B-T-P phase diagram of α-(BEDT-TTF)2KHg(SCN)4

被引：16
|
作者：
Kartsovnik, MV
Andres, D
Biberacher, W
Christ, P
Steep, E
Balthes, E
Weiss, H
Müller, H
Kushch, ND
机构：
[1] Bayer Akad Wissensch, Walther Meissner Inst, D-85748 Garching, Germany
[2] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Russia
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[4] Max Planck Inst Festkorperforsch, High Field Magnet Lab, F-38042 Grenoble, France
[5] CNRS, F-38042 Grenoble, France
[6] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
来源：
SYNTHETIC METALS | 2001年 / 120卷 / 1-3期
关键词：
organic conductors based on radical cation salts; phase transitions; magnetic measurements; transport measurements; magnetotransport;
D O I：
10.1016/S0379-6779(00)01118-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present detailed studies of the B-T-P phase diagram of alpha-(BEDT-TTF)(2)KHg(SCN)(4) by means of magnetic torque and magnetoresistance measurements. The phase diagram for magnetic field oriented almost perpendicular to the highly conducting layers closely resembles that expected for a charge-density-wave (CDW) system with an imperfectly nested Fermi surface. The influence of pressure can be readily understood as deteriorating the nesting conditions and thus enhancing the role of the orbital effect of magnetic field. At field strongly tilted from the normal to the layers, both the torque and magnetoresistance display a number of irreversible features that may be associated with a series of first-order phase transitions. This behaviour is not understood within the existing CDW theories.
引用
收藏
页码：687 / 690
页数：4
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