Cnr SPIN - News & Events

"Near-90° Switch in the Polar Axis of Dion–Jacobson Perovskites by Halide Substitution" published in JACS

An international collaboration, with A. Stroppa (CNR-SPIN), K.P. Loh (NUS), K. Leng (PolyU) as corresponding authors, showed that the polar axis in ferroelectric 2D Dion-Jacobson (DJ) phase hybrid organic-inorganic perovskites (HOIPs) can be switched by almost 90° using halide substitution. In DJ phase (4AMP)PbX4 ferroelectric system (4AMP = 4-(Aminomethyl)piperidine, X= I and Br), by substituting the iodide with bromide element in perovskite layer, the obtained [PbBr4]2- compound presented In-Plane (IP) polar axis, which is in contrast to the all previously reported [PbI4]2- counterparts with Out-of-Plane (OOP) polar axis. (DOI: 10.1021/jacs.3c03921 - https://pubs.acs.org/doi/10.1021/jacs.3c03921?ref=PDF).

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Magneto-Optical Kerr effect in an Anti-ferromagnetic Polar Heterostructure

An international team, including researchers from CNR-SPIN, Seoul National University, The University of Hong Kong, University of L’Aquila, Southeast University studied the magneto-optical properties of multiferroic heterostructure. As reported in ACS Applied Materials & Interfaces (ACS Appl. Mater. Interfaces 2023, 15, 18, 22282-22290; https://doi.org/10.1021/acsami.3c02680), have shown an unusual magneto-optical Kerr effect (a phenomenon where the reflected light shows a polarization change upon reflection from a structure) in a antiferromagnetic and polar heterostructure, namely CrI3/In2Se3/CrI3.

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Unveiled new paths to design nanoscale patterns in Mott insulators

An international team which includes a large group of researchers from CNR-SPIN, together with scientists of MagTop Research Centre in Warsaw, University of Salerno, and University of Antwerp has uncovered new quantum effects that can control the nanoscale pattern formation in Mott crystals. The discovery of the physical laws underlying these properties could be used for the development of room temperature non-volatile electronics based on voltage-controlled nanometric phases and, in perspective, could be integrated with photonic functional devices too.

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Italian Quantum Weeks 2023 a Salerno

Quest'anno la mostra delle Italian Quantum Weeks  «Dire l'indicibile» con tema "l'entanglement quantistico" fa tappa anche a Salerno. 

Dando seguito alla mostra organizzata nel mese di aprile, presso il Museo di Fisica di Napoli, dagli istituti CNR SPIN, INO e ISASI e dall’Università Federico II, in queste settimane è stato allestito, negli spazi del Dipartimento di Fisica dell’Università di Salerno, un breve percorso che, attraverso i concetti chiave della meccanica quantistica, conduce il visitatore a conoscere più da vicino alcuni degli aspetti più caratteristici dell'entanglement. Il percorso, inserito anche nel programma di orientamento del Dipartimento, rimarrà per l’intero mese di maggio a disposizione di tutti gli interessati al mondo delle nuove tecnologie quantistiche.

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