Correlated insulator of excitons in WSe2/WS2 moiré superlattices
A panoply of unconventional electronic states has been observed in moiré superlattices. Engineering similar bosonic phases remains, however, largely unexplored. We report the observation of a bosonic correlated insulator in tungsten diselenide/tungsten disulfide (WSe2/WS2) moiré superlattices composed of excitons, that is, tightly bound electron-hole pairs. We develop a pump probe spectroscopy method that we use to observe an exciton incompressible state at exciton filling νex = 1 and charge neutrality, indicating a correlated insulator of excitons. With varying charge density, the bosonic correlated insulator continuously transitions into an electron correlated insulator at charge filling νe = 1, suggesting a mixed correlated insulating state between the two limits. Our studies establish semiconducting moiré superlattices as an intriguing platform for engineering bosonic phases.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:380 |
|---|---|
| Enthalten in: |
Science (New York, N.Y.) - 380(2023), 6647 vom: 26. Mai, Seite 860-864 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Xiong, Richen [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Completed 28.05.2023 Date Revised 28.05.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1126/science.add5574 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM356702375 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM356702375 | ||
| 003 | DE-627 | ||
| 005 | 20231226071022.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1126/science.add5574 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1188.xml |
| 035 | |a (DE-627)NLM356702375 | ||
| 035 | |a (NLM)37167352 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Xiong, Richen |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Correlated insulator of excitons in WSe2/WS2 moiré superlattices |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 28.05.2023 | ||
| 500 | |a Date Revised 28.05.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a A panoply of unconventional electronic states has been observed in moiré superlattices. Engineering similar bosonic phases remains, however, largely unexplored. We report the observation of a bosonic correlated insulator in tungsten diselenide/tungsten disulfide (WSe2/WS2) moiré superlattices composed of excitons, that is, tightly bound electron-hole pairs. We develop a pump probe spectroscopy method that we use to observe an exciton incompressible state at exciton filling νex = 1 and charge neutrality, indicating a correlated insulator of excitons. With varying charge density, the bosonic correlated insulator continuously transitions into an electron correlated insulator at charge filling νe = 1, suggesting a mixed correlated insulating state between the two limits. Our studies establish semiconducting moiré superlattices as an intriguing platform for engineering bosonic phases | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Nie, Jacob H |e verfasserin |4 aut | |
| 700 | 1 | |a Brantly, Samuel L |e verfasserin |4 aut | |
| 700 | 1 | |a Hays, Patrick |e verfasserin |4 aut | |
| 700 | 1 | |a Sailus, Renee |e verfasserin |4 aut | |
| 700 | 1 | |a Watanabe, Kenji |e verfasserin |4 aut | |
| 700 | 1 | |a Taniguchi, Takashi |e verfasserin |4 aut | |
| 700 | 1 | |a Tongay, Sefaattin |e verfasserin |4 aut | |
| 700 | 1 | |a Jin, Chenhao |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Science (New York, N.Y.) |d 1880 |g 380(2023), 6647 vom: 26. Mai, Seite 860-864 |w (DE-627)NLM000023450 |x 1095-9203 |7 nnns |
| 773 | 1 | 8 | |g volume:380 |g year:2023 |g number:6647 |g day:26 |g month:05 |g pages:860-864 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1126/science.add5574 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 380 |j 2023 |e 6647 |b 26 |c 05 |h 860-864 | ||