Direction-Dependent Conduction Polarity in Altermagnetic CrSb
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866912475308359680 |
|---|---|
| author | Rai, Banik Patra, Krishnendu Bera, Satyabrata Kalimuddin, Sk Deb, Kakan Mondal, Mintu Mahadevan, Priya Kumar, Nitesh |
| author_facet | Rai, Banik Patra, Krishnendu Bera, Satyabrata Kalimuddin, Sk Deb, Kakan Mondal, Mintu Mahadevan, Priya Kumar, Nitesh |
| contents | CrSb has recently gained immense attention as an altermagnetic candidate. This work reports on the experimental observation of direction-dependent conduction polarity (DDCP) in altermagnetic CrSb through Hall and Seebeck thermopower measurements. Conduction is dominated by holes along the c-axis and by electrons in the ab-plane of the hexagonal crystal of CrSb. Density functional theory (DFT) calculations indicate that DDCP in CrSb arises from a multicarrier mechanism, where electrons and holes living in distinct bands dominate conduction along different crystallographic directions. Furthermore, DFT predicts that DDCP exists within a narrow energy window near the Fermi level and is sensitive to small doping levels. This prediction is experimentally validated by the loss of DDCP in hole-doped Cr$_{0.98}$V$_{0.02}$Sb. These findings highlight the potential for tunable electronic behavior in CrSb, offering promising avenues for applications in devices that require both p-type and n-type functionalities within a single material. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_02231 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Direction-Dependent Conduction Polarity in Altermagnetic CrSb Rai, Banik Patra, Krishnendu Bera, Satyabrata Kalimuddin, Sk Deb, Kakan Mondal, Mintu Mahadevan, Priya Kumar, Nitesh Materials Science CrSb has recently gained immense attention as an altermagnetic candidate. This work reports on the experimental observation of direction-dependent conduction polarity (DDCP) in altermagnetic CrSb through Hall and Seebeck thermopower measurements. Conduction is dominated by holes along the c-axis and by electrons in the ab-plane of the hexagonal crystal of CrSb. Density functional theory (DFT) calculations indicate that DDCP in CrSb arises from a multicarrier mechanism, where electrons and holes living in distinct bands dominate conduction along different crystallographic directions. Furthermore, DFT predicts that DDCP exists within a narrow energy window near the Fermi level and is sensitive to small doping levels. This prediction is experimentally validated by the loss of DDCP in hole-doped Cr$_{0.98}$V$_{0.02}$Sb. These findings highlight the potential for tunable electronic behavior in CrSb, offering promising avenues for applications in devices that require both p-type and n-type functionalities within a single material. |
| title | Direction-Dependent Conduction Polarity in Altermagnetic CrSb |
| topic | Materials Science |
| url | https://arxiv.org/abs/2502.02231 |