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Suggested citation: National Academies of Sciences, Engineering, and Medicine. 2022. Frontiers in Synthetic Moiré Quantum Matter: Proceedings of a Workshop. Washington, DC: The National Academies Press. https://doi.org/10.17226/26594.

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FRONTIERS IN SYNTHETIC MOIRÉ QUANTUM MATTER WORKSHOP PLANNING COMMITTEEE

AHARON KAPITULNIK, NAS,¹ Stanford University, Chair

CHARLES AHN, Yale University

CLAUDIA A. FELSER, NAS/NAE,² Max Planck Institute for Chemical Physics of

Solids

PABLO JARILLO-HERRERO, Massachusetts Institute of Technology

Staff

NEERAJ P. GORKHALY, Associate Program Officer, Study Director

CHRISTOPHER JONES, Senior Program Officer

AMISHA JINANDRA, Associate Program Officer

LINDA WALKER, Program Coordinator

COLLEEN N. HARTMAN, Director (since April 2021)

JAMES LANCASTER, Director (until April 2021)

CONDENSED MATTER AND MATERIALS RESEARCH COMMITTEE

SUSAN COPPERSMITH, NAS,¹ University of Wisconsin–Madison, Chair

TOM WITTEN, University of Chicago, Vice Chair

CHARLES AHN, Yale University

RAYMUNDO ARROYAVE, Texas A&M University

KARIN DAHMEN, University of Illinois at Urbana-Champaign

THOMAS EPPS, University of Delaware

OLIVIA A. GRAEVE, University of California, San Diego

AHARON KAPITULNIK, NAS, Stanford University

ANTHONY KU, Independent Consultant

M. LISA MANNING, Syracuse University

CHARLES M. MARCUS, NAS, University of Copenhagen

NADYA MASON, NAS, University of Illinois at Urbana-Champaign

LESLIE MOMODA, HRL Laboratories

MONICA OLVERA DE LA CRUZ, NAS, Northwestern University

ANA MARIA REY, University of Colorado Boulder

STEVEN J. ZINKLE, University of Tennessee, Knoxville

Staff

CHRISTOPHER JONES, Senior Program Officer, Committee Director

NEERAJ P. GORKHALY, Associate Program Officer

AMISHA JINANDRA, Associate Program Officer

LINDA WALKER, Program Coordinator

COLLEEN N. HARTMAN, Director (since April 2021)

JAMES LANCASTER, Director (until April 2021)

BOARD ON PHYSICS AND ASTRONOMY

ANDREW LANKFORD, University of California, Irvine, Chair

MEIGEN ARONSON, University of British Columbia

WILLIAM BIALEK, NAS,¹ Princeton University

JILL DAHLBURG, U.S. Naval Research Laboratory

SALLY DAWSON, Brookhaven National Laboratory

LOUIS DIMAURO, The Ohio State University

CHUNG-PEI MA, University of California, Berkeley

ANDREW MILLIS, NAS, Columbia University

ANGELA VILLELA OLINTO, NAS, University of Chicago

DAVID REITZE, California Institute of Technology

SUNIL SINHA, University of California, San Diego

EDWARD THOMAS, JR., Auburn University

RISA H. WECHSLER, Stanford University

WILLIAM A. ZAJC, Columbia University

Staff

COLLEEN N. HARTMAN, Director (since April 2021)

JAMES LANCASTER, Director (until April 2021)

GREGORY MACK, Senior Program Officer (until July 2022)

CHRISTOPHER JONES, Senior Program Officer

NEERAJ P. GORKHALY, Associate Program Officer

AMISHA JINANDRA, Associate Program Officer

LINDA WALKER, Program Coordinator

RADAKA LIGHTFOOT, Financial Associate

DONALD SHAPERO, Senior Scholar

Acknowledgment of Reviewers

This Proceedings of a Workshop was reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise. The purpose of this independent review is to provide candid and critical comments that will assist the National Academies of Sciences, Engineering, and Medicine in making each published proceedings as sound as possible and to ensure that it meets the institutional standards for quality, objectivity, evidence, and responsiveness to the charge. The review comments and draft manuscript remain confidential to protect the integrity of the process.

We thank the following individuals for their review of this proceedings:

Although the reviewers listed above provided many constructive comments and suggestions, they were not asked to endorse the content of the proceedings nor did they see the final draft before its release. The review of this proceedings was overseen by Amir Yacoby, NAS,¹ Harvard University. He was responsible for making certain that an independent examination of this proceedings was carried out in accordance with standards of the National Academies and that all review comments were carefully considered. Responsibility for the final content rests entirely with the rapporteur and the National Academies.

Contents

1 SETTING THE STAGE

A New Platform

Magic-Angle Graphene and the Rise of Moiré Quantum Matter

Current Next-Generation Moiré Quantum Matter

Next Next-Generation Moiré Quantum Matter

References

2 THEORETICAL CONSIDERATIONS CONCERNING MOIRÉ QUANTUM MATERIALS

Understanding Flat Bands

Designing Flat Bands in Moiré Systems

Using Moiré Systems as a Quantum Simulator

Future Directions

References

3 TOPOLOGICAL TWISTRONICS

Analyzing a Twisted Heterostructure

Analyzing a Topological Insulator on a Patterned Dielectric

Future Directions

Question-and-Answer Session

References

4 DISCUSSION PERIOD

Overview

Question-and-Answer Period

References

5 CORRELATED OXIDES

FCGT: A Polar Magnetic Metal

From Transition Metal Dichalcogenides to Complex Oxides

Using Epitaxy to Create Complex Oxide Superlattices

Discussion

References

6 SLICING AND ALLOYING HALIDE PEROVSKITES

Creating Halide Perovskite Structures

Properties of Halide Perovskites

The Potential of Halide Perovskite Homo- and Heterostructures

Question-and-Answer Session

References

7 TOPOLOGICAL SUPERCONDUCTIVITY IN TWISTED CUPRATE DOUBLE LAYERS

Engineering a Bilayer Topological Superconductor

Theoretical Underpinnings

Experimental Efforts

Looking Ahead

Question-and-Answer Session

References

8 DISCUSSION PERIOD

Overview

Discussion

Reference

APPENDIXES

A Statement of Task

B Workshop Agenda

C Registered Workshop Participants

D Speaker and Planning Committee Biographical Information

E Acronyms and Abbreviations