Broadband optical conductivity of the chiral multifold semimetal PdGa
We present an optical conductivity study of the multifold semimetal PdGa, performed in a broad spectral range (100 – 20 000 cm−1; 12 meV–2.5 eV) down to T = 10 K. The conductivity at frequencies below 4000 cm − 1 is dominated by free carriers while at higher frequencies interband transitions provide...
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| Veröffentlicht in: | Physical review. B 2021-03, Vol.103 (11), p.1, Article 115206 |
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| container_title | Physical review. B |
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| creator | Maulana, L. Z. Li, Z. Uykur, E. Manna, K. Polatkan, S. Felser, C. Dressel, M. Pronin, A. V. |
| description | We present an optical conductivity study of the multifold semimetal PdGa, performed in a broad spectral range (100 – 20 000 cm−1; 12 meV–2.5 eV) down to T = 10 K. The conductivity at frequencies below 4000 cm − 1 is dominated by free carriers while at higher frequencies interband transitions provide the major contribution. The spectra do not demonstrate a significant temperature evolution: Only the intraband part changes as a function of temperature with the plasma frequency remaining constant. The interband contribution to the conductivity exhibits a broad peak at around 5500 cm−1 and increases basically monotonously at frequencies above 9000 cm−1. The band-structure-based computations reproduce these features of the interband conductivity and predict its linear-in-frequency behavior as frequency diminishes. |
| doi_str_mv | 10.1103/PhysRevB.103.115206 |
| format | Article |
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Z. ; Li, Z. ; Uykur, E. ; Manna, K. ; Polatkan, S. ; Felser, C. ; Dressel, M. ; Pronin, A. V.</creator><creatorcontrib>Maulana, L. Z. ; Li, Z. ; Uykur, E. ; Manna, K. ; Polatkan, S. ; Felser, C. ; Dressel, M. ; Pronin, A. V.</creatorcontrib><description>We present an optical conductivity study of the multifold semimetal PdGa, performed in a broad spectral range (100 – 20 000 cm−1; 12 meV–2.5 eV) down to T = 10 K. The conductivity at frequencies below 4000 cm − 1 is dominated by free carriers while at higher frequencies interband transitions provide the major contribution. The spectra do not demonstrate a significant temperature evolution: Only the intraband part changes as a function of temperature with the plasma frequency remaining constant. The interband contribution to the conductivity exhibits a broad peak at around 5500 cm−1 and increases basically monotonously at frequencies above 9000 cm−1. The band-structure-based computations reproduce these features of the interband conductivity and predict its linear-in-frequency behavior as frequency diminishes.</description><identifier>ISSN: 2469-9950</identifier><identifier>EISSN: 2469-9969</identifier><identifier>DOI: 10.1103/PhysRevB.103.115206</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Broadband ; Plasma frequencies</subject><ispartof>Physical review. 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The interband contribution to the conductivity exhibits a broad peak at around 5500 cm−1 and increases basically monotonously at frequencies above 9000 cm−1. The band-structure-based computations reproduce these features of the interband conductivity and predict its linear-in-frequency behavior as frequency diminishes.</description><subject>Broadband</subject><subject>Plasma frequencies</subject><issn>2469-9950</issn><issn>2469-9969</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNo9kFtLAzEQhYMoWGp_gS8LPm-dXHfzaEutgmARfV6yudCU3aYm2UL_vVuqPs2cM4c58CF0j2GOMdDHzfaUPuxxMR_F6HAC4gpNCBOylFLI6_-dwy2apbQDACxAViAnaLWIQZlW7U0RDtlr1RU67M2gsz_6fCqCK_LWFnrr43jqhy57FzpTJNv73ubR25i1ukM3TnXJzn7nFH09rz6XL-Xb-_p1-fRWalJVuSQth5piqAlnkqiKc1cbYyUlzlKoW8ckYGuxFIRDpVSrtKOVaKUWjLma0il6uPw9xPA92JSbXRjifqxsCMc1w4IJPqboJaVjSCla1xyi71U8NRiaM7LmD1lzFhdk9AfoW1_i</recordid><startdate>20210323</startdate><enddate>20210323</enddate><creator>Maulana, L. 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| language | eng |
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| subjects | Broadband Plasma frequencies |
| title | Broadband optical conductivity of the chiral multifold semimetal PdGa |
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