Several questions about maps and emc2

Alloy Theoretic Automated Toolkit (ATAT)
1

Dear Axel,
I would like to ask several questions about maps and emc2.

  1. Do the structures generated in maps are based on stability? Or random? What is the representation to numbers of structures?
  2. In maps, whether the ratio of two atoms in the site is set to constant value or an interval? Such as, 0 0 0 75%A, 25%B.
  3. I don’t understand the output files of emc2. Such as mc10.out, 300,350,400 is temperature, the surplus is? Could you give me more information?
    mc10.out:
    300.00000 -0.369854 -0.394778 -0.777778 -0.394778 -0.000000 0.000000 -0.394778 -0.777778 -0.394778 -0.394778 -0.777778 -0.394778 -0.376668 -0.998535 -0.376824 1.000000 1.000000 -0.777778 0.555556 0.555556 0.555556 0.666667 0.555556 0.555556 0.555556 0.666667 0.666667 0.555556 0.666667 0.555556 0.611111 0.555556 0.555556 0.555556 0.555556 0.666667 0.555556 0.666667 0.666667 0.555556 0.611111 0.611111 0.666667 0.555556 0.555556 0.666667 0.666667 0.777778 0.555556 0.555556 0.555556 0.555556 0.666667 0.555556 0.611111 0.555556 0.555556 0.555556 0.666667 0.555556 0.777778 0.555556 0.555556 0.555556 0.611111 0.666667 0.666667 0.666667 0.555556 0.666667 0.555556 0.611111 0.666667 -0.333333

Thank you!
Ivan

2

This is explained in https://arxiv.org/abs/cond-mat/0201511 section 3.2
The numbering just reflects in which order maps constructed the structures. Generally smaller number mean smaller (or equal) unit cell size. Other than that, there is no profound meaning to the structure numbers.

type

emc2 -h

At the end of the output, there is a table.