Search for near room-temperature superconductivity in B-doped Q-carbon
We present 1D, 2D and 3D structures of boron-doped Q-carbon with a higher superconducting transition temperature than the current value of 55 K in 25 at% B-doped amorphous Q-carbon. The higher transition temperature is predicted for 1D and 2D crystalline structures with increasing density of states...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-04-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21663831.2019.1569566 |
| _version_ | 1818502084871323648 |
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| author | J. Narayan R. Sachan A. Bhaumik |
| author_facet | J. Narayan R. Sachan A. Bhaumik |
| author_sort | J. Narayan |
| collection | DOAJ |
| description | We present 1D, 2D and 3D structures of boron-doped Q-carbon with a higher superconducting transition temperature than the current value of 55 K in 25 at% B-doped amorphous Q-carbon. The higher transition temperature is predicted for 1D and 2D crystalline structures with increasing density of states near the Fermi level through dopant trapping in substitutional sites. We have synthesized 50at% B-doped Q-carbon where diamond tetrahedra are arranged randomly and packed with over 80% efficiency to generate an amorphous structure. Detailed EELS measurements show higher density of states near the Fermi level above 90 K and preliminary transport data show signature of Tc above 100 K. |
| first_indexed | 2024-12-10T21:05:03Z |
| format | Article |
| id | doaj.art-eee92517aee048f3ace9522b484974c6 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-12-10T21:05:03Z |
| publishDate | 2019-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-eee92517aee048f3ace9522b484974c62022-12-22T01:33:39ZengTaylor & Francis GroupMaterials Research Letters2166-38312019-04-017416417210.1080/21663831.2019.15695661569566Search for near room-temperature superconductivity in B-doped Q-carbonJ. Narayan0R. Sachan1A. Bhaumik2North Carolina State UniversityNorth Carolina State UniversityNorth Carolina State UniversityWe present 1D, 2D and 3D structures of boron-doped Q-carbon with a higher superconducting transition temperature than the current value of 55 K in 25 at% B-doped amorphous Q-carbon. The higher transition temperature is predicted for 1D and 2D crystalline structures with increasing density of states near the Fermi level through dopant trapping in substitutional sites. We have synthesized 50at% B-doped Q-carbon where diamond tetrahedra are arranged randomly and packed with over 80% efficiency to generate an amorphous structure. Detailed EELS measurements show higher density of states near the Fermi level above 90 K and preliminary transport data show signature of Tc above 100 K.http://dx.doi.org/10.1080/21663831.2019.1569566High-temperature superconductorsQ-carbonBCS superconductivityCryo-EELS |
| spellingShingle | J. Narayan R. Sachan A. Bhaumik Search for near room-temperature superconductivity in B-doped Q-carbon Materials Research Letters High-temperature superconductors Q-carbon BCS superconductivity Cryo-EELS |
| title | Search for near room-temperature superconductivity in B-doped Q-carbon |
| title_full | Search for near room-temperature superconductivity in B-doped Q-carbon |
| title_fullStr | Search for near room-temperature superconductivity in B-doped Q-carbon |
| title_full_unstemmed | Search for near room-temperature superconductivity in B-doped Q-carbon |
| title_short | Search for near room-temperature superconductivity in B-doped Q-carbon |
| title_sort | search for near room temperature superconductivity in b doped q carbon |
| topic | High-temperature superconductors Q-carbon BCS superconductivity Cryo-EELS |
| url | http://dx.doi.org/10.1080/21663831.2019.1569566 |
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