Ferromagnetism and giant magnetoresistance in zinc-blende FeAs monolayers embedded in semiconductor structures

20 May 2020 Le Duc Anh Taiki Hayakawa Yuji Nakagawa Hikari Shinya Tetsuya Fukushima Masaki Kobayashi Hiroshi Katayama-Yoshida Yoshihiro Iwasa Masaaki Tanaka

Material structures containing tetrahedral FeAs bonds, depending on their density and geometrical distribution, can host several competing quantum ground states ranging from superconductivity to ferromagnetism. Here we examine structures of quasi two-dimensional (2D) layers of tetrahedral Fe-As bonds embedded with a regular interval in a semiconductor InAs matrix, which resembles the crystal structure of Fe-based superconductors... (read more)

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