Crystal symmetry and high-magnetic-field specific heat of SrCu{sub 2}(BO{sub 3}){sub 2}

Journal Article · Tue Mar 01 00:00:00 EST 2005 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.71.092403· OSTI ID:20666281

Jorge, G A; Jaime, M; Harrison, N ^[1]; Stern, R ^[2]; Bonca, J ^[3]; El Shawish, S ^[4]; Batista, C D ^[5]; Dabkowska, H A; Gaulin, B D ^[6]

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1. MST-NHMFL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. National Institute of Chemical Physics and Biophysics (NICPB), Tallinn (Estonia)
3. Department of Physics, FMF University of Ljubljana, 1000 Ljubljana (Slovenia)
4. J. Stefan Institute, 1000 Ljubljana (Slovenia)
5. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
6. Department of Physics and Astronomy, McMaster University, Hamilton, ON, Canada L8S 4C6 (Canada)

We report measurements of the specific heat of the quantum spin liquid system SrCu{sub 2}(BO{sub 3}){sub 2} in continuous magnetic fields H of up to 33 T. The specific heat data, when combined with a finite temperature Lanczos diagonalization of the Shastry-Sutherland Hamiltonian, indicate the presence of a nearest neighbor Dzyaloshinsky-Moriya (DM) interaction that violates the crystal symmetry. Moreover, the same DM interaction is required to explain the observed electron spin resonance lines for H parallel c.

• OSTI ID: 20666281
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 71, Issue 9; Other Information: DOI: 10.1103/PhysRevB.71.092403; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
BORATES
COPPER COMPOUNDS
CRYSTALS
ELECTRON CORRELATION
ELECTRON SPIN RESONANCE
HAMILTONIANS
INTERACTIONS
MAGNETIC FIELDS
SPECIFIC HEAT
SPIN
STRONTIUM COMPOUNDS
SYMMETRY