Spin Fluctuation Dominated Magneto-transport in Skyrmionic Co8Zn8Mn4

POSTER

Abstract

The β-Mn type Co-Zn-Mn alloys have attracted significant attention due to their ability to host skyrmions at room temperature. Here we discuss the synthesis and magneto-transport properties of high-quality single crystals of Co8Zn8Mn4 with a Curie temperature of 275 K. A linear magnetoresistance (MR) is observed at low temperatures (Tc), the MR curve shows a nonlinear nature which corroborate to the dominance of spin fluctuations over magnons. Scaling of anomalous Hall resistivity with longitudinal resistivity reveals the dominance of skew scattering mechanism. The correlation between the skew scattering contribution and magnetoresistance reveals that the skew scattering contribution stems from the spin fluctuations. Our work provides new insight on the dominance of varied scattering mechanisms in chiral magnets with low conductivity.

* P. Saha and P. Das acknowledge UGC-NET JRF for providing financial support. M. Singh acknowledges CSIR for providing JRF. S. Patnaik thanks DST-NANOMISSION-CONCEPT for consumables and equipment grants. We are thankful to FIST program of Department of Science and Technology, Government of India for low temperature high magnetic field measurement set-up at JNU. We are grateful to Advanced Instrumentation Research Facility (AIRF), JNU for PPMS measurement facility.

Publication: P. Saha et al arXiv, 2310.00739.

Presenters

  • Pallavi Saha

    Jawaharlal Nehru University, Jawaharlal Nehru University, New Delhi, School of Physical Sciences, Jawaharlal Nehru University

Authors

  • Pallavi Saha

    Jawaharlal Nehru University, Jawaharlal Nehru University, New Delhi, School of Physical Sciences, Jawaharlal Nehru University

  • Priya Das

    Jawaharlal Nehru University, Jawaharlal Nehru University, New Delhi, School of Physical Sciences, Jawaharlal Nehru University

  • Mainpal Singh

    Jawaharlal Nehru University, Jawaharlal Nehru University, New Delhi, School of Physical Sciences, Jawaharlal Nehru University

  • Rashmi Rai

    Jawaharlal Nehru University

  • Satyabrata Patnaik

    Jawaharlal Nehru University, Jawaharlal Nehru University, New Delhi, School of Physical Sciences, Jawaharlal Nehru University