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5 papers · 1 filter
Machine-Learning Detection of the Berezinskii-Kosterlitz-Thouless Transitions
Masahito Mochizuki, Yusuke Miyajima
The Berezinskii-Kosterlitz-Thouless (BKT) transition is a typical topological phase transition defined between binding and unbinding states of vortices and antivortices, which is n…
Modeling and Physics of Multiferroic Perovskite Manganites
Masahito Mochizuki
A new type of multiferroicity was experimentally discovered in 2003 in a perovskite manganite TbMnO where its ferroelectricity is induced by cycloidally ordered Mn spins. Suseq…
Fundamental Theory of Current-Induced Motion of Magnetic Skyrmions
Yuto Ohki, Masahito Mochizuki
Magnetic skyrmions are topological spin textures that appear in magnets with broken spatial inversion symmetry via competition between the (anti)ferromagnetic exchange interactions…
WanderGuide: Indoor Map-less Robotic Guide for Exploration by Blind People
Masaki Kuribayashi, Kohei Uehara, Allan Wang +2
Blind people have limited opportunities to explore an environment based on their interests. While existing navigation systems could provide them with surrounding information while…
Bose-Einstein condensation of five clusters in Ne and supersolidity
S. Ohkubo, J. Takahashi, Y. Yamanaka
We show that the five cluster states recently observed in Ne, slightly above the five threshold energy, are Bose-Einstein condensates of five clusters. The state…