High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2

We measured the magnetization versus field of SrCu2(BO 3)2 using a 45T, 400ms pulsed magnet. By achieving good thermal coupling of the sample to the 3He and 4He baths, we obtained a realistic temperature-dependence for the 1/8, 1/4 and 1/3 magnetization plateaux. In addition, we measured the low tem...

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Detalles Bibliográficos
Publicado: 2004
Materias:
Magnetization
Specific heat
Spin-dimer system
SrCu2(BO3) 2
Dimers
Ground state
Low temperature effects
Magnetic fields
Single crystals
Spin-dimer systems
SrCu2(BO3)2
Strontium compounds
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v369_n1-2_p90_Jorge
http://hdl.handle.net/20.500.12110/paper_09258388_v369_n1-2_p90_Jorge
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09258388_v369_n1-2_p90_Jorge
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spelling paper:paper_09258388_v369_n1-2_p90_Jorge2023-06-08T15:51:27Z High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2 Magnetization Specific heat Spin-dimer system SrCu2(BO3) 2 Dimers Ground state Low temperature effects Magnetic fields Magnetization Single crystals Specific heat Spin-dimer systems SrCu2(BO3)2 Strontium compounds We measured the magnetization versus field of SrCu2(BO 3)2 using a 45T, 400ms pulsed magnet. By achieving good thermal coupling of the sample to the 3He and 4He baths, we obtained a realistic temperature-dependence for the 1/8, 1/4 and 1/3 magnetization plateaux. In addition, we measured the low temperature specific heat in continuous magnetic fields up to 18T. We found that a contribution attributed to singlet spin-dimer excitations is suppressed with increasing magnetic fields. At fields H=12T a second anomaly is evident that shifts to lower temperatures as the field increases. The second anomaly is attributed to triplet spin excitations that come closer to the ground state in presence of an external field. A linear extrapolation of this anomaly plotted versus field indicate that the gap associated to these excitations could be suppressed at H≈25T, just before the 1/8 magnetization plateau. © 2003 Elsevier B.V. All rights reserved. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v369_n1-2_p90_Jorge http://hdl.handle.net/20.500.12110/paper_09258388_v369_n1-2_p90_Jorge
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Magnetization
Specific heat
Spin-dimer system
SrCu2(BO3) 2
Dimers
Ground state
Low temperature effects
Magnetic fields
Magnetization
Single crystals
Specific heat
Spin-dimer systems
SrCu2(BO3)2
Strontium compounds
spellingShingle Magnetization
Specific heat
Spin-dimer system
SrCu2(BO3) 2
Dimers
Ground state
Low temperature effects
Magnetic fields
Magnetization
Single crystals
Specific heat
Spin-dimer systems
SrCu2(BO3)2
Strontium compounds
High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2
topic_facet Magnetization
Specific heat
Spin-dimer system
SrCu2(BO3) 2
Dimers
Ground state
Low temperature effects
Magnetic fields
Magnetization
Single crystals
Specific heat
Spin-dimer systems
SrCu2(BO3)2
Strontium compounds
description We measured the magnetization versus field of SrCu2(BO 3)2 using a 45T, 400ms pulsed magnet. By achieving good thermal coupling of the sample to the 3He and 4He baths, we obtained a realistic temperature-dependence for the 1/8, 1/4 and 1/3 magnetization plateaux. In addition, we measured the low temperature specific heat in continuous magnetic fields up to 18T. We found that a contribution attributed to singlet spin-dimer excitations is suppressed with increasing magnetic fields. At fields H=12T a second anomaly is evident that shifts to lower temperatures as the field increases. The second anomaly is attributed to triplet spin excitations that come closer to the ground state in presence of an external field. A linear extrapolation of this anomaly plotted versus field indicate that the gap associated to these excitations could be suppressed at H≈25T, just before the 1/8 magnetization plateau. © 2003 Elsevier B.V. All rights reserved.
title High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2
title_short High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2
title_full High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2
title_fullStr High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2
title_full_unstemmed High magnetic field magnetization and specific heat of the 2D spin-dimer system SrCu2(BO3)2
title_sort high magnetic field magnetization and specific heat of the 2d spin-dimer system srcu2(bo3)2
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v369_n1-2_p90_Jorge
http://hdl.handle.net/20.500.12110/paper_09258388_v369_n1-2_p90_Jorge
_version_ 1768546729124167680

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