Glass transition in the polaron dynamics of colossal magnetoresistive manganites

被引：81

作者：

Argyriou, DN

Lynn, JW

Osborn, R

Campbell, B

Mitchell, JF

Ruett, U

Bordallo, HN

Wildes, A

Ling, CD

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 09, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.89.036401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Neutron scattering measurements on a bilayer manganite near optimal doping show that the short-range polaron correlations are completely dynamic at high T , but then freeze upon cooling to a temperature T*approximate to310 K . This glass transition suggests that the paramagnetic/insulating state arises from an inherent orbital frustration that inhibits the formation of a long-range orbital- and charge-ordered state. Upon further cooling into the ferromagnetic-metallic state (T-C=114 K) , where the polarons melt, the diffuse scattering quickly develops into a propagating, transverse optic phonon.

引用

收藏

页码：364011 / 364014

页数：4

相关论文

共 22 条

[1] Charge ordering and polaron formation in the magnetoresistive oxide La0.7Ca0.3MnO3 [J].

Adams, CP ;

Lynn, JW ;

Mukovskii, YM ;

Arsenov, AA ;

Shulyatev, DA .

PHYSICAL REVIEW LETTERS, 2000, 85 (18) :3954-3957

[2] Lattice displacements above TC in the layered manganite La1.2Sr1.8Mn2O7 [J].

Argyriou, DN ;

Bordallo, HN ;

Mitchell, JF ;

Jorgensen, JD ;

Strouse, GF .

PHYSICAL REVIEW B, 1999, 60 (09) :6200-6203

[3] Charge ordering and phase competition in the layered perovskite LaSr2Mn2O7 [J].

Argyriou, DN ;

Bordallo, HN ;

Campbell, BJ ;

Cheetham, AK ;

Cox, DE ;

Gardner, JS ;

Hanif, K ;

dos Santos, A ;

Strouse, GF .

PHYSICAL REVIEW B, 2000, 61 (22) :15269-15276

[4] Colossal effects in transition metal oxides caused by intrinsic inhomogeneities [J].

Burgy, J ;

Mayr, M ;

Martin-Mayor, V ;

Moreo, A ;

Dagotto, E .

PHYSICAL REVIEW LETTERS, 2001, 87 (27) :277202-277202

[5] Structure of nanoscale polaron correlations in La1.2Sr1.8Mn2O7 -: art. no. 014427 [J].

Campbell, BJ ;

Osborn, R ;

Argyriou, DN ;

Vasiliu-Doloc, L ;

Mitchell, JF ;

Sinha, SK ;

Ruett, U ;

Ling, CD ;

Islam, Z ;

Lynn, JW .

PHYSICAL REVIEW B, 2002, 65 (01) :1-5

[6] Short-range polaron correlations in the ferromagnetic La1-xCaxMnO3 [J].

Dai, PC ;

Fernandez-Baca, JA ;

Wakabayashi, N ;

Plummer, EW ;

Tomioka, Y ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2553-2556

[7] Glassy statics and dynamics in the chemically ordered pyrochlore anti-ferromagnet Y2Mo2O7 [J].

Gardner, JS ;

Gaulin, BD ;

Lee, SH ;

Broholm, C ;

Raju, NP ;

Greedan, JE .

PHYSICAL REVIEW LETTERS, 1999, 83 (01) :211-214

[8] THEORY OF THE ROLE OF COVALENCE IN THE PEROVSKITE-TYPE MANGANITES [LA,M(II)]MNO3 [J].

GOODENOUGH, JB .

PHYSICAL REVIEW, 1955, 100 (02) :564-573

[9] Specific heat of La1.2Sr1.8Mn2O7 [J].

Gordon, JE ;

Bader, SD ;

Mitchell, JF ;

Osborn, R ;

Rosenkranz, S .

PHYSICAL REVIEW B, 1999, 60 (09) :6258-6261

[10] Temperature and field dependence of the phase separation, structure, and magnetic ordering in La1-xCaxMnO3 (x=0.47, 0.50, and 0.53) [J].

Huang, Q ;

Lynn, JW ;

Erwin, RW ;

Santoro, A ;

Dender, DC ;

Smolyaninova, VN ;

Ghosh, K ;

Greene, RL .

PHYSICAL REVIEW B, 2000, 61 (13) :8895-8905