Journal
PHYSICAL REVIEW B
Volume 100, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.100.174412
Keywords
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Funding
- Basic Research Program of National Research University Higher School of Economics
- Program of the Presidium of RAS
- Russian Foundation for Basic Research [19-02-00194]
- Austrian Science Funds [I 2816-N27]
- Russian Science Foundation [17-02-01505]
- project Matadire [ANR-2018-CE05-0023]
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We present a combined experimental and theoretical investigation of the low-frequency ESR dynamics in the ordered phases of magnetic mineral linarite. This material consists of weakly coupled spin-1/2 chains of copper ions with frustrated ferro- and antiferromagnetic interactions. In zero magnetic field, linarite orders into a spiral structure and exhibits a peculiar magnetic phase diagram sensitive to the field orientation. The resonance frequencies and their field dependence are analyzed combining microscopic and macroscopic theoretical approaches and precise values of magnetic anisotropy constants are obtained. We conclude that possible realization of exotic multipolar quantum states in this material is greatly influenced by the biaxial anisotropy.
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