Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6}
Cr_{2}Ge_{2}Te_{6} is a quasi-two-dimensional semiconducting van der Waals ferromagnet down to the bilayer with great potential for technological applications. Engineering the critical temperature to achieve room-temperature applications is one of the critical next steps on this path. Here, we repor...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2022-05-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.4.L022040 |
| _version_ | 1797210716149645312 |
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| author | S. Spachmann A. Elghandour S. Selter B. Büchner S. Aswartham R. Klingeler |
| author_facet | S. Spachmann A. Elghandour S. Selter B. Büchner S. Aswartham R. Klingeler |
| author_sort | S. Spachmann |
| collection | DOAJ |
| description | Cr_{2}Ge_{2}Te_{6} is a quasi-two-dimensional semiconducting van der Waals ferromagnet down to the bilayer with great potential for technological applications. Engineering the critical temperature to achieve room-temperature applications is one of the critical next steps on this path. Here, we report high-resolution capacitance dilatometry studies on Cr_{2}Ge_{2}Te_{6} single crystals which directly prove significant magnetoelastic coupling and provide quantitative values of the large uniaxial pressure effects on long-range magnetic order (∂T_{C}/∂p_{c}=24.7 K/GPa and ∂T_{C}/∂p_{ab}=−15.6 K/GPa) derived from thermodynamic relations. Moderate in-plane strain is thus sufficient to strongly enhance ferromagnetism in Cr_{2}Ge_{2}Te_{6} up to room temperature. Moreover, unambiguous signs of short-range magnetic order up to 200 K are found. |
| first_indexed | 2024-04-24T10:15:01Z |
| format | Article |
| id | doaj.art-4395d3a7230a4dc8bc54a24f61b4183e |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:15:01Z |
| publishDate | 2022-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-4395d3a7230a4dc8bc54a24f61b4183e2024-04-12T17:21:04ZengAmerican Physical SocietyPhysical Review Research2643-15642022-05-0142L02204010.1103/PhysRevResearch.4.L022040Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6}S. SpachmannA. ElghandourS. SelterB. BüchnerS. AswarthamR. KlingelerCr_{2}Ge_{2}Te_{6} is a quasi-two-dimensional semiconducting van der Waals ferromagnet down to the bilayer with great potential for technological applications. Engineering the critical temperature to achieve room-temperature applications is one of the critical next steps on this path. Here, we report high-resolution capacitance dilatometry studies on Cr_{2}Ge_{2}Te_{6} single crystals which directly prove significant magnetoelastic coupling and provide quantitative values of the large uniaxial pressure effects on long-range magnetic order (∂T_{C}/∂p_{c}=24.7 K/GPa and ∂T_{C}/∂p_{ab}=−15.6 K/GPa) derived from thermodynamic relations. Moderate in-plane strain is thus sufficient to strongly enhance ferromagnetism in Cr_{2}Ge_{2}Te_{6} up to room temperature. Moreover, unambiguous signs of short-range magnetic order up to 200 K are found.http://doi.org/10.1103/PhysRevResearch.4.L022040 |
| spellingShingle | S. Spachmann A. Elghandour S. Selter B. Büchner S. Aswartham R. Klingeler Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6} Physical Review Research |
| title | Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6} |
| title_full | Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6} |
| title_fullStr | Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6} |
| title_full_unstemmed | Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6} |
| title_short | Strong effects of uniaxial pressure and short-range correlations in Cr_{2}Ge_{2}Te_{6} |
| title_sort | strong effects of uniaxial pressure and short range correlations in cr 2 ge 2 te 6 |
| url | http://doi.org/10.1103/PhysRevResearch.4.L022040 |
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