Abstract
A scaling theory is introduced for bicritical points, such as antiferromagnetic spinflop points (with analogies to the upper point in ), where two distinct critical lines meet. Experimentally testable predictions follow from renormalization-group calculations which indicate that the bicritical exponents should be Heisenberg like for systems with components; the crossover exponent is directly observable. For an intermediate ("supersolid") low-temperature phase may appear, the bicritical point then becoming tetracritical.
- Received 15 April 1974
DOI:https://doi.org/10.1103/PhysRevLett.32.1350
©1974 American Physical Society