Observation of Electrically Tunable van Hove Singularities in Twisted Bilayer Graphene from NanoARPES.
flat bands
nanoARPES
twisted bilayer graphene
van Hove singularitys
van der Waals heterostructures
Journal
Advanced materials (Deerfield Beach, Fla.)
ISSN: 1521-4095
Titre abrégé: Adv Mater
Pays: Germany
ID NLM: 9885358
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
received:
09
03
2020
revised:
30
04
2020
accepted:
14
05
2020
pubmed:
13
6
2020
medline:
13
6
2020
entrez:
13
6
2020
Statut:
ppublish
Résumé
The possibility of triggering correlated phenomena by placing a singularity of the density of states near the Fermi energy remains an intriguing avenue toward engineering the properties of quantum materials. Twisted bilayer graphene is a key material in this regard because the superlattice produced by the rotated graphene layers introduces a van Hove singularity and flat bands near the Fermi energy that cause the emergence of numerous correlated phases, including superconductivity. Direct demonstration of electrostatic control of the superlattice bands over a wide energy range has, so far, been critically missing. This work examines the effect of electrical doping on the electronic band structure of twisted bilayer graphene using a back-gated device architecture for angle-resolved photoemission measurements with a nano-focused light spot. A twist angle of 12.2° is selected such that the superlattice Brillouin zone is sufficiently large to enable identification of van Hove singularities and flat band segments in momentum space. The doping dependence of these features is extracted over an energy range of 0.4 eV, expanding the combinations of twist angle and doping where they can be placed at the Fermi energy and thereby induce new correlated electronic phases in twisted bilayer graphene.
Identifiants
pubmed: 32529706
doi: 10.1002/adma.202001656
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2001656Subventions
Organisme : Office of Science
Organisme : U.S. Department of Energy
ID : DE-SC0020323
Informations de copyright
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Références
J. L. McChesney, A. Bostwick, T. Ohta, T. Seyller, K. Horn, J. González, E. Rotenberg, Phys. Rev. Lett. 2010, 104, 136803.
G. Li, A. Luican, J. M. B. Lopes dos Santos, A. H. Castro Neto, A. Reina, J. Kong, E. Y. Andrei, Nat. Phys. 2010, 6, 109.
J. M. B. Lopes dos Santos, N. M. R. Peres, A. H. Castro Neto, Phys. Rev. Lett. 2007, 99, 256802.
R. Bistritzer, A. H. MacDonald, Proc. Natl. Acad. Sci. USA 2011, 108, 12233.
E. Suárez Morell, J. D. Correa, P. Vargas, M. Pacheco, Z. Barticevic, Phys. Rev. B 2010, 82, 121407.
J. M. B. Lopes dos Santos, N. M. R. Peres, A. H. Castro Neto, Phys. Rev. B 2012, 86, 155449.
C.-C. Liu, L.-D. Zhang, W.-Q. Chen, F. Yang, Phys. Rev. Lett. 2018, 121, 217001.
H. Isobe, N. F. Q. Yuan, L. Fu, Phys. Rev. X 2018, 8, 041041.
Y. Cao, J. Y. Luo, V. Fatemi, S. Fang, J. D. Sanchez-Yamagishi, K. Watanabe, T. Taniguchi, E. Kaxiras, P. Jarillo-Herrero, Phys. Rev. Lett. 2016, 117, 116804.
K. Kim, A. DaSilva, S. Huang, B. Fallahazad, S. Larentis, T. Taniguchi, K. Watanabe, B. J. LeRoy, A. H. MacDonald, E. Tutuc, Proc. Natl. Acad. Sci. USA 2017, 114, 3364.
Y. Cao, V. Fatemi, A. Demir, S. Fang, S. L. Tomarken, J. Y. Luo, J. D. Sanchez-Yamagishi, K. Watanabe, T. Taniguchi, E. Kaxiras, R. C. Ashoori, P. Jarillo-Herrero, Nature 2018, 556, 80.
Y. Cao, V. Fatemi, S. Fang, K. Watanabe, T. Taniguchi, E. Kaxiras, P. Jarillo-Herrero, Nature 2018, 556, 43.
M. Yankowitz, S. Chen, H. Polshyn, Y. Zhang, K. Watanabe, T. Taniguchi, D. Graf, A. F. Young, C. R. Dean, Science 2019, 363, 1059.
X. Lu, P. Stepanov, W. Yang, M. Xie, M. A. Aamir, I. Das, C. Urgell, K. Watanabe, T. Taniguchi, G. Zhang, A. Bachtold, A. H. MacDonald, D. K. Efetov, Nature 2019, 574, 653.
A. Kerelsky, L. J. McGilly, D. M. Kennes, L. Xian, M. Yankowitz, S. Chen, K. Watanabe, T. Taniguchi, J. Hone, C. Dean, A. Rubio, A. N. Pasupathy, Nature 2019, 572, 95.
Y. Xie, B. Lian, B. Jäck, X. Liu, C.-L. Chiu, K. Watanabe, T. Taniguchi, B. A. Bernevig, A. Yazdani, Nature 2019, 572, 101.
Y. Jiang, X. Lai, K. Watanabe, T. Taniguchi, K. Haule, J. Mao, E. Y. Andrei, Nature 2019, 573, 91.
Y. Choi, J. Kemmer, Y. Peng, A. Thomson, H. Arora, R. Polski, Y. Zhang, H. Ren, J. Alicea, G. Refael, F. von Oppen, K. Watanabe, T. Taniguchi, S. Nadj-Perge, Nat. Phys. 2019, 15, 1174.
G. Trambly de Laissardière, D. Mayou, L. Magaud, Phys. Rev. B 2012, 86, 125413.
C. J. Tabert, E. J. Nicol, Phys. Rev. B 2013, 87, 121402.
R. W. Havener, Y. Liang, L. Brown, L. Yang, J. Park, Nano Lett. 2014, 14, 3353.
F. Hu, S. R. Das, Y. Luan, T.-F. Chung, Y. P. Chen, Z. Fei, Phys. Rev. Lett. 2017, 119, 247402.
A. Jorio, M. Kasperczyk, N. Clark, E. Neu, P. Maletinsky, A. Vijayaraghavan, L. Novotny, Nano Lett. 2014, 14, 5687.
H. Patel, R. W. Havener, L. Brown, Y. Liang, L. Yang, J. Park, M. W. Graham, Nano Lett. 2015, 15, 5932.
H. Patel, L. Huang, C.-J. Kim, J. Park, M. W. Graham, Nat. Commun. 2019, 10, 1445.
K. Yu, N. Van Luan, T. Kim, J. Jeon, J. Kim, P. Moon, Y. H. Lee, E. J. Choi, Phys. Rev. B 2019, 99, 241405.
S. Ulstrup, J. C. Johannsen, F. Cilento, J. A. Miwa, A. Crepaldi, M. Zacchigna, C. Cacho, R. Chapman, E. Springate, S. Mammadov, F. Fromm, C. Raidel, T. Seyller, F. Parmigiani, M. Grioni, P. D. C. King, P. Hofmann, Phys. Rev. Lett. 2014, 112, 257401.
T. Ohta, J. T. Robinson, P. J. Feibelman, A. Bostwick, E. Rotenberg, T. E. Beechem, Phys. Rev. Lett. 2012, 109, 186807.
H. Peng, N. B. M. Schröter, J. Yin, H. Wang, T.-F. Chung, H. Yang, S. Ekahana, Z. Liu, J. Jiang, L. Yang, T. Zhang, C. Chen, H. Ni, A. Barinov, Y. P. Chen, Z. Liu, H. Peng, Y. Chen, Adv. Mater. 2017, 29, 1606741.
M. I. B. Utama, R. J. Koch, K. Lee, N. Leconte, H. Li, S. Zhao, L. Jiang, J. Zhu, K. Watanabe, T. Taniguchi, P. D. Ashby, A. Weber-Bargioni, A. Zettl, C. Jozwiak, J. Jung, E. Rotenberg, A. Bostwick, F. Wang, arXiv:1912.00587, 2019.
S. Lisi, X. Lu, T. Benschop, T. A. de Jong, P. Stepanov, J. R. Duran, F. Margot, I. Cucchi, E. Cappelli, A. Hunter, A. Tamai, V. Kandyba, A. Giampietri, A. Barinov, J. Jobst, V. Stalman, M. Leeuwenhoek, K. Watanabe, T. Taniguchi, L. Rademaker, S. J. van der Molen, M. Allan, D. K. Efetov, F. Baumberger, arXiv:2002.02289, 2020.
P. V. Nguyen, N. C. Teutsch, N. P. Wilson, J. Kahn, X. Xia, A. J. Graham, V. Kandyba, A. Giampietri, A. Barinov, G. C. Constantinescu, N. Yeung, N. D. M. Hine, X. Xu, D. H. Cobden, N. R. Wilson, Nature 2019, 572, 220.
R. Muzzio, A. J. H. Jones, D. Curcio, D. Biswas, J. A. Miwa, P. Hofmann, K. Watanabe, T. Taniguchi, S. Singh, C. Jozwiak, E. Rotenberg, A. Bostwick, R. J. Koch, S. Ulstrup, J. Katoch, Phys. Rev. B 2020, 101, 201409(R).
F. Joucken, J. Avila, Z. Ge, E. A. Quezada-Lopez, H. Yi, R. Le Goff, E. Baudin, J. L. Davenport, K. Watanabe, T. Taniguchi, M. C. Asensio, J. Velasco, Nano Lett. 2019, 19, 2682.
F. Joucken, E. A. Quezada-López, J. Avila, C. Chen, J. L. Davenport, H. Chen, K. Watanabe, T. Taniguchi, M. C. Asensio, J. Velasco, Phys. Rev. B 2019, 99, 161406.
Y. Zhu, S. Murali, M. D. Stoller, K. J. Ganesh, W. Cai, P. J. Ferreira, A. Pirkle, R. M. Wallace, K. A. Cychosz, M. Thommes, D. Su, E. A. Stach, R. S. Ruoff, Science 2011, 332, 1537.
X. Li, C. W. Magnuson, A. Venugopal, R. M. Tromp, J. B. Hannon, E. M. Vogel, L. Colombo, R. S. Ruoff, J. Am. Chem. Soc. 2011, 133, 2816.
J. Katoch, S. Ulstrup, R. J. Koch, S. Moser, K. M. McCreary, S. Singh, J. Xu, B. T. Jonker, R. K. Kawakami, A. Bostwick, E. Rotenberg, C. Jozwiak, Nat. Phys. 2018, 14, 355.
A. K. Patra, S. Singh, B. Barin, Y. Lee, J.-H. Ahn, E. del Barco, E. R. Mucciolo, B. Özyilmaz, Appl. Phys. Lett. 2012, 101, 162407.
J. T. Robinson, S. W. Schmucker, C. B. Diaconescu, J. P. Long, J. C. Culbertson, T. Ohta, A. L. Friedman, T. E. Beechem, ACS Nano 2013, 7, 637.
T. E. Beechem, T. Ohta, B. Diaconescu, J. T. Robinson, ACS Nano 2014, 8, 1655.
G. Kresse, J. Furthmüller, Comp. Mater. Sci. 1996, 6, 15.
G. Kresse, D. Joubert, Phys. Rev. B 1999, 59, 1758.
J. P. Perdew, K. Burke, M. Ernzerhof, Phys. Rev. Lett. 1996, 77, 3865.
H. J. Monkhorst, J. D. Pack, Phys. Rev. B 1976, 13, 5188.
S. Grimme, J. Comput. Chem. 2006, 27, 1787.