Spatially resolved steady-state negative capacitance
DC Field | Value | Language |
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dc.contributor.author | Yadav, Ajay K. | - |
dc.contributor.author | Nguyen, Kayla X. | - |
dc.contributor.author | Hong, Zijian | - |
dc.contributor.author | Garcia-Fernandez, Pablo | - |
dc.contributor.author | Aguado-Puente, Pablo | - |
dc.contributor.author | Nelson, Christopher T. | - |
dc.contributor.author | Das, Sujit | - |
dc.contributor.author | Prasad, Bhagawati | - |
dc.contributor.author | Kwon, Daewoong | - |
dc.contributor.author | Cheema, Suraj | - |
dc.contributor.author | Khan, Asif I. | - |
dc.contributor.author | Hu, Chenming | - |
dc.contributor.author | Iniguez, Jorge | - |
dc.contributor.author | Junquera, Javier | - |
dc.contributor.author | Chen, Long-Qing | - |
dc.contributor.author | Muller, David A. | - |
dc.contributor.author | Ramesh, Ramamoorthy | - |
dc.contributor.author | Salahuddin, Sayeef | - |
dc.date.accessioned | 2023-09-04T07:44:21Z | - |
dc.date.available | 2023-09-04T07:44:21Z | - |
dc.date.created | 2023-07-21 | - |
dc.date.issued | 2019-01 | - |
dc.identifier.issn | 0028-0836 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189915 | - |
dc.description.abstract | Negative capacitance is a newly discovered state of ferroelectric materials that holds promise for electronics applications by exploiting a region of thermodynamic space that is normally not accessible(1-14). Although existing reports of negative capacitance substantiate the importance of this phenomenon, they have focused on its macroscale manifestation. These manifestations demonstrate possible uses of steady-state negative capacitance-for example, enhancing the capacitance of a ferroelectric-dielectric heterostructure(4,7,14) or improving the subthreshold swing of a transistor(8-12). Yet they constitute only indirect measurements of the local state of negative capacitance in which the ferroelectric resides. Spatial mapping of this phenomenon would help its understanding at a microscopic scale and also help to achieve optimal design of devices with potential technological applications. Here we demonstrate a direct measurement of steady-state negative capacitance in a ferroelectric-dielectric heterostructure. We use electron microscopy complemented by phase-field and first-principles-based (second-principles) simulations in SrTiO3/PbTiO3 superlattices to directly determine, with atomic resolution, the local regions in the ferroelectric material where a state of negative capacitance is stabilized. Simultaneous vector mapping of atomic displacements (related to a complex pattern in the polarization field), in conjunction with reconstruction of the local electric field, identify the negative capacitance regions as those with higher energy density and larger polarizability: the domain walls where the polarization is suppressed. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | NATURE RESEARCH | - |
dc.title | Spatially resolved steady-state negative capacitance | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kwon, Daewoong | - |
dc.identifier.doi | 10.1038/s41586-018-0855-y | - |
dc.identifier.scopusid | 2-s2.0-85060403157 | - |
dc.identifier.wosid | 000456653500035 | - |
dc.identifier.bibliographicCitation | NATURE, v.565, no.7740, pp.468 - 471 | - |
dc.relation.isPartOf | NATURE | - |
dc.citation.title | NATURE | - |
dc.citation.volume | 565 | - |
dc.citation.number | 7740 | - |
dc.citation.startPage | 468 | - |
dc.citation.endPage | 471 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | FERROELECTRICITY | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | LATTICE | - |
dc.identifier.url | https://www.nature.com/articles/s41586-018-0855-y | - |
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