostructures

   https://doi.org/10.1002/adom.202101968  

   Moradifar, Parivash ; Nixon, Austin G. ; Sharifi, Tiva ; Driel, Tim Brandt ; Ajayan, Pulickel ; Masiello, David J. ; Alem, Nasim ( May 2022 , Advanced Optical Materials)