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Maiko KofuDepartment of Physics, University of Virginia, Charlottesville, Virginia 22904, USAHiroaki UedaInstitute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, JapanHiroyuki NojiriInstitute for Materials Research, Tohoku University, Sendai, Miyagi 980-0821, JapanY. OshimaInstitute for Materials Research, Tohoku University, Sendai, Miyagi 980-0821, JapanT. ZenmotoInstitute for Materials Research, Tohoku University, Sendai, Miyagi 980-0821, JapanK. C. RuleHelmholtz-Zentrum Berlin, Berlin 14109, GermanyS. GerischerHelmholtz-Zentrum Berlin, Berlin 14109, GermanyB. LakeHelmholtz-Zentrum Berlin, Berlin 14109, GermanyCristian D. BatistaTheoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545 USAYutaka UedaInstitute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, JapanSeunghun LeeDepartment of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
2009lv
ABI
Аннотация
By using bulk magnetization, electron spin resonance (ESR), heat capacity, and neutron scattering techniques, we characterize the thermodynamic and quantum phase diagrams of Ba3Cr2O8. Our ESR measurements indicate that the low field paramagnetic ground state is a mixed state of the singlet and the Sz=0 triplet for H perpendicular c. This suggests the presence of an intradimer Dzyaloshinsky-Moriya (DM) interaction with a DM vector perpendicular to the c axis.
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