Editing Condensed matter physics (section)

===External magnetic fields===
In experimental condensed matter physics, external [[magnetic field]]s act as [[thermodynamic variable]]s that control the state, phase transitions and properties of material systems.<ref name=iupap-report>{{cite web |last=Committee on Facilities for Condensed Matter Physics|title=Report of the IUPAP working group on Facilities for Condensed Matter Physics : High Magnetic Fields |url=http://archive.iupap.org/wg/wg3/hmff/file_50963.pdf |publisher=International Union of Pure and Applied Physics|year=2004 |quote=The magnetic field is not simply a spectroscopic tool but a thermodynamic variable which, along with temperature and pressure, controls the state, the phase transitions and the properties of materials.|access-date=2016-02-07|archive-url=https://web.archive.org/web/20140222151520/http://www.iupap.org/wg/wg3/hmff/file_50963.pdf|archive-date=2014-02-22|url-status=dead }}</ref>  [[Nuclear magnetic resonance]] (NMR) is a method by which external [[magnetic fields]] are used to find resonance modes of individual nuclei, thus giving information about the atomic, molecular, and bond structure of their environment. NMR experiments can be made in magnetic fields with strengths up to 60 [[Tesla (unit)|tesla]].  Higher magnetic fields can improve the quality of NMR measurement data.<ref name="StatesAstronomy2013"/>{{rp|69}}<ref>{{cite book|title=High Magnetic Fields|chapter=Nuclear Magnetic Resonance in Solids at very high magnetic fields|author1=Moulton, W. G. |author2=Reyes, A. P. |editor=Herlach, Fritz |series=Science and Technology|publisher=World Scientific|year=2006|chapter-url=https://books.google.com/books?id=tN8CbCHzBmcC&pg=PA185|isbn=978-981-277-488-0}}</ref>{{rp|185}} [[Quantum oscillations]] is another experimental method where high magnetic fields are used to study material properties such as the geometry of the [[Fermi surface]].<ref name=doiron-leyraud2007>{{cite journal|last=Doiron-Leyraud|first=Nicolas|title=Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor|journal=Nature|year=2007|volume=447|pages=565–568|doi=10.1038/nature05872|arxiv= 0801.1281 |bibcode= 2007Natur.447..565D|issue=7144|pmid=17538614 |s2cid=4397560|display-authors=etal}}</ref>  High magnetic fields will be useful in experimental testing of the various theoretical predictions such as the quantized [[magnetoelectric effect]], image [[magnetic monopole]], and the half-integer [[quantum Hall effect]].<ref name="StatesAstronomy2013">{{cite book|author=Committee to Assess the Current Status and Future Direction of High Magnetic Field Science in the United States; Board on Physics and Astronomy; Division on Engineering and Physical Sciences; National Research Council|title=High Magnetic Field Science and Its Application in the United States: Current Status and Future Directions|url=http://www.nap.edu/catalog/18355/high-magnetic-field-science-and-its-application-in-the-united-states|date=25 November 2013|publisher=National Academies Press|isbn=978-0-309-28634-3|doi=10.17226/18355}}</ref>{{rp|57}}