KIT | KIT-Bibliothek | Impressum | Datenschutz

Hydrostatic and chemical pressure driven crossover from the commensurate to the incommensurate state of the Weyl semimetal Mn$_{3+x}$ Sn$_{1−x}$

Bhattacharya, K.; Bharatwaj, A. K.; Singh, C. 1; Gupta, R.; Khasanov, R.; Kanungo, S.; Nayak, A. K.; Majumder, M.
1 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)

Abstract:

The observation of large intrinsic anomalous Hall conductivity (AHC) in the non-collinear antiferromagnetic (AFM) phase of the Weyl semimetal Mn3Sn generates enormous interest in uncovering the entanglement between the real space magnetic ordering and the momentum space band structure. Previous studies show that changes in the magnetic structure induced by the application of hydrostatic and chemical pressure can significantly affect the AHC of Mn$_{3+x}$Sn$_{1−x}$ system. Here, we employ the muon spin relaxation/rotation ($_μ$+SR) technique to systematically investigate the evolution of different magnetic states in the Mn$_{3+x}$Sn$_{1−x}$ as a function of hydrostatic and chemical pressure. We find two muon sites experimentally, which is also supported by our \textit{ab initio} calculations. Our $_μ$+SR experiments affirm that the $x=0.05$ compound exhibits a commensurate magnetic state throughout the magnetically ordered phase below the Neel temperature $T_N≈420~K$ in ambient pressure. In contrast, we observe an incommensurate magnetic state below $T_{IC}∼175~K$ when a hydrostatic pressure of 1.5~GPa is applied. A similar transition from the commensurate to incommensurate state is also found with chemical pressure for $x=0.04$ and $x=0.03$, using $_μ$+SR and elastic neutron scattering experiments. ... mehr


Volltext §
DOI: 10.5445/IR/1000175094
Veröffentlicht am 11.10.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Forschungsbericht/Preprint
Publikationsjahr 2024
Sprache Englisch
Identifikator KITopen-ID: 1000175094
Umfang 13 S.
Vorab online veröffentlicht am 16.09.2024
Nachgewiesen in arXiv
Dimensions
Relationen in KITopen
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page