Giant magnetoelastic spin-flop with magnetocrystalline instability in La1.4 Sr1.6 Mn2 O7

K. T. Ko; H. Jang; D. H. Kim; B. G. Park; J. Y. Kim; S. B. Kim; Y. S. Oh; S. W. Cheong; J. H. Park

doi:10.1103/PhysRevMaterials.2.014408

Giant magnetoelastic spin-flop with magnetocrystalline instability in La1.4 Sr1.6 Mn2 O7

K. T. Ko, H. Jang, D. H. Kim, B. G. Park, J. Y. Kim, S. B. Kim, Y. S. Oh, S. W. Cheong, J. H. Park

School of Arts and Sciences, Physics & Astronomy

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Abstract

We studied a low-field giant magnetostrictive spin-flop transition in a colossal magnetoresistance manganite La1.4Sr1.6Mn2O7 using resonant soft x-ray diffraction and soft x-ray absorption spectroscopy at the Mn L2,3 edge. The spin-flop transition is induced by an instability of magnetocrystalline anisotropy near a critical eg orbital configuration with a balanced occupation in dx2-y2 and d3z2-r2 states, which contribute in-plane and out-of-plane orbital angular momenta, respectively. The magnetic field drives a certain change in the orbital occupation with lattice distortion to switch the magnetic anisotropy, resulting in the spin-flop transition. These results provide a comprehensive mechanism of interplay between spin, orbital, and lattice degrees of freedom to realize a low-field giant magnetoelasticity.

Original language	English (US)
Article number	014408
Journal	Physical Review Materials
Volume	2
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevMaterials.2.014408
State	Published - Jan 16 2018

All Science Journal Classification (ASJC) codes

Materials Science(all)
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevMaterials.2.014408

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title = "Giant magnetoelastic spin-flop with magnetocrystalline instability in La1.4 Sr1.6 Mn2 O7",

abstract = "We studied a low-field giant magnetostrictive spin-flop transition in a colossal magnetoresistance manganite La1.4Sr1.6Mn2O7 using resonant soft x-ray diffraction and soft x-ray absorption spectroscopy at the Mn L2,3 edge. The spin-flop transition is induced by an instability of magnetocrystalline anisotropy near a critical eg orbital configuration with a balanced occupation in dx2-y2 and d3z2-r2 states, which contribute in-plane and out-of-plane orbital angular momenta, respectively. The magnetic field drives a certain change in the orbital occupation with lattice distortion to switch the magnetic anisotropy, resulting in the spin-flop transition. These results provide a comprehensive mechanism of interplay between spin, orbital, and lattice degrees of freedom to realize a low-field giant magnetoelasticity.",

author = "Ko, {K. T.} and H. Jang and Kim, {D. H.} and Park, {B. G.} and Kim, {J. Y.} and Kim, {S. B.} and Oh, {Y. S.} and Cheong, {S. W.} and Park, {J. H.}",

note = "Funding Information: This work is supported by Study for Nano Scale Optomaterials and Complex Phase Materials (Grant No. 2016K1A4A4A01922028) through NRF funded by MSIP of Korea. The work at Rutgers University was supported by the DOE under Grant No. DOE: DE-FG02-07ER46382. J.-Y. Kim was supported by the Institute for Basic Science (IBS) (Grant No. IBS-R014-A2) in Korea. PAL is supported by MSIP of Korea. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

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day = "16",

doi = "10.1103/PhysRevMaterials.2.014408",

language = "English (US)",

volume = "2",

journal = "Physical Review Materials",

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TY - JOUR

T1 - Giant magnetoelastic spin-flop with magnetocrystalline instability in La1.4 Sr1.6 Mn2 O7

AU - Ko, K. T.

AU - Jang, H.

AU - Kim, D. H.

AU - Park, B. G.

AU - Kim, J. Y.

AU - Kim, S. B.

AU - Oh, Y. S.

AU - Cheong, S. W.

AU - Park, J. H.

N1 - Funding Information: This work is supported by Study for Nano Scale Optomaterials and Complex Phase Materials (Grant No. 2016K1A4A4A01922028) through NRF funded by MSIP of Korea. The work at Rutgers University was supported by the DOE under Grant No. DOE: DE-FG02-07ER46382. J.-Y. Kim was supported by the Institute for Basic Science (IBS) (Grant No. IBS-R014-A2) in Korea. PAL is supported by MSIP of Korea. Publisher Copyright: © 2018 American Physical Society.

PY - 2018/1/16

Y1 - 2018/1/16

N2 - We studied a low-field giant magnetostrictive spin-flop transition in a colossal magnetoresistance manganite La1.4Sr1.6Mn2O7 using resonant soft x-ray diffraction and soft x-ray absorption spectroscopy at the Mn L2,3 edge. The spin-flop transition is induced by an instability of magnetocrystalline anisotropy near a critical eg orbital configuration with a balanced occupation in dx2-y2 and d3z2-r2 states, which contribute in-plane and out-of-plane orbital angular momenta, respectively. The magnetic field drives a certain change in the orbital occupation with lattice distortion to switch the magnetic anisotropy, resulting in the spin-flop transition. These results provide a comprehensive mechanism of interplay between spin, orbital, and lattice degrees of freedom to realize a low-field giant magnetoelasticity.

AB - We studied a low-field giant magnetostrictive spin-flop transition in a colossal magnetoresistance manganite La1.4Sr1.6Mn2O7 using resonant soft x-ray diffraction and soft x-ray absorption spectroscopy at the Mn L2,3 edge. The spin-flop transition is induced by an instability of magnetocrystalline anisotropy near a critical eg orbital configuration with a balanced occupation in dx2-y2 and d3z2-r2 states, which contribute in-plane and out-of-plane orbital angular momenta, respectively. The magnetic field drives a certain change in the orbital occupation with lattice distortion to switch the magnetic anisotropy, resulting in the spin-flop transition. These results provide a comprehensive mechanism of interplay between spin, orbital, and lattice degrees of freedom to realize a low-field giant magnetoelasticity.

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Giant magnetoelastic spin-flop with magnetocrystalline instability in La1.4 Sr1.6 Mn2 O7

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