Time-reversal symmetry breaking superconductivity between twisted cuprate superconductors.

التفاصيل البيبلوغرافية
العنوان:	Time-reversal symmetry breaking superconductivity between twisted cuprate superconductors.
المؤلفون:	Zhao SYF; Department of Physics, Harvard University, Cambridge, MA 02138, USA., Cui X; Department of Physics, Harvard University, Cambridge, MA 02138, USA., Volkov PA; Department of Physics, Harvard University, Cambridge, MA 02138, USA.; Center for Materials Theory, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA.; Department of Physics, University of Connecticut, Storrs, CT 06269, USA., Yoo H; Department of Physics, Institute of Emergent Materials, Sogang University, Seoul 04107, Korea., Lee S; Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Korea., Gardener JA; Center for Nanoscale Systems, Harvard University, Cambridge, MA 02138, USA., Akey AJ; Center for Nanoscale Systems, Harvard University, Cambridge, MA 02138, USA., Engelke R; Department of Physics, Harvard University, Cambridge, MA 02138, USA., Ronen Y; Department of Physics, Harvard University, Cambridge, MA 02138, USA., Zhong R; Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY 11973, USA., Gu G; Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY 11973, USA., Plugge S; Department of Physics and Astronomy and Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada., Tummuru T; Department of Physics and Astronomy and Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada., Kim M; Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Korea., Franz M; Department of Physics and Astronomy and Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada., Pixley JH; Center for Materials Theory, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA., Poccia N; Department of Physics, Harvard University, Cambridge, MA 02138, USA.; Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), 01069 Dresden, Germany., Kim P; Department of Physics, Harvard University, Cambridge, MA 02138, USA.
المصدر:	Science (New York, N.Y.) [Science] 2023 Dec 22; Vol. 382 (6677), pp. 1422-1427. Date of Electronic Publication: 2023 Dec 07.
نوع المنشور:	Journal Article
اللغة:	English
بيانات الدورية:	Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 0404511 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-9203 (Electronic) Linking ISSN: 00368075 NLM ISO Abbreviation: Science Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة:	Publication: : Washington, DC : American Association for the Advancement of Science Original Publication: New York, N.Y. : [s.n.] 1880-
مستخلص:	Twisted interfaces between stacked van der Waals (vdW) cuprate crystals present a platform for engineering superconducting order parameters by adjusting stacking angles. Using a cryogenic assembly technique, we construct twisted vdW Josephson junctions (JJs) at atomically sharp interfaces between Bi 2 Sr 2 CaCu 2 O 8+ x crystals, with quality approaching the limit set by intrinsic JJs. Near 45° twist angle, we observe fractional Shapiro steps and Fraunhofer patterns, consistent with the existence of two degenerate Josephson ground states related by time-reversal symmetry (TRS). By programming the JJ current bias sequence, we controllably break TRS to place the JJ into either of the two ground states, realizing reversible Josephson diodes without external magnetic fields. Our results open a path to engineering topological devices at higher temperatures.
تواريخ الأحداث:	Date Created: 20231207 Latest Revision: 20231221
رمز التحديث:	20231222
DOI:	10.1126/science.abl8371
PMID:	38060675
قاعدة البيانات:	MEDLINE

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تدمد:	1095-9203
DOI:	10.1126/science.abl8371