Pure nematic state in the iron-based superconductor FeSe
Source abstract
Abstract
Lattice and electronic states of thin FeSe films on ${\mathrm{LaAlO}}3$ substrates are investigated in the vicinity of the nematic phase transition. No evidence of a structural phase transition is found by x-ray diffraction below ${T}*\ensuremath{\sim}90$ K, while results obtained from a resistivity measurement and angle-resolved photoemission spectroscopy clearly show the appearance of a nematic state. These results indicate the formation of a pure nematic state in the iron-based superconductor and provide conclusive evidence that the nematic state originates from the electronic degrees of freedom. This pure nematicity in the thin film implies the difference in the electron-lattice interaction from bulk FeSe crystals. FeSe films provide valuable playgrounds for observing the pure response of ``bare'' electron systems free from the electron-lattice interaction, and should make an important contribution to investigate nematicity and its relationship with superconductivity.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Iron-based superconductors research · Corporate Taxation and Avoidance · Physics of Superconductivity and Magnetism
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
Department of Basic Science, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan
Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan
Funding
Precursory Research for Embryonic Science and Technology · Core Research for Evolutional Science and Technology · Japan Society for the Promotion of Science · Japan Science and Technology Agency · RIKEN
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