Anomalous low-temperature and high-field magnetoresistance in the organic superconductor [beta][sup [double prime]]-(BEDT-TTF)[sub 2]SF[sub 5]CH[sub 2]CF[sub 2]SO[sub 3]

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.6296· OSTI ID:6334291

Zuo, F; Su, X; Zhang, P ^[1]; Brooks, J S ^[2]; Wosnitza, J ^[3]; Schlueter, J A; Williams, J M ^[4]; Nixon, P G; Winter, R W; Gard, G L ^[5]

---

1. Department of Physics, University of Miami, Coral Gables, Florida 33124 (United States)
2. National High Magnetic Field Laboratory, Tallahassee, Florida 32306 (United States)
3. Physikalisches Institut, Universitaet Karlsruhe, D-76128 Karlsruhe (Germany)
4. Chemistry and Materials Science Divisions, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
5. Department of Chemistry, Portland State University, Portland, Oregon 97207 (United States)

We report direct observations of anomalous magnetic-field and temperature dependences of the Shubnikov[endash]de Haas oscillations in the organic superconductor [beta][sup [double prime]]-(BEDT-TTF)[sub 2]SF[sub 5]CH[sub 2]CF[sub 2]SO[sub 3]. Unlike other BEDT-TTF based organic superconductors, a nonmetallic temperature dependence of the background magnetoresistance is clearly observed. It is speculated that the nonmetallic behavior may arise from a partial nesting of the open orbits, similar to the field-induced density wave in the quasi-one-dimensional systems or a charge localization. The analysis of the magnetoresistance oscillations are found to deviate from the conventional Lifshitz-Kosevich description at high field and low temperatures. [copyright] [ital 1999] [ital The American Physical Society]

• OSTI ID: 6334291
• Journal Information: Physical Review, B: Condensed Matter, Vol. 60:9; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON COMPOUNDS
FERMI LEVEL
FLUORINE COMPOUNDS
HYDROGEN COMPOUNDS
MAGNETIC FIELDS
MAGNETORESISTANCE
ORGANIC SUPERCONDUCTORS
OXYGEN COMPOUNDS
SHUBNIKOV-DE HAAS EFFECT
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TEMPERATURE RANGE
360204* - Ceramics
Cermets
& Refractories- Physical Properties