Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe
[Display omitted] We report time- and angle-resolved photoemission spectroscopy on SnSe which currently attracts great interest due to its extremely high thermoelectric performance. Laser-assisted photoemission signals are observed within ±20 fs of the pump pulse arrival. Around 30–50 fs after the p...
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| Veröffentlicht in: | Scripta materialia 2023-01, Vol.223 (C), p.115081, Article 115081 |
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| creator | Okawa, Mario Akabane, Yuka Maeda, Mizuki Tan, Gangjian Zhao, Li-Dong Kanatzidis, Mercouri G. Suzuki, Takeshi Watanabe, Mari Xu, Jiadi Ren, Qianhui Fujisawa, Masami Kanai, Teruto Itatani, Jiro Shin, Shik Okazaki, Kozo Saini, Naurang L. Mizokawa, Takashi |
| description | [Display omitted]
We report time- and angle-resolved photoemission spectroscopy on SnSe which currently attracts great interest due to its extremely high thermoelectric performance. Laser-assisted photoemission signals are observed within ±20 fs of the pump pulse arrival. Around 30–50 fs after the photoexcitation, the conduction band minima are not populated by the photoexcited electrons while the valence bands are considerably broadened. In going from 90 fs to 550 fs after the photoexcitation, the photoexcited carriers are decayed into the multiple conduction band minima. The observed conduction bands are consistent with the band structure calculations. The multiple conduction minima suggest possibility of high and anisotropic thermoelectric performance of n-type SnSe single crystal if it is realized. |
| doi_str_mv | 10.1016/j.scriptamat.2022.115081 |
| format | Article |
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We report time- and angle-resolved photoemission spectroscopy on SnSe which currently attracts great interest due to its extremely high thermoelectric performance. Laser-assisted photoemission signals are observed within ±20 fs of the pump pulse arrival. Around 30–50 fs after the photoexcitation, the conduction band minima are not populated by the photoexcited electrons while the valence bands are considerably broadened. In going from 90 fs to 550 fs after the photoexcitation, the photoexcited carriers are decayed into the multiple conduction band minima. The observed conduction bands are consistent with the band structure calculations. The multiple conduction minima suggest possibility of high and anisotropic thermoelectric performance of n-type SnSe single crystal if it is realized.</description><identifier>ISSN: 1359-6462</identifier><identifier>EISSN: 1872-8456</identifier><identifier>DOI: 10.1016/j.scriptamat.2022.115081</identifier><language>eng</language><publisher>United States: Elsevier Ltd</publisher><subject>Angle-resolved photoemission sepctroscopy (ARPES) ; Dynamic phenomena ; Electronic structure ; Semiconductor ; Thermoelectric materials</subject><ispartof>Scripta materialia, 2023-01, Vol.223 (C), p.115081, Article 115081</ispartof><rights>2022 Acta Materialia Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c461t-331bb9da1cb572f8c6e6e62afeff3814821d6a389f1e13de87d40ae65acb84993</citedby><cites>FETCH-LOGICAL-c461t-331bb9da1cb572f8c6e6e62afeff3814821d6a389f1e13de87d40ae65acb84993</cites><orcidid>0000-0003-3684-1517 ; 0000-0003-1261-7131 ; 0000-0001-6540-8988 ; 0000000336841517 ; 0000000165408988 ; 0000000312617131</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.scriptamat.2022.115081$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,315,781,785,886,3551,27929,27930,46000</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1894175$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Okawa, Mario</creatorcontrib><creatorcontrib>Akabane, Yuka</creatorcontrib><creatorcontrib>Maeda, Mizuki</creatorcontrib><creatorcontrib>Tan, Gangjian</creatorcontrib><creatorcontrib>Zhao, Li-Dong</creatorcontrib><creatorcontrib>Kanatzidis, Mercouri G.</creatorcontrib><creatorcontrib>Suzuki, Takeshi</creatorcontrib><creatorcontrib>Watanabe, Mari</creatorcontrib><creatorcontrib>Xu, Jiadi</creatorcontrib><creatorcontrib>Ren, Qianhui</creatorcontrib><creatorcontrib>Fujisawa, Masami</creatorcontrib><creatorcontrib>Kanai, Teruto</creatorcontrib><creatorcontrib>Itatani, Jiro</creatorcontrib><creatorcontrib>Shin, Shik</creatorcontrib><creatorcontrib>Okazaki, Kozo</creatorcontrib><creatorcontrib>Saini, Naurang L.</creatorcontrib><creatorcontrib>Mizokawa, Takashi</creatorcontrib><title>Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe</title><title>Scripta materialia</title><description>[Display omitted]
We report time- and angle-resolved photoemission spectroscopy on SnSe which currently attracts great interest due to its extremely high thermoelectric performance. Laser-assisted photoemission signals are observed within ±20 fs of the pump pulse arrival. Around 30–50 fs after the photoexcitation, the conduction band minima are not populated by the photoexcited electrons while the valence bands are considerably broadened. In going from 90 fs to 550 fs after the photoexcitation, the photoexcited carriers are decayed into the multiple conduction band minima. The observed conduction bands are consistent with the band structure calculations. The multiple conduction minima suggest possibility of high and anisotropic thermoelectric performance of n-type SnSe single crystal if it is realized.</description><subject>Angle-resolved photoemission sepctroscopy (ARPES)</subject><subject>Dynamic phenomena</subject><subject>Electronic structure</subject><subject>Semiconductor</subject><subject>Thermoelectric materials</subject><issn>1359-6462</issn><issn>1872-8456</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqFkE1PwzAMhisEEmPwHyLuHXHapukRxqc0icPgiKI0dWimtZmSbBL_nowicUQ-2LLs136fLCNAF0CB32wWQXu7i2pQccEoYwuAigo4yWYgapaLsuKnqS6qJuclZ-fZRQgbSikHBrPs49561JG4NqA_qGjdSJwhw34b7W6LRLux2-tjO2_V2JHBjnZQxI6kt599vkNvnB_UqJHEHv3gcJvkvNVkPa7xMjszahvw6jfPs_fHh7flc756fXpZ3q5yXXKIeVFA2zadAt1WNTNCc0zBlEFjCgGlYNBxVYjGAELRoai7kirkldKtKJummGfXk64L0cqgbUTdp9fH9IsE0ZRQV2lITEPauxA8GrnzyYv_kkDlkaXcyD-W8shSTizT6t20isnEwaI_3sBkuvuhJztn_xf5BngAhKE</recordid><startdate>20230115</startdate><enddate>20230115</enddate><creator>Okawa, Mario</creator><creator>Akabane, Yuka</creator><creator>Maeda, Mizuki</creator><creator>Tan, Gangjian</creator><creator>Zhao, Li-Dong</creator><creator>Kanatzidis, Mercouri G.</creator><creator>Suzuki, Takeshi</creator><creator>Watanabe, Mari</creator><creator>Xu, Jiadi</creator><creator>Ren, Qianhui</creator><creator>Fujisawa, Masami</creator><creator>Kanai, Teruto</creator><creator>Itatani, Jiro</creator><creator>Shin, Shik</creator><creator>Okazaki, Kozo</creator><creator>Saini, Naurang L.</creator><creator>Mizokawa, Takashi</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-3684-1517</orcidid><orcidid>https://orcid.org/0000-0003-1261-7131</orcidid><orcidid>https://orcid.org/0000-0001-6540-8988</orcidid><orcidid>https://orcid.org/0000000336841517</orcidid><orcidid>https://orcid.org/0000000165408988</orcidid><orcidid>https://orcid.org/0000000312617131</orcidid></search><sort><creationdate>20230115</creationdate><title>Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe</title><author>Okawa, Mario ; Akabane, Yuka ; Maeda, Mizuki ; Tan, Gangjian ; Zhao, Li-Dong ; Kanatzidis, Mercouri G. ; Suzuki, Takeshi ; Watanabe, Mari ; Xu, Jiadi ; Ren, Qianhui ; Fujisawa, Masami ; Kanai, Teruto ; Itatani, Jiro ; Shin, Shik ; Okazaki, Kozo ; Saini, Naurang L. ; Mizokawa, Takashi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c461t-331bb9da1cb572f8c6e6e62afeff3814821d6a389f1e13de87d40ae65acb84993</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Angle-resolved photoemission sepctroscopy (ARPES)</topic><topic>Dynamic phenomena</topic><topic>Electronic structure</topic><topic>Semiconductor</topic><topic>Thermoelectric materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Okawa, Mario</creatorcontrib><creatorcontrib>Akabane, Yuka</creatorcontrib><creatorcontrib>Maeda, Mizuki</creatorcontrib><creatorcontrib>Tan, Gangjian</creatorcontrib><creatorcontrib>Zhao, Li-Dong</creatorcontrib><creatorcontrib>Kanatzidis, Mercouri G.</creatorcontrib><creatorcontrib>Suzuki, Takeshi</creatorcontrib><creatorcontrib>Watanabe, Mari</creatorcontrib><creatorcontrib>Xu, Jiadi</creatorcontrib><creatorcontrib>Ren, Qianhui</creatorcontrib><creatorcontrib>Fujisawa, Masami</creatorcontrib><creatorcontrib>Kanai, Teruto</creatorcontrib><creatorcontrib>Itatani, Jiro</creatorcontrib><creatorcontrib>Shin, Shik</creatorcontrib><creatorcontrib>Okazaki, Kozo</creatorcontrib><creatorcontrib>Saini, Naurang L.</creatorcontrib><creatorcontrib>Mizokawa, Takashi</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Scripta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Okawa, Mario</au><au>Akabane, Yuka</au><au>Maeda, Mizuki</au><au>Tan, Gangjian</au><au>Zhao, Li-Dong</au><au>Kanatzidis, Mercouri G.</au><au>Suzuki, Takeshi</au><au>Watanabe, Mari</au><au>Xu, Jiadi</au><au>Ren, Qianhui</au><au>Fujisawa, Masami</au><au>Kanai, Teruto</au><au>Itatani, Jiro</au><au>Shin, Shik</au><au>Okazaki, Kozo</au><au>Saini, Naurang L.</au><au>Mizokawa, Takashi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe</atitle><jtitle>Scripta materialia</jtitle><date>2023-01-15</date><risdate>2023</risdate><volume>223</volume><issue>C</issue><spage>115081</spage><pages>115081-</pages><artnum>115081</artnum><issn>1359-6462</issn><eissn>1872-8456</eissn><abstract>[Display omitted]
We report time- and angle-resolved photoemission spectroscopy on SnSe which currently attracts great interest due to its extremely high thermoelectric performance. Laser-assisted photoemission signals are observed within ±20 fs of the pump pulse arrival. Around 30–50 fs after the photoexcitation, the conduction band minima are not populated by the photoexcited electrons while the valence bands are considerably broadened. In going from 90 fs to 550 fs after the photoexcitation, the photoexcited carriers are decayed into the multiple conduction band minima. The observed conduction bands are consistent with the band structure calculations. The multiple conduction minima suggest possibility of high and anisotropic thermoelectric performance of n-type SnSe single crystal if it is realized.</abstract><cop>United States</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.scriptamat.2022.115081</doi><orcidid>https://orcid.org/0000-0003-3684-1517</orcidid><orcidid>https://orcid.org/0000-0003-1261-7131</orcidid><orcidid>https://orcid.org/0000-0001-6540-8988</orcidid><orcidid>https://orcid.org/0000000336841517</orcidid><orcidid>https://orcid.org/0000000165408988</orcidid><orcidid>https://orcid.org/0000000312617131</orcidid><oa>free_for_read</oa></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Angle-resolved photoemission sepctroscopy (ARPES) Dynamic phenomena Electronic structure Semiconductor Thermoelectric materials |
| title | Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe |
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