title: Ferromagnetic Quantum Critical Point Avoided by the Appearance of Another Magnetic Phase in LaCrGe_{3} under Pressure.
abstract: The temperature-pressure phase diagram of the ferromagnet LaCrGe_{3} is determined for the first time from a combination of magnetization, muon-spin-rotation, and electrical resistivity measurements. The ferromagnetic phase is suppressed near 2.1 GPa, but quantum criticality is avoided by the appearance of a magnetic phase, likely modulated, AFM_{Q}. Our density functional theory total energy calculations suggest a near degeneracy of antiferromagnetic states with small magnetic wave vectors Q allowing for the potential of an ordering wave vector evolving from Q=0 to finite Q, as expected from the most recent theories on ferromagnetic quantum criticality. Our findings show that LaCrGe_{3} is a very simple example to study this scenario of avoided ferromagnetic quantum criticality and will inspire further study on this material and other itinerant ferromagnets.
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Valentin
authors.initials: V
authors.lastname: Taufour
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.|Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Udhara S
authors.initials: US
authors.lastname: Kaluarachchi
authors.affiliation: Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
authors.forename: Rustem
authors.initials: R
authors.lastname: Khasanov
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Manh Cuong
authors.initials: MC
authors.lastname: Nguyen
authors.affiliation: Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
authors.forename: Zurab
authors.initials: Z
authors.lastname: Guguchia
authors.affiliation: ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: Pabitra Kumar
authors.initials: PK
authors.lastname: Biswas
authors.affiliation: Dipartimento di Fisica e Scienze della Terra, Parco Area delle Scienze 7/A, I-43124 Parma, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Bonfà
authors.affiliation: Dipartimento di Fisica e Scienze della Terra, Parco Area delle Scienze 7/A, I-43124 Parma, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: De Renzi
authors.affiliation: Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Xiao
authors.initials: X
authors.lastname: Lin
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.|Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Stella K
authors.initials: SK
authors.lastname: Kim
authors.affiliation: Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Eun Deok
authors.initials: ED
authors.lastname: Mun
authors.affiliation: Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Hyunsoo
authors.initials: H
authors.lastname: Kim
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.|Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Furukawa
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Cai-Zhuang
authors.initials: CZ
authors.lastname: Wang
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.|Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Kai-Ming
authors.initials: KM
authors.lastname: Ho
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.|Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Sergey L
authors.initials: SL
authors.lastname: Bud'ko
authors.affiliation: The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA.|Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
authors.forename: Paul C
authors.initials: PC
authors.lastname: Canfield