Probing of magnetic dimensional crossover in CrSiTe$_{3}$ through picosecond strain pulses
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913019684978688 |
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| author | M, Anjan Kumar N Mukherjee, Soumya Mukherjee, Abhirup Punjal, Ajinkya Purwar, Shubham Setti, Thirupathaiah S, Shriganesh Prabhu Lal, Siddhartha Kamaraju, N. |
| author_facet | M, Anjan Kumar N Mukherjee, Soumya Mukherjee, Abhirup Punjal, Ajinkya Purwar, Shubham Setti, Thirupathaiah S, Shriganesh Prabhu Lal, Siddhartha Kamaraju, N. |
| contents | Elucidating the emergence of long-range magnetic ordering from its precursor short-range magnetic ordering (SRMO) in two-dimensional van der Waals materials holds profound implications for fundamental research and technological advancements. However, directly observing the intricate stages of this magnetic dimensional crossover (MDC) remains a significant experimental challenge. While magneto-elastic coupling offers a promising avenue, detecting the minute lattice response to SRMO proves challenging. Recent investigations utilizing second harmonic generation have unveiled a two-step MDC in a van der Waals ferromagnetic insulator. However, an unambiguous detection of MDC through the time-resolved techniques remains elusive. To meet this goal, we have executed an alternative approach by employing picosecond acoustic strain pulses generated by femtosecond lasers to probe the various stages of MDC through the magneto-elastic coupling for the first time. By analyzing the shape of the strain pulse in both the time and frequency domains as a function of temperature, we clearly demonstrate the detection of the subtle influence of spin fluctuations on the lattice. Additionally, the ultrafast carrier dynamics also show signatures of MDC. Our measurements pave the way towards characterizing magnetic materials in time-resolved experiments that are crucial in designing a new generation of spin-based optoelectronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_01256 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing of magnetic dimensional crossover in CrSiTe$_{3}$ through picosecond strain pulses M, Anjan Kumar N Mukherjee, Soumya Mukherjee, Abhirup Punjal, Ajinkya Purwar, Shubham Setti, Thirupathaiah S, Shriganesh Prabhu Lal, Siddhartha Kamaraju, N. Materials Science Elucidating the emergence of long-range magnetic ordering from its precursor short-range magnetic ordering (SRMO) in two-dimensional van der Waals materials holds profound implications for fundamental research and technological advancements. However, directly observing the intricate stages of this magnetic dimensional crossover (MDC) remains a significant experimental challenge. While magneto-elastic coupling offers a promising avenue, detecting the minute lattice response to SRMO proves challenging. Recent investigations utilizing second harmonic generation have unveiled a two-step MDC in a van der Waals ferromagnetic insulator. However, an unambiguous detection of MDC through the time-resolved techniques remains elusive. To meet this goal, we have executed an alternative approach by employing picosecond acoustic strain pulses generated by femtosecond lasers to probe the various stages of MDC through the magneto-elastic coupling for the first time. By analyzing the shape of the strain pulse in both the time and frequency domains as a function of temperature, we clearly demonstrate the detection of the subtle influence of spin fluctuations on the lattice. Additionally, the ultrafast carrier dynamics also show signatures of MDC. Our measurements pave the way towards characterizing magnetic materials in time-resolved experiments that are crucial in designing a new generation of spin-based optoelectronic devices. |
| title | Probing of magnetic dimensional crossover in CrSiTe$_{3}$ through picosecond strain pulses |
| topic | Materials Science |
| url | https://arxiv.org/abs/2402.01256 |