Feng, Y;
Jaramillo, R;
Srajer, G;
Lang, JC;
Islam, Z;
Somayazulu, MS;
Shpyrko, OG;
... Rosenbaum, TF; + view all
(2007)
Pressure-tuned spin and charge ordering in an itinerant antiferromagnet.
PHYS REV LETT
, 99
(13)
, Article 137201. 10.1103/PhysRevLett.99.137201.
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Abstract
Elemental chromium orders antiferromagnetically near room temperature, but the ordering temperature can be driven to zero by applying large pressures. We combine diamond anvil cell and synchrotron x-ray diffraction techniques to measure directly the spin and charge order in the pure metal at the approach to its quantum critical point. Both spin and charge order are suppressed exponentially with pressure, well beyond the region where disorder cuts off such a simple evolution, and they maintain a harmonic scaling relationship over decades in scattering intensity. By comparing the development of the order parameter with that of the magnetic wave vector, it is possible to ascribe the destruction of antiferromagnetism to the growth in electron kinetic energy relative to the underlying magnetic exchange interaction.
| Type: | Article |
|---|---|
| Title: | Pressure-tuned spin and charge ordering in an itinerant antiferromagnet |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.137201 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.137201 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | QUANTUM CRITICAL-POINT, MAGNETIC EXCITATIONS, NEEL TRANSITION, DENSITY WAVES, CHROMIUM, ALLOYS, SCATTERING, HEAVY, TEMPERATURE, DEPENDENCE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/129324 |
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