The Search for Novel Superconductors in Moire Flat Bands
The moire heterostructure engineering of 2-dimensional (2D) van der Waals (vdW) materials leads to quantum heterostructures. Utilizing recently demonstrated twisted vdW heteroepitaxy, the investigators will construct vdW homo/hetero structures to realize correlated electronic states that appear in the moire flat bands. With inputs from theory and mathematical modeling of multiscale electronic structure, the project will experimentally investigate multilayer 2D superconducting systems with unusual properties, such as gate tunable transition temperature and non-conventional pairing symmetries. Various material platforms will be explored including twisted double bilayer graphene, twisted trilayer graphene and twisted homo- and hetetro-structures based on transition metal dichalcogenides. Theoretical guidance will be an indispensable part of this study since there are a variety of choices for material platforms and twist angle which cannot be covered by experiment alone without targeted modeling guide. Unconventional superconductivity can also lead into the development and discovery of topological superconductors, which can be utilized for quantum computing. The qubits realized in topological superconducting systems hold promise for fault-tolerant quantum computation, thanks to the topological nature of the underlying quantum states.
Publications
Time-reversal symmetry breaking superconductivity between twisted cuprate superconductors
S. Y. F. Zhao, X. Cui, P. A. Volkov, H. Yoo, S. Lee, J. A. Gardener, A. J. Akey, R. Engelke, Y. Ronen, R. Zhong, G. Gu, S. Plugge, T. Tummuru, M. Kim, M. Franz, J. H. Pixley, N. Poccia, and P. Kim
12/22/2023
Selective manipulation and tunneling spectroscopy of broken-symmetry quantum Hall states in a hybrid-edge quantum point contact
W. Ren, X. Zhang, J. Ma, X. Han, K. Watanabe, T. Taniguchi, and K. Wang
12/22/2023
Modulating the Electrochemical Intercalation of Graphene Interfaces with α-RuCl3 as a Solid-State Electron Acceptor
J. Nessralla, D. T. Larson, T. Taniguchi, K. Watanabe, E. Kaxiras, and D. K. Bediako
11/13/2023
HubbardNet: Efficient predictions of the Bose-Hubbard model spectrum with deep neural networks
Z. Zhu, M. Mattheakis, W. Pan, and E. Kaxiras
10/26/2023
One-Dimensional Moiré Physics and Chemistry in Heterostrained Bilayer Graphene
G. R. Schleder, M. Pizzochero, and E. Kaxiras
9/27/2023
Theory of polarization textures in crystal supercells
D. Bennett, W. J. Jankowski, G. Chaudhary, E. Kaxiras, and R. Slager
9/26/2023
Topology of rotating stratified fluids with and without background shear flow
Z. Zhu, C. Li, and J. B. Marston
9/15/2023
Edge State Dynamics Along Curved Interfaces
G. Bal, S. Becker, A. Drouot, C. F. Kammerer, J. Lu, and A. B. Watson
9/12/2023
Mathematical aspects of the Kubo formula for electrical conductivity with dissipation
A. B. Watson, D. Margetis, and M. Luskin
9/1/2023
Operando electron microscopy investigation of polar domain dynamics in twisted van der Waals homobilayers
K. Ko, A. Yuk, R. Engelke, S. Carr, J. Kim, D. Park, H. Heo, H. Kim, S. Kim, H. Kim, T. Taniguchi, K. Watanabe, H. Park, E. Kaxiras, S. M. Yang, P. Kim, and H. Yoo
6/26/2023
Semiclassical electron and phonon transport from first principles: application to layered thermoelectrics
A. S. Chaves, M. Pizzochero, D. T. Larson, A. Antonelli, and E. Kaxiras
6/21/2023
Lattice Reconstruction in MoSe2–WSe2 Heterobilayers Synthesized by Chemical Vapor Deposition
Z. Li, F. Tabataba-Vakili, S. Zhao, A. Rupp, I. Bilgin, Z. Herdegen, B. März, K. Watanabe, T. Taniguchi, G. R. Schleder, A. S. Baimuratov, E. Kaxiras, K. Müller-Caspary, and A. Högele
5/4/2023
Relaxation and Domain Wall Structure of Bilayer Moiré Systems
P. Cazeaux, D. Clark, R. Engelke, P. Kim, and M. Luskin
4/25/2023
Domain-Dependent Surface Adhesion in Twisted Few-Layer Graphene: Platform for Moiré-Assisted Chemistry
V. Hsieh, D. Halbertal, N. R. Finney, Z. Zhu, E. Gerber, M. Pizzochero, E. Kucukbenli, G. R. Schleder, M. Angeli, K. Watanabe, T. Taniguchi, E. Kim, E. Kaxiras, J. Hone, C. R. Dean, and D. N. Basov
4/10/2023
Topological nature of dislocation networks in two-dimensional moiré materials
R. Engelke, H. Yoo, S. Carr, K. Xu, P. Cazeaux, R. Allen, A. M. Valdivia, M. Luskin, E. Kaxiras, M. Kim, J. H. Han, and P. Kim
3/16/2023
Bistritzer–MacDonald dynamics in twisted bilayer graphene
A. B. Watson, T. Kong, A. H. MacDonald, and M. Luskin
3/1/2023
Computing spectral properties of topological insulators without artificial truncation or supercell approximation
M. J. Colbrook, A. Horning, K. Thicke, and A. B. Watson
1/31/2023
Unveiling and Manipulating Hidden Symmetries in Graphene Nanoribbons
N. V. Tepliakov, J. Lischner, E. Kaxiras, A. A. Mostofi, and M. Pizzochero
1/12/2023
Seeing moiré: Convolutional network learning applied to twistronics
D. Liu, M. Luskin, and S. Carr
12/30/2022
Twistronics of Janus transition metal dichalcogenide bilayers
M. Angeli, G. R. Schleder, and E. Kaxiras
12/29/2022
Torsional periodic lattice distortions and diffraction of twisted 2D materials
S. H. Sung, Y. M. Goh, H. Yoo, R. Engelke, H. Xie, K. Zhang, Z. Li, A. Ye, P. B. Deotare, E. B. Tadmor, A. J. Mannix, J. Park, L. Zhao, P. Kim, and R. Hovden
12/19/2022
Modulation Doping of Single-Layer Semiconductors for Improved Contact at Metal Interfaces
Y. Cho, G. R. Schleder, D. T. Larson, E. Brutschea, K. Byun, H. Park, P. Kim, and E. Kaxiras
11/28/2022
Electric field tunable layer polarization in graphene/boron-nitride twisted quadrilayer superlattices
Z. Zhu, S. Carr, Q. Ma, and E. Kaxiras
11/21/2022
Gate-tunable Veselago interference in a bipolar graphene microcavity
X. Zhang, W. Ren, E. Bell, Z. Zhu, K. Tsai, Y. Luo, K. Watanabe, T. Taniguchi, E. Kaxiras, M. Luskin, and K. Wang
11/7/2022
Low-energy moiré phonons in twisted bilayer van der Waals heterostructures
J. Z. Lu, Z. Zhu, M. Angeli, D. T. Larson, and E. Kaxiras
10/10/2022
Out-of-plane thermoelectric performance for
p
-doped GeSe
A. S. Chaves, D. T. Larson, E. Kaxiras, and A. Antonelli
5/6/2022
Orderly disorder in magic-angle twisted trilayer graphene
S. Turkel, J. Swann, Z. Zhu, M. Christos, K. Watanabe, T. Taniguchi, S. Sachdev, M. S. Scheurer, E. Kaxiras, C. R. Dean, and A. N. Pasupathy
4/8/2022
Hydrogen Atoms on Zigzag Graphene Nanoribbons: Chemistry and Magnetism Meet at the Edge
M. Pizzochero, and E. Kaxiras
2/15/2022
Electronic thermal transport measurement in low-dimensional materials with graphene non-local noise thermometry
J. Waissman, L. E. Anderson, A. V. Talanov, Z. Yan, Y. J. Shin, D. H. Najafabadi, M. Rezaee, X. Feng, D. G. Nocera, T. Taniguchi, K. Watanabe, B. Skinner, K. A. Matveev, and P. Kim
11/15/2021
Electrically Induced Dirac Fermions in Graphene Nanoribbons
M. Pizzochero, N. V. Tepliakov, A. A. Mostofi, and E. Kaxiras
10/29/2021
Correlated Insulating States and Transport Signature of Superconductivity in Twisted Trilayer Graphene Superlattices
X. Zhang, K. Tsai, Z. Zhu, W. Ren, Y. Luo, S. Carr, M. Luskin, E. Kaxiras, and K. Wang
10/11/2021
Microscopic origin of the high thermoelectric figure of merit of
n
-doped SnSe
A. S. Chaves, D. T. Larson, E. Kaxiras, and A. Antonelli
9/24/2021
Existence of the first magic angle for the chiral model of bilayer graphene
A. B. Watson, and M. Luskin
9/1/2021
Spectroscopic Signatures of Interlayer Coupling in Janus MoSSe/MoS2 Heterostructures
K. Zhang, Y. Guo, D. T. Larson, Z. Zhu, S. Fang, E. Kaxiras, J. Kong, and S. Huang
8/31/2021
Electric field–tunable superconductivity in alternating-twist magic-angle trilayer graphene
Z. Hao, A. M. Zimmerman, P. Ledwith, E. Khalaf, D. H. Najafabadi, K. Watanabe, T. Taniguchi, A. Vishwanath, and P. Kim
3/12/2021
Dual-Gated Graphene Devices for Near-Field Nano-imaging
S. S. Sunku, D. Halbertal, R. Engelke, H. Yoo, N. R. Finney, N. Curreli, G. Ni, C. Tan, A. S. McLeod, C. F. B. Lo, C. R. Dean, J. C. Hone, P. Kim, and D. N. Basov
2/15/2021
Homogenization of hydrodynamic transport in Dirac fluids
G. Bal, A. Lucas, and M. Luskin
1/1/2021
High-bandwidth, variable-resistance differential noise thermometry
A. V. Talanov, J. Waissman, T. Taniguchi, K. Watanabe, and P. Kim
1/1/2021
Dipole excitation of collective modes in viscous two-dimensional electron systems
V. Andreeva, D. A. Bandurin, M. Luskin, and D. Margetis
11/10/2020
Twisted Trilayer Graphene: A Precisely Tunable Platform for Correlated Electrons
Z. Zhu, S. Carr, D. Massatt, M. Luskin, and E. Kaxiras
9/11/2020
Duality between atomic configurations and Bloch states in twistronic materials
S. Carr, D. Massatt, M. Luskin, and E. Kaxiras
7/29/2020
Image polaritons in boron nitride for extreme polariton confinement with low losses
I. Lee, M. He, X. Zhang, Y. Luo, S. Liu, J. H. Edgar, K. Wang, P. Avouris, T. Low, J. D. Caldwell, and S. Oh
7/20/2020
Modeling mechanical relaxation in incommensurate trilayer van der Waals heterostructures
Z. Zhu, P. Cazeaux, M. Luskin, and E. Kaxiras
6/8/2020
Efficient computation of Kubo conductivity for incommensurate 2D heterostructures
D. Massatt, S. Carr, and M. Luskin
4/1/2020
Modeling and Computation of Kubo Conductivity for Two-Dimensional Incommensurate Bilayers
S. Etter, D. Massatt, M. Luskin, and C. Ortner
1/1/2020
View All Publications
Research Highlights
Educating High School Students at the Interface of Applied Mathematics and 2D Quantum Physics
P. Kim, E. Kaxiras (Harvard) M. Luskin, K. Wang (U. Minnesota)
3/20/2018
Superconductivity in Twisted Trilayer Graphene
P. Kim, E. Kaxiras (Harvard) M. Luskin, K. Wang (U. Minnesota)
3/20/2018