DTIC ADA427515: Geometrically Frustrated Magnets as Model Systems

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by  Defense Technical Information Center

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| __ The speci aim of Ni restarch propre isto acest the cooperative migrate popes of
| gecmemcaly Rusueted mogneis Which afe ede tems for he Rene phenomena rsaton. Inthe past
i Sem have cartinnd aio of he dram popetien cf anew type af rusted magnetic sya, hepa
¥ ee" compan Dy 720;, The gpm ce mamas oe avis of frosed magnets in hie formate
I saenetinn wan be Coste. The aeomesy uf the Ketan the nate ofthe Lol spre here ates
tenucin low temerttzetersedynamicr which aco emrtablyanlogoos a rezen wate, Ons fadingr
leona te Spin ie ayers represen ane Tanai of spn foezng tv a assy sysiem. We hue found
vay of navel behave in thse ents in pila croweover Fram tonal ta quar xi elagaion
‘hin is evesdas spin-spin eoreutons develop, und ureenatbehevoe of he Spa fering wih alien
ofthe saga suplatoce, We ave alo itis] adic of eee Eusaied avagaetic mate we 38
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TEE RE] SURCNOIN [TERETE GLASSPENTENW SETTTY COARSE Pf o |
(1 Pratlem Sadied and Important Resuls

Goneasciesay funted susie neem hac thetapolngy’ of hs ain tae esto Fe
lf he spin opm terion, have recor ne depronaratcd %0 Compl HoH cla oF snags in hich
emer of Fie eooperkere sain sale bare beer obsered, these asrtomn avs of particular ipoviance
tecasse Laey aller « usioue venus though whic one ech eXansine the ewteeyuences af rusuton fn the
jn g clean syste: Ga, whe diner mu demmart!. Undeeantng tuch frstte
cation lor ayer ae verte ne entl eres an Tops jaxton wy,
Sltsnugt asometr cel magners tosiackon hss ‘cen ast ealenttely sth in anaes wil
an feronagiss ners neigh: ie econ Ihe Cuts use esteem have wo been Zune inthe =
called span sc3" mates in which ferronaghesi 26 wel us SIRO Interaction 2am bo Wasted. these
compaus (rac a6 DY.TUOs, HozToQ., end Hamel, the tare cauh spine ith a sharp ingheion
snisoasse ltalized ona ehcea-baved petuchlaeltve are wavered by she name lai mechanics
‘he hydingen asing ie weer ioe. 1a tho prond slave of oniraly Yexaynval isc UD), meyyen iors aide ate
vie of sarahoka 1h to ets fcr art Tlgin one pois sited ele lo et te eNOTE
0, Dv spin ice caters Ue meget ue for fe uae we Sebo corey-shering tevahedra ans
{eit spine ro consrunod oy etystl elt “erations ingests bel san dic vey Tots
Wer of he Reskocia. Dipite sud Emumagestic exchenge ineretins hoe the ep ree

oss ietbeSion, Fe spins GeiM HAN cl Lo Pea,
System lie anh Cageneraes fee Mie

lune beaver sass with his trusiaion
"Te spin io sete has been cemotstcd expet-nems'y rove neulron scattring studi and alsa
trou mouranemints she Mugiete apes Heer iE™ yew memanend eroont eae ATE wh HRC
resent wth the eral prsrion forthe" ule’ (US! cee by Baling? al eapesimedtal sus
fovaee, ale ae spin enzuny umly sees out bee = 3 Bem Loe, seen
gles anne unonp'y Peatonsy Apoadent enapieaea ype ese ng ALT ~ 18 Ke
{yin alice fv winch utr heals tran of awl spespanimeratiea), the specreczing tanson
‘has show io be shored sth sory auzrow tangs of resiton umes, peeeinably altburabe wih he one
‘love oerhke coroations aman he spite. Rinhean athe sar enc he spi feeing sem agin
{Basar apglieion af a magnetic eld ise 9 eee ine spak ee oecang The dyoarve spine rein
in DystOe i thetare 2 Taber soustal exsmple of glassness unc mexnece sestem. We have ste spin
retexalon ie vis sem esa aneling of reper nel tasgreis Feud We Find an anesnal eros fet
thermal co qearmom ene receaian ith Hearing emgeratre. Tha estates, howe, veered 3 AON
api: ie errors level a te west lepers Corny he reeemg inl the spice srvund stale Ws
Ihave studied ihe spun reer sshich dete a loca amperacures (eK) ay a rome ne recente
show iL be quite difinenc from fe een fccring sn ordi apy erases in hat hore again very rane
range ait wlacaror cima, We alka Zave sutic” tes syste a6 a Thaction of agin wth pm magic
ins. ta fal wre Uekior <0 ha Uist Hrs decreases wl then iocresses the pi cela Utne
revuling ithe supressian and sasequent erhanrene afte spn fcszing with eileen someting Mh

uiquo in glisey angaete yer,

to the suryy of the syatom, 43 fee provides an excecre wens in whish to std a simple
scimples thorn iaaaines of ace ae sell a the core get eemseueaces of Fntcuoor i the
nit of low dine Buclonre, liane the Ewisa30n te sscekaed wah uniaial epine ther an
Hehorteay pier, thane sytem are cron adogons fo se mien evisalee opin systems ‘nai Se ATE
cucredy suyng rer onetier zor ies witiauy sunles unde is pea,

‘Winle mas. of the zeewrch under sis grunt het esa a* the spin ice systom, the Foaes have alsa
suppomed the ination of ths ctdles gf anita! Fu: systeae eteatel Unvagh fgeaphyt ot elles
‘they of aler Frurceed mugeric sacral shh are any bog eosin th NSE spe

‘ssc! uruloey othe protons nice. Jn both
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(2) Publications callare in peer-reviewed journals)

‘Re-ensum Bohuv:or ot a 3D Spin Liquid Phace and Analog t tho He Miking Carve in a Gsometiealy
Listed Magae” YK. Tah. Snyder ane P. Scher Canadisr Journal of Physic 79,1439. 1436 12001,

“Thomodnamic Say of Rxciaticns in a 3D Spin Liquid" VC, Tawi, 7. Segsh, aml 2 Sohifir, Pasica
Review na, 012512 1 M2124 2001,

ys ain a Fence". Seyen 1.8, Saks BD. Cave, el & Schifer, Nur 413, 48-38 OUI),

‘Doty Soir ee: the Luge. o Lilien on Spin Hering in DysTsOr"f Smee 2.5,
P.Sehigir Physiol Naviow B66, 054132 —D64132 8 (2902).

Slusky. RJ Ces, and

-Quantun-Clasiea Reentant Relation Crosenvorn DysTi-Os Spinto" J Seger, BG, Uoland, J,
Sturky. H. Karomadnsn RJ. Cava, An Mize, 1d P Sesilsr Phaical Review Letore 91, 10721-14200

“ag oS avd Se SH Tn = Ty, Hk, Ga sum pets: Fath alsin th epraietty
feasting te is T, Kerang Ufa BG Cela P. Setter, al 7. Cava, Hevoreugs of the
Nateuel Acalesny uf Sree £00, 3092-210 OC

“Low Fenperuure Soir Lrezarg ms lh Spun ke" J. Saycer. BG. Celine JS, Sky, I, Karuna,
RoI Cavs and P Soller. Physical Reve: 2 69, UOASLI-L-6 2008,

“Quincy and thera! ssn ection i uted ai ee: Dy MGTIO; {MT = La, YP" Sng Boland,
ASI Minsi,1'S. Stucky. H. Kersnadasa,R.7. Cave, ard P Sehr, Psi’ Review Tin poss. 2061),

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