TY  - JOUR
AU  - Kathryn, 
AU  - Qiu, Yiming
AU  - Copley, John
AU  - H., 
AU  - B., 
C2  - Physical Review Letters
DA  - 2014-02-04
LA  - en
M1  - 112
PB  - Physical Review Letters
PY  - 2014
TI  - Order by Disorder Spin Wave Gap in the XY Pyrochlore Magnet Er<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>
UR  - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914620
ER  -