2026-09-20T20:26:26Zhttps://dspace.mit.edu/server/oai/request

oai:dspace.mit.edu:1721.1/1202212022-01-13T07:54:07Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024

Leonid S. Levitov. Guo, Haoyu, S.B. Massachusetts Institute of Technology Massachusetts Institute of Technology. Department of Physics. Massachusetts Institute of Technology. Department of Physics 2019-02-05T15:58:54Z 2019-02-05T15:58:54Z 2018 2018 http://hdl.handle.net/1721.1/120221 1082867657 Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2018. Cataloged from PDF version of thesis. Includes bibliographical references (pages 63-64). Electrons in strongly-correlated systems move in a neatly coordinated manner, in many ways resembling the movement of viscous fluids and leading to surprising collective behaviors. Here we explore how the hydrodynamic behavior manifests itself in the electron transport through nanoscale constrictions. Free electron flows through constrictions in metals are often regarded as an ultimate high-conduction charge transfer mechanism. However, as shown in this thesis, interactions can facilitate transport and give rise to super-ballistic conduction, allowing conductance to exceed the ballistic limit value. In other words, interactions and viscous effects, rather than presenting a hindrance for conduction, help increase carrier mobility and suppress dissipation. This interesting behavior represents a clear signature of the electron hydrodynamic regime, and provides a way to determine electron viscosity. These results show that interactions and viscous effects can facilitate high-mobility transport, granting a new route for designing low-power nanoscale devices. by Haoyu Guo. S.B. 64 pages eng Massachusetts Institute of Technology MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 Physics. Signatures of hydrodynamic transport in an electron system Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="cda71531-bae8-431e-91bb-b02aaa226754"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Signatures of hydrodynamic transport in an electron system</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2018</PublicationDate> <Authors> <Author> <DisplayName>Guo, Haoyu, S.B. Massachusetts Institute of Technology</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Physics.</Keyword> <Abstract>Electrons in strongly-correlated systems move in a neatly coordinated manner, in many ways resembling the movement of viscous fluids and leading to surprising collective behaviors. Here we explore how the hydrodynamic behavior manifests itself in the electron transport through nanoscale constrictions. Free electron flows through constrictions in metals are often regarded as an ultimate high-conduction charge transfer mechanism. However, as shown in this thesis, interactions can facilitate transport and give rise to super-ballistic conduction, allowing conductance to exceed the ballistic limit value. In other words, interactions and viscous effects, rather than presenting a hindrance for conduction, help increase carrier mobility and suppress dissipation. This interesting behavior represents a clear signature of the electron hydrodynamic regime, and provides a way to determine electron viscosity. These results show that interactions and viscous effects can facilitate high-mobility transport, granting a new route for designing low-power nanoscale devices.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>