Quantum Paramagnet Near Spin‐State Transition (Adv. Quantum Technol. 3/2018). Issue 3 (10th December 2018)

• Record Type: Journal Article
• Authors: Tomiyasu, Keisuke; Ito, Naoko; Okazaki, Ryuji; Takahashi, Yuki; Onodera, Mitsugi; Iwasa, Kazuaki; Nojima, Tsutomu; Aoyama, Takuya; Ohgushi, Kenya; Ishikawa, Yoshihisa; Kamiyama, Takashi; Ohira‐Kawamura, Seiko; Kofu, Maiko; Ishihara, Sumio
• Is Part Of: Advanced quantum technologies. Volume 1:Issue 3(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-12-10
• Subjects: Quantum theory -- Periodicals; Quantum computing -- Periodicals; Quantum chemistry -- Periodicals; Quantum electronics -- Periodicals; 537.5
• DOI: 10.1002/qute.201870035
• Languages: English
• ISSNs: 2511-9044

Abstract

Abstract : In article number1800057, Keisuke Tomiyasu and co‐workers report that Sc substitution in LaCoO3 destabilizes its nonmagnetic low‐spin state and generates an anomalous paramagnetic state accompanied by the enhancement of transport gap and magneto‐lattice‐expansion as well as the contraction of Co–O distance with the increase of electron site‐transfer. These phenomena are not well described by the mixture of conventional low‐ and high‐spin states, but by their quantum superposition occurring on the verge of a spin‐state transition. This study enables the accelerated design of new advanced materials without requiring special equipment based on the concept of quantum spin‐state criticality.