| Original language | English |
|---|---|
| Article number | 169705 |
| Pages (from-to) | 169705-1-169706-1 |
| Journal | Physical Review Letters |
| Volume | 93 |
| Issue number | 16 |
| DOIs |
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| State | Published - 15 Oct 2004 |
Bibliographical note
Funding Information:Partial support by the National Science Foundation under Grants DMR-0240458 and PHY-0140192 is gratefully acknowledged.