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@ARTICLE{Ryu:902443,
      author       = {Ryu, Huije and Lee, Yangjin and Kim, Hyun-Jung and Kang,
                      Seoung-Hun and Kang, Yoongu and Kim, Kangwon and Kim,
                      Jungcheol and Janicek, Blanka E. and Watanabe, Kenji and
                      Taniguchi, Takashi and Huang, Pinshane Y. and Cheong,
                      Hyeonsik and Jung, In-Ho and Kim, Kwanpyo and Son, Young-Woo
                      and Lee, Gwan-Hyoung},
      title        = {{A}nomalous {D}imensionality‐{D}riven {P}hase
                      {T}ransition of {M}o{T}e 2 in {V}an der {W}aals
                      {H}eterostructure},
      journal      = {Advanced functional materials},
      volume       = {31},
      number       = {51},
      issn         = {1057-9257},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2021-04265},
      pages        = {2107376},
      year         = {2021},
      abstract     = {Phase transition in nanomaterials is distinct from that in
                      3D bulk materials owing to the dominant contribution of
                      surface energy. Among nanomaterials, 2D materials have shown
                      unique phase transition behaviors due to their larger
                      surface-to-volume ratio, high crystallinity, and lack of
                      dangling bonds in atomically thin layers. Here, the
                      anomalous dimensionality-driven phase transition of
                      molybdenum ditelluride (MoTe2) encapsulated by hexagonal
                      boron nitride (hBN) is reported. After encapsulation
                      annealing, single-crystal 2H-MoTe2 transformed into
                      polycrystalline Td-MoTe2 with tilt-angle grain boundaries of
                      60°-glide-reflection and 120°-twofold rotation. In
                      contrast to conventional nanomaterials, the hBN-encapsulated
                      MoTe2 exhibit a deterministic dependence of the phase
                      transition on the number of layers, in which the thinner
                      MoTe2 has a higher 2H-to-Td phase transition temperature. In
                      addition, the vertical and lateral phase transitions of the
                      stacked MoTe2 with different crystalline orientations can be
                      controlled by inserted graphene layers and the thickness of
                      the heterostructure. Finally, it is shown that seamless Td
                      contacts for 2H-MoTe2 transistors can be fabricated by using
                      the dimensionality-driven phase transition. The work
                      provides insight into the phase transition of 2D materials
                      and van der Waals heterostructures and illustrates a novel
                      method for the fabrication of multi-phase 2D electronics.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
      pnm          = {5211 - Topological Matter (POF4-521)},
      pid          = {G:(DE-HGF)POF4-5211},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000695935100001},
      doi          = {10.1002/adfm.202107376},
      url          = {https://juser.fz-juelich.de/record/902443},
}