TY - JOUR
T1 - Deformed waveshape of quantum oscillation in magnetocaloric effect for layered organic superconductor
AU - Sugiura, Shiori
AU - Terashima, Taichi
AU - Uji, Shinya
AU - Schlueter, John A.
N1 - Funding Information:
Acknowledgments This work was supported by Grants-in-Aid for Scientific Research (No. 17H01144) and for Early-Career Scientists (No. 20K14400) from MEXT, Japan. Work at ANL was supported by U. Chicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. J.A.S. acknowledges support from the Independent Research=Development program while serving at the National Science Foundation.
Publisher Copyright:
© 2021 The Physical Society of Japan.
PY - 2021/7/1
Y1 - 2021/7/1
N2 - Magnetocaloric effect for a layered organic superconductor β''-(BEDT-TTF)2SF5CH2CF2SO3 has been investigated. At low magnetic fields, a sinusoidal quantum oscillation, arising from a closed Fermi surface, is observed. As the field increases, the waveshape of the oscillation is strongly deformed and then sharp peaks emerge. The total energy including the Landau quantized states and the elastic energy of the leads holding the sample is calculated as a function of field strength and angle, and the minimum total energy, which determines the sample angle, is obtained as a function of field. The calculated results clarify that the deformation of the quantum oscillation is ascribed to a tilting effect of the sample by the magnetic torque.
AB - Magnetocaloric effect for a layered organic superconductor β''-(BEDT-TTF)2SF5CH2CF2SO3 has been investigated. At low magnetic fields, a sinusoidal quantum oscillation, arising from a closed Fermi surface, is observed. As the field increases, the waveshape of the oscillation is strongly deformed and then sharp peaks emerge. The total energy including the Landau quantized states and the elastic energy of the leads holding the sample is calculated as a function of field strength and angle, and the minimum total energy, which determines the sample angle, is obtained as a function of field. The calculated results clarify that the deformation of the quantum oscillation is ascribed to a tilting effect of the sample by the magnetic torque.
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U2 - 10.7566/JPSJ.90.074601
DO - 10.7566/JPSJ.90.074601
M3 - Article
AN - SCOPUS:85107936768
SN - 0031-9015
VL - 90
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 7
M1 - 074601
ER -