Search Results - "Noh, T. W."
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Domain switching kinetics in disordered ferroelectric thin films
Published in Physical review letters (31-12-2007)“…We investigated domain kinetics by measuring the polarization switching behaviors of (111)-preferred polycrystalline Pb(Zr,Ti)O3 films, which are widely used…”
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Occurrence of both unipolar memory and threshold resistance switching in a NiO film
Published in Physical review letters (16-01-2009)“…We observed two types of reversible resistance switching (RS) effects in a NiO film: memory RS at low temperature and threshold RS at high temperature. We were…”
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Lanthanum-substituted bismuth titanate for use in non-volatile memories
Published in Nature (London) (14-10-1999)“…Non-volatile memory devices are so named because they retain information when power is interrupted; thus they are important computer components. In this…”
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Direct penetration of spin-triplet superconductivity into a ferromagnet in Au/SrRuO3/Sr2RuO4 junctions
Published in Nature communications (26-10-2016)“…Efforts have been ongoing to establish superconducting spintronics utilizing ferromagnet/superconductor heterostructures. Previously reported devices are based…”
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Nonlinear dynamics of domain-wall propagation in epitaxial ferroelectric thin films
Published in Physical review letters (30-01-2009)“…We investigated the ferroelectric domain-wall propagation in epitaxial Pb(Zr,Ti)O3 thin film over a wide temperature range (3-300 K). We measured the…”
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Observation of inhomogeneous domain nucleation in epitaxial Pb(Zr,Ti)O3 capacitors
Published in Applied physics letters (24-09-2007)“…We investigated domain nucleation process in epitaxial Pb(Zr,Ti)O3 capacitors under a modified piezoresponse force microscope. We obtained domain evolution…”
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Scaling theory for unipolar resistance switching
Published in Physical review letters (09-11-2010)“…We investigate a reversible percolation system showing unipolar resistance switching in which percolating paths are created and broken alternately by the…”
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Polarization relaxation induced by a depolarization field in ultrathin ferroelectric BaTiO3 capacitors
Published in Physical review letters (02-12-2005)Get full text
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Study of spin-ordering and spin-reorientation transitions in hexagonal manganites through Raman spectroscopy
Published in Scientific reports (24-08-2015)“…Spin-wave (magnon) scattering, when clearly observed by Raman spectroscopy, can be simple and powerful for studying magnetic phase transitions. In this paper,…”
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Polarization switching dynamics governed by the thermodynamic nucleation process in ultrathin ferroelectric films
Published in Physical review letters (15-12-2006)“…In most ferroelectrics, the domain nucleation barrier (U*) is thermally insurmountable; this is called "Landauer's paradox." However, we showed that, in…”
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Critical thickness of ultrathin ferroelectric BaTiO3 films
Published in Applied physics letters (07-03-2005)“…To investigate the critical thickness of ferroelectric BaTiO3 (BTO) films, we fabricated fully strained SrRuO3∕BTO∕SrRuO3 heterostructures on SrTiO3 substrates…”
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Ferromagnetism induced by clustered Co in Co-doped anatase TiO2 thin films
Published in Physical review letters (10-01-2003)“…We investigated ferromagnetism of a newly discovered ferromagnetic semiconductor Co-doped anatase TiO2 thin film, using the magnetic circular dichroism (MCD)…”
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Charge-Spin Correlation in van der Waals Antiferromagnet NiPS3
Published in Physical review letters (27-03-2018)“…Strong charge-spin coupling is found in a layered transition-metal trichalcogenide NiPS3, a van der Waals antiferromagnet, from studies of the electronic…”
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Enhanced tunnelling electroresistance effect due to a ferroelectrically induced phase transition at a magnetic complex oxide interface
Published in Nature materials (01-05-2013)“…The tunnelling electroresistance effect that occurs at ferroelectric tunnel junctions could form the basis for a class of potential memory applications. Now,…”
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Giant flexoelectric effect in ferroelectric epitaxial thin films
Published in Physical review letters (29-07-2011)“…We report on nanoscale strain gradients in ferroelectric HoMnO(3) epitaxial thin films, resulting in a giant flexoelectric effect. Using grazing-incidence…”
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Spin-orbit coupling in iridium-based 5d compounds probed by x-ray absorption spectroscopy
Published in Physical review. B, Condensed matter and materials physics (19-11-2012)“…We have performed x-ray absorption spectroscopy (XAS) measurements on a series of Ir-based 5d transition metal compounds, including Ir, IrCl sub(3), IrO…”
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Raman scattering studies of the magnetic ordering in hexagonal HoMnO3 thin films
Published in Journal of Raman spectroscopy (01-09-2010)“…We present the results of the temperature dependence of the Raman spectra of hexagonal HoMnO3 thin films in the 13–300 K temperature range. The films were…”
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Reduction of charge fluctuation energies in ultrathin NiO films on Ag(001)
Published in Surface science (01-10-2013)“…As the film becomes atomically thin, the on-site Coulomb interaction energy between two 3p holes of the NiO films on Ag(001) U (Ni 3p) significantly decreases…”
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Novel Jeff=1/2 Mott state induced by relativistic spin-orbit coupling in Sr2IrO4
Published in Physical review letters (15-08-2008)“…We investigated the electronic structure of 5d transition-metal oxide Sr2IrO4 using angle-resolved photoemission, optical conductivity, x-ray absorption…”
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