Jquery/Ajax/Json - Getting to Json

Question

I have an array and need to get to it with jquery/ajax, the problem is that I do not know how to get to it, it is being created by php $json = Array(); then make an array push like this:

array_push($json, array(
    'nome'=>'teste'
));

and then I put the arrays together like this:

$result = array (
    $json,
    $json2,
    $json3
);

giving a console log using ajax, it appears this way json in Chrome:

[Array[2]]
 0:Array[2]
  0:Object
   nome: "teste"

and in ajax Success is like this:

success: function (response) {
    console.log(response);
}

how do I get to the nome: "teste"? I tried that way but I couldn’t: console.log(response.nome);

EDIT: php printout:

[[{"nome":"teste"}]]