JQuery / Ajax / JSon - Get to the JSon

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

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

and then join the arrays like this:

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

giving a console log using ajax, it looks like json in chrome:

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

and in ajax, success looks like this:

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

How do I get to nome: "teste" ? I tried this but did not: console.log(response.nome);

EDIT: php printing:

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