In a magnetic system, frustration implies a situation in which all spin-spin interactions cannot be satisfied simultaneously. Geometric frustration arises from the underlying symmetry of the spin network, suppressing classical ground states and allowing exotic quantum states to emerge at low temperatures.
Core Focus:
- Kagome Lattice: Investigating triangle-based spin networks where bonds around each triangle cannot be simultaneously satisfied.
- Family of Compounds: Studying A2Cu3BF12 (A = Cs, Rb; B = Sn, Ce, Hf, Zr, Ti).
- Structural Phase Transitions: Analyzing how structural changes at low temperatures distort the kagome plane and influence magnetic behavior.
Figure: Distorted kagome planes resulting from phase transitions.
Reducing dimensionality—from 3D to 2D or 1D spin chains—further enhances quantum fluctuations. Our group explores these low-dimensional systems to discover new spin dynamics and quantum collective phenomena.
Selected Publications:
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"Magnetic structure of the distorted kagome lattice antiferromagnet Cs2Cu3SnF12"
K. Matan et al., PRB 99, 224404 (2019).
Link
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"Ghost modes and continuum scattering in the dimerized distorted kagome lattice antiferromagnet Rb2Cu3SnF12"
K. Matan et al., PRB 89, 024414 (2014).
Link
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"Pinwheel VBS state and triplet excitations in the two-dimensional deformed kagome lattice"
K. Matan et al., Nature Physics 6, 865 (2010).
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