2008/11/30 by Shinji Watanabe, Masatoshi Imada
Physics and Astronomy · #Atomic and Subatomic Physics Research #Condensed matter physics #Doping #Graphite #Lattice (music) #Materials science #Mean field theory #Monte Carlo method #Path integral Monte Carlo #Path integral formulation #Physics #Physics of Superconductivity and Magnetism #Position and momentum space #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1143/jpsj.78.033603
published as J. Phys. Soc. Jpn. 78 (2009) 033603 · 5 pages, 5 figures, selected as editor's choice in Journal of the Physical Society of Japan
arxiv created 2009/02/25 · openalex publication_date 2009/02/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We theoretically study the stability of the solidified second-layer 3He at 4/7 of the first-layer density adsorbed on graphite, which exhibits quantum spin liquid. We construct a lattice model for the second-layer 3He by taking account of density fluctuations on the third layer together by employing the refined configuration recently found by path integral Monte Carlo simulations. When holes are doped into the 4/7 solid, within the mean-field approximation, the density-ordered fluid emerges. The evolution of hole pockets offers a unified explanation for the measured doping and temperature dependences of specific-heat anomalies. We argue that differentiation in momentum space is a key to understanding the physics and accounts for multiscale thermodynamic anomalies in the mono- and double-layered 3He systems beyond the mean-field level.