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dc.contributor.authorMahan, Gerald D.
dc.contributor.authorLi, Mingda
dc.contributor.authorSong, Qichen
dc.contributor.authorLiu, Te Huan
dc.contributor.authorDresselhaus, Mildred
dc.contributor.authorChen, Gang
dc.date.accessioned2018-06-25T19:31:00Z
dc.date.available2018-06-25T19:31:00Z
dc.date.issued2017-07
dc.date.submitted2017-03
dc.identifier.issn1530-6984
dc.identifier.issn1530-6992
dc.identifier.urihttp://hdl.handle.net/1721.1/116586
dc.description.abstractDespite the established knowledge that crystal dislocations can affect a material’s superconducting properties, the exact mechanism of the electron-dislocation interaction in a dislocated superconductor has long been missing. Being a type of defect, dislocations are expected to decrease a material’s superconducting transition temperature (T[subscript c]) by breaking the coherence. Yet experimentally, even in isotropic type I superconductors, dislocations can either decrease, increase, or have little influence on T[subscript c]. These experimental findings have yet to be understood. Although the anisotropic pairing in dirty superconductors has explained impurity-induced T[subscript c] reduction, no quantitative agreement has been reached in the case a dislocation given its complexity. In this study, by generalizing the one-dimensional quantized dislocation field to three dimensions, we reveal that there are indeed two distinct types of electron-dislocation interactions. Besides the usual electron-dislocation potential scattering, there is another interaction driving an effective attraction between electrons that is caused by dislons, which are quantized modes of a dislocation. The role of dislocations to superconductivity is thus clarified as the competition between the classical and quantum effects, showing excellent agreement with existing experimental data. In particular, the existence of both classical and quantum effects provides a plausible explanation for the illusive origin of dislocation-induced superconductivity in semiconducting PbS/PbTe superlattice nanostructures. A quantitative criterion has been derived, in which a dislocated superconductor with low elastic moduli and small electron effective mass and in a confined environment is inclined to enhance T[subscript c]. This provides a new pathway for engineering a material’s superconducting properties by using dislocations as an additional degree of freedom. Keywords: Dislocations; disordered superconductor; effective field theory; electron-dislocation interactionen_US
dc.description.sponsorshipUnited States. Department of Energy. Office of Basic Energy Sciences (Grant DE-SC0001299)en_US
dc.description.sponsorshipUnited States. Department of Energy. Office of Basic Energy Sciences (Grant DE-FG02-09ER46577)en_US
dc.description.sponsorshipUnited States. Defense Advanced Research Projects Agency (Award HR0011-16-2-0041)en_US
dc.language.isoen_US
dc.publisherAmerican Chemical Society (ACS)en_US
dc.relation.isversionofhttps://doi.org/10.1021/acs.nanolett.7b00977en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceProf. Chenen_US
dc.titleTailoring Superconductivity with Quantum Dislocationsen_US
dc.typeArticleen_US
dc.identifier.citationLi, Mingda et al. “Tailoring Superconductivity with Quantum Dislocations.” Nano Letters 17, 8 (July 2017): 4604–4610 © 2017 American Chemical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Scienceen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.approverMingda Li, Qichen Song, Te-Huan Liu, Laureen Meroueh, Gerald D. Mahan, Mildred S. Dresselhaus, and Gang Chenen_US
dc.contributor.mitauthorLi, Mingda
dc.contributor.mitauthorSong, Qichen
dc.contributor.mitauthorLiu, Te Huan
dc.contributor.mitauthorDresselhaus, Mildred
dc.contributor.mitauthorChen, Gang
dc.relation.journalNano Lettersen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsLi, Mingda; Song, Qichen; Liu, Te-Huan; Meroueh, Laureen; Mahan, Gerald D.; Dresselhaus, Mildred S.; Chen, Gangen_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-7055-6368
dc.identifier.orcidhttps://orcid.org/0000-0002-1090-4068
dc.identifier.orcidhttps://orcid.org/0000-0002-1157-8540
dc.identifier.orcidhttps://orcid.org/0000-0001-8492-2261
dc.identifier.orcidhttps://orcid.org/0000-0002-3968-8530
mit.licensePUBLISHER_POLICYen_US


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