@classmethod
def cubic(cls, a):
    """
        Initializes a Box in standard cubic setting using only cubic lattice
        parameters.  

        a = b = c, alpha = beta = gamma = 90

        Parameters
        ----------
        - a : float
            The a lattice constant

        Returns
        -------
        atomman.Box
        """
    return cls(a=a, b=a, c=a, alpha=90, beta=90, gamma=90)
