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Infrared transmission study of crystal-field excitations in La2-x-yNdxSryCuO4
Riou G.a, Jandl S.a, Poirier M.a, Nekvasil V., Marysko M., Fabry J., Jurek K., Divis M.c, Holsa J.d, Sutjahja I.M.g, Menovsky A.A., Barilo S.N., Shiryaev S.V., Kurnevich L.N.
a Ctr. Rech. Proprietes Electroniques, Département de Physique, Université de Sherbrooke, Canada
b Institute of Physics, Czech Academy of Sciences, Czech Republic
c Department of Electron Systems, Charles University, Czech Republic
d Department of Chemistry, University of Turku, Finland
e Van der Waals-Zeeman Instituut, Universiteit van Amsterdam, Netherlands
f Inst. Solid State/Semiconduct. Phys., National Academy of Science, Belarus
g Institut Teknologi Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]We report an infrared crystal field study of La2-x-yNdxSryCuO4 single crystals for (x=0.35, y=0), (x =0.34, y=0.14), and (x=0.42, y=0.19). Nd3+ crystal field excitations from the ground state multiplet 4I9/2 to the 4I11/2, 4I13/2, 4I15/2, and 4F3/2 excited multiplets are observed. A precise set of crystal field parameters, that reproduces the Nd3+ electronic levels in all the samples as well as the La1.65Nd0.35CuO4 susceptibility measurements as a function of temperature, is determined. A very strong Ising-like anisotropy of the low-temperature Nd3+ magnetic moment is related to a large value of the second rank crystal field parameter B20. In addition to the Nd3+ C4v symmetry regular site a second one, of lower symmetry, is detected and related to possible stripe formation.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]