Quantum-Based Model System Identified For Understanding New Materials

  • Scientists have identified a model system of quantum critical points for a better understanding of new materials. 
  • This model system can help understand unusual behaviors in materials near a quantum critical point and may be used in understanding entanglement and quantum computing. 
  • New materials like transition metal oxides, manganites, ruthenate, and iridates are difficult to understand using existing frameworks. 
  • The study, led by Prof. N. S. Vidhyadhiraja from Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), focuses on “local quantum criticality” in certain materials. 
  • The study was supported by the Science and Engineering Research Board (SERB), an attached institution of the Department of Science and Technology (DST). 
  • The study focuses on quantum critical metal-insulator transitions that occur at zero kelvin. 
  • The theoretical model that studies this critical behavior is the “modified periodic Anderson model (MPAM).” 
  • The researchers discovered a distinct energy distribution pattern called a “soft-gap spectrum” in the MPAM, which is a three-orbital lattice model.
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