Exciton interaction induced spin splitting in MoS$_2$ monolayer
By pumping nonresonantly a MoS$_2$ monolayer at $13$ K under a circularly polarized cw laser, we observe exciton energy redshifts that break the degeneracy between B excitons with opposite spin. The energy splitting increases monotonically with the laser power reaching as much as $18$ meV, while it...
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| creator | Li, Yao Li, G Zhai, Xiaokun Xiong, Shi Fu Liu, Hongjun Wang, Xiao Chen, Haitao Gao, Ying Zhang, Xiu Liu, Tong Ren, Yuan Ma, Xuekai Fu, Hongbin Gao, T |
| description | By pumping nonresonantly a MoS$_2$ monolayer at $13$ K under a circularly
polarized cw laser, we observe exciton energy redshifts that break the
degeneracy between B excitons with opposite spin. The energy splitting
increases monotonically with the laser power reaching as much as $18$ meV,
while it diminishes with the temperature. The phenomenon can be explained
theoretically by considering simultaneously the bandgap renormalization which
gives rise to the redshift and exciton-exciton Coulomb exchange interaction
which is responsible for the spin-dependent splitting. Our results offer a
simple scheme to control the valley degree of freedom in MoS$_2$ monolayer and
provide an accessible method in investigating many-body exciton exciton
interaction in such materials. |
| doi_str_mv | 10.48550/arxiv.2001.01459 |
| format | Article |
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polarized cw laser, we observe exciton energy redshifts that break the
degeneracy between B excitons with opposite spin. The energy splitting
increases monotonically with the laser power reaching as much as $18$ meV,
while it diminishes with the temperature. The phenomenon can be explained
theoretically by considering simultaneously the bandgap renormalization which
gives rise to the redshift and exciton-exciton Coulomb exchange interaction
which is responsible for the spin-dependent splitting. Our results offer a
simple scheme to control the valley degree of freedom in MoS$_2$ monolayer and
provide an accessible method in investigating many-body exciton exciton
interaction in such materials.</description><identifier>DOI: 10.48550/arxiv.2001.01459</identifier><language>eng</language><subject>Physics - Mesoscale and Nanoscale Physics</subject><creationdate>2020-01</creationdate><rights>http://creativecommons.org/licenses/by/4.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2001.01459$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2001.01459$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Yao</creatorcontrib><creatorcontrib>Li, G</creatorcontrib><creatorcontrib>Zhai, Xiaokun</creatorcontrib><creatorcontrib>Xiong, Shi Fu</creatorcontrib><creatorcontrib>Liu, Hongjun</creatorcontrib><creatorcontrib>Wang, Xiao</creatorcontrib><creatorcontrib>Chen, Haitao</creatorcontrib><creatorcontrib>Gao, Ying</creatorcontrib><creatorcontrib>Zhang, Xiu</creatorcontrib><creatorcontrib>Liu, Tong</creatorcontrib><creatorcontrib>Ren, Yuan</creatorcontrib><creatorcontrib>Ma, Xuekai</creatorcontrib><creatorcontrib>Fu, Hongbin</creatorcontrib><creatorcontrib>Gao, T</creatorcontrib><title>Exciton interaction induced spin splitting in MoS$_2$ monolayer</title><description>By pumping nonresonantly a MoS$_2$ monolayer at $13$ K under a circularly
polarized cw laser, we observe exciton energy redshifts that break the
degeneracy between B excitons with opposite spin. The energy splitting
increases monotonically with the laser power reaching as much as $18$ meV,
while it diminishes with the temperature. The phenomenon can be explained
theoretically by considering simultaneously the bandgap renormalization which
gives rise to the redshift and exciton-exciton Coulomb exchange interaction
which is responsible for the spin-dependent splitting. Our results offer a
simple scheme to control the valley degree of freedom in MoS$_2$ monolayer and
provide an accessible method in investigating many-body exciton exciton
interaction in such materials.</description><subject>Physics - Mesoscale and Nanoscale Physics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotjz1vwjAURb10QJQfwNQMrAkvsR37TVWF-KgE6lD26MVxKkvBQcYg-PdA6HLv1RmudBib5pAJLSXMKVzdJSsA8gxyIXHEPpdX42LvE-ejDWSiG3ZzNrZJTkfnH9G5GJ3_e-Bk1__OqmKWHHrfd3Sz4Z29tdSd7OS_x2y_Wu4Xm3T7s_5efG1TKhWmwipeloZQNRIQJFGNVlmsgbc51LyQ2hpA0k1rsDVaCi1QkSIsaoVK8DH7eN0OBtUxuAOFW_U0qQYTfgesY0MQ</recordid><startdate>20200106</startdate><enddate>20200106</enddate><creator>Li, Yao</creator><creator>Li, G</creator><creator>Zhai, Xiaokun</creator><creator>Xiong, Shi Fu</creator><creator>Liu, Hongjun</creator><creator>Wang, Xiao</creator><creator>Chen, Haitao</creator><creator>Gao, Ying</creator><creator>Zhang, Xiu</creator><creator>Liu, Tong</creator><creator>Ren, Yuan</creator><creator>Ma, Xuekai</creator><creator>Fu, Hongbin</creator><creator>Gao, T</creator><scope>GOX</scope></search><sort><creationdate>20200106</creationdate><title>Exciton interaction induced spin splitting in MoS$_2$ monolayer</title><author>Li, Yao ; Li, G ; Zhai, Xiaokun ; Xiong, Shi Fu ; Liu, Hongjun ; Wang, Xiao ; Chen, Haitao ; Gao, Ying ; Zhang, Xiu ; Liu, Tong ; Ren, Yuan ; Ma, Xuekai ; Fu, Hongbin ; Gao, T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a679-4e7366ca97d50905aab9e7e9b03f10b3258ec09a8dfc9fc8548497a7a92b79743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Physics - Mesoscale and Nanoscale Physics</topic><toplevel>online_resources</toplevel><creatorcontrib>Li, Yao</creatorcontrib><creatorcontrib>Li, G</creatorcontrib><creatorcontrib>Zhai, Xiaokun</creatorcontrib><creatorcontrib>Xiong, Shi Fu</creatorcontrib><creatorcontrib>Liu, Hongjun</creatorcontrib><creatorcontrib>Wang, Xiao</creatorcontrib><creatorcontrib>Chen, Haitao</creatorcontrib><creatorcontrib>Gao, Ying</creatorcontrib><creatorcontrib>Zhang, Xiu</creatorcontrib><creatorcontrib>Liu, Tong</creatorcontrib><creatorcontrib>Ren, Yuan</creatorcontrib><creatorcontrib>Ma, Xuekai</creatorcontrib><creatorcontrib>Fu, Hongbin</creatorcontrib><creatorcontrib>Gao, T</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Li, Yao</au><au>Li, G</au><au>Zhai, Xiaokun</au><au>Xiong, Shi Fu</au><au>Liu, Hongjun</au><au>Wang, Xiao</au><au>Chen, Haitao</au><au>Gao, Ying</au><au>Zhang, Xiu</au><au>Liu, Tong</au><au>Ren, Yuan</au><au>Ma, Xuekai</au><au>Fu, Hongbin</au><au>Gao, T</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Exciton interaction induced spin splitting in MoS$_2$ monolayer</atitle><date>2020-01-06</date><risdate>2020</risdate><abstract>By pumping nonresonantly a MoS$_2$ monolayer at $13$ K under a circularly
polarized cw laser, we observe exciton energy redshifts that break the
degeneracy between B excitons with opposite spin. The energy splitting
increases monotonically with the laser power reaching as much as $18$ meV,
while it diminishes with the temperature. The phenomenon can be explained
theoretically by considering simultaneously the bandgap renormalization which
gives rise to the redshift and exciton-exciton Coulomb exchange interaction
which is responsible for the spin-dependent splitting. Our results offer a
simple scheme to control the valley degree of freedom in MoS$_2$ monolayer and
provide an accessible method in investigating many-body exciton exciton
interaction in such materials.</abstract><doi>10.48550/arxiv.2001.01459</doi><oa>free_for_read</oa></addata></record> |
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| title | Exciton interaction induced spin splitting in MoS$_2$ monolayer |
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