Neutron diffraction in a model itinerant metal near aquantum critical point
- Brookhaven National Laboratory (BNL)
- National Institute of Standards and Technology (NIST)
- ORNL
Neutron diffraction measurements on single crystals of Cr1−xVx (x=0, 0.02, 0.037) show that the ordering moment and the Neel temperature are continuously suppressed as x approaches 0.037, a proposed Quantum Critical Point (QCP). The wave vector Q of the spin density wave (SDW) becomes more incommensurate as x increases in accordance with the two band model. At xC=0.037 we have found temperature dependent, resolution limited elastic scattering at 4 incommensurate wave vectors Q=(1 1,2, 0, 0)*2/a, which correspond to 2 SDWs with Neel temperatures of 19 K and 300 K. Our neutron diffraction measurements indicate that the electronic structure of Cr is robust, and that tuning Cr to its QCP results not in the suppression of antiferromagnetism, but instead enables new spin ordering due to novel nesting of the Fermi surface of Cr.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 979154
- Journal Information:
- Journal of Physics Conference Series, Vol. 150, Issue 4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Spin and charge density waves in quasi-one-dimensional KMn6 Bi5
Onset of spin-density-wave antiferromagnetism in Cr/V multilayers